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REPORT NO. 3
AQUATIC HABITAT AND INSTREAt.A FLOW
INVESTIGATIONS (MAY-OCTOBER 1983)
Chapter 1: Stage and Discharge Investigations
ALASKA DEPARTMENT OF FISH AND GAME
SUSITNA HYDRO AQUATIC STUDIES REPORT SERIES
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ALASKA DEPARTMENT OF FISH AND GAME
SUSJTNA HYDRO AQUATIC STUDIES
REPORT NO. 3
AQUATIC HABITAT AND INSTREAt.A FLOW
INVESTIGATIONS (MAY-OCTOBER 1983)
Chapter 1: Stage and Discharge Investigations
Edl.ted by:
Christopher C. Estes
and
Douglas S. Vincent-Lang
Prepared for:
ALASKA POWER AUTHORITY
334 W. FIFTH AVE.
ANCHORAGE,ALASKA 99501
ARLIS
Alaska Resources
Library & Information Servtces
Anchorage, Alaska
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PREFACE
This report is one of a series of reports prepared for the Alaska Power
Authority (APA) by the Alaska Department of Fish and Game (ADF&G) to
provide information to be used in evaluating the feasibility of the
proposed Susitna Hydroelectric Project. The ADF&G Susitna Hydro Aquatic
Studies program was initiated in November 1980. The five year study
program was divided into three study sections: Adult Anadromous Fish
Studies (AA), Resident and Juvenile Anadromous Studies (RJ), and Aquatic
Habitat and Instream Flow Studies (AH). Reports prepared by the ADF&G
prior to 1983 on this subject are available from the APA.
The information in this report summarizes the findings of the 1983 open
water field season investigations. Beginning with the 1983 reports, all
reports were sequentially numbered as part of the Alaska Department of
Fish and Game Susitna Hydro Aquatic Studies Report Series.
Report
Number
1
2
3
4
TITLES IN THE 1983 SERIES
Title
Publication
Date
Adult Anadromous Fish Investigations: April 1984
May -October 1983
Resident and Juvenile Anadromous Fish July 1984
Investigations: May -October 1983
Aquatic Habitat and Instream Flow 1984
Investigations: May -October 1983
Access and Transmission Corridor Aquatic
Investigations: May -October 1983
1984
This report, 11 Aquatic Habitat and Instream Flow Investigations 11 is
divided into two parts. Part I, the 11 Hydrologic and Water Quality
Investigations 11
, is a compilation of the physical and chemical data
collected by th ADF&G Su Hydro Aquatic Studies team during 1983. These
data are arranged by individual variables and geographic location for
ease of access to user agencies. The combined data set represents the
available physical habitat of the study area within the Cook Inlet to
Oshetna River reach of the Susitna River. Part II, the 11 Adult Anadro-
mous Fish Habitat Investigations 11
, describes the subset of available
habitat compiled in Part 1 that is utilized by adult anadromous fish
studied in the middle and lower Susitna River (Cook Inlet to Devil
Canyon) study area. The studies primarily emphasize the utilization of
side slough and side channel habitats of the middle reach of the Susitna
River for spawning (Figures A). It represents the first stage of
development for an instream flow relationships analysis report which
will be prepared by E.W. Trihey and Associates •
MAP .AREA
MID OLE REACH
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J ADF 8G FIELD CAMPS
Figure A. Susitna River drainage basin.
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CONTENTS OF REPORT NO. 3
Part One
Chapter
1 Stage and Discharge Investigations.
2 Channel Geometry Investigations.
3 Continuous Water Temperature Investigations.
4 Water Quality Investigations.
Part Two
Chapter
5 Eulachon Spawning in the Lower Susitna River.
6 An Evaluation of Passage Conditions for Adult Salmon in
Sloughs and Side Channels of the Middle Susitna River.
7 An Evaluation of Chum and Sockeye Salmon Spawning Habitat in
Sloughs and Side Channels of the Middle Susitna River.
8 An Evaluation of Salmon Spawning Habitat in Selected Tributary
Mouth Habitats of the Middle Susitna River.
9 Habitat Suitability Criteria for Chinook, Coho, and Pink
Salmon Spawning.
10 The Effectiveness of Infrared Thermal Imagery Techniques for
Detecting Upwelling Groundwater.
Questions concerning this and prior reports should be directed to:
Alaska Power Authority
334 W. 5th Avenue
Anchorage, Alaska 99501
Telephone (907) 276-0001
ARLIS
Alaska Resources
Library & Information Servtc~s
)Ulchor~,~aaka
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ABSTRACT
STAGE AND DISCHARGE INVESTIGATIONS
1984 Report No. 3, Chapter 1
by Tim Quane, Pat Morrow, and Tommy Withrow
Alaska Department of Fish and Game
Susitna Hydro Aquatic Studies
2207 Spenard Road
Anchorage, Alaska 99503
Baseline hydrological data have been collected within the Susitna River
basin since 1981 in conjunction with the baseline fisheries studies
being conducted by the Alaska Department of Fish and Game Susitna
Hydroelectric Aquatic Studies Feasibility Team. The primary objective
of the data collection program has been to collect baseline hydrological
data {stage/water surface elevation, streamflow, and discharge) within
the variety of fish habitats that are present in the Susitna River basin
and to determine the influences of mainstem discharge conditions on the
hydrological characteristics of these habitats. Although these investi-
gations have been conducted throughout this 1 arge glacially-fed river
system, effort has been concentrated in the reach of river extending
from Talkeetna {RM 97) to Devil Canyon (RM 150) as impacts from the
construction and operation of the proposed hydroelectric development are
expected to be greatest in this river reach.
Six major fishery habitat types are located in the reach of river from
Talkeetna to Devil Canyon; mainstem, side channel, side slough, upland
slough, tributary mouth, and tributary. Sufficient data was collected
to describe the relationship of mainstem discharge on the water surface
elevation of the mainstem at 46 sites. Based on these data, this
relationship is fairly well defined for the range of discharges from
5,000 to 30,000 cfs {as referenced to the USGS Gold Creek mainstem
discharge gaging station). r~ainstem discharge was also found to in-
fluence, to varying degrees, the hydraulic characteristics of side
channels and side slough habitats by creating backwater areas and by
overtopping the heads of these habitats. Prior to overtopping events,
flow in these habitats was found to be generally clear and low,
originating from groundwater upwelling and surface water runoff.
Subsequent to overtopping, flow in these habitats was found to increase
dramatically and become directly governed by mainstem discharge. The
heads of upland slough habitats are never found to breach, with the only
influence of mainstem discharge on these habitats being backwater
effects. The streamflow regimes of the major clearwater tributaries in
this reach were also evaluated to determine the relative contribution of
the tributaries to the overall discharge of the Susitna River watershed.
Information from these studies will be used by other project biologists
and engineers to evaluate the impact of hydroelectric development on the
Susitna River.
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TABLE OF CONTENTS
ABSTRACT ...........................................................
TABLE OF CONTENTS ••••.•••••••.• . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i i
LIST OF FIGURES •••..••••••••••••.• ix
LIST OF TABLES ••••.••••.•••••••••..••••••.••••••••••.••.••••••••••.• xiv
LIST OF APPENDIX FIGURES •••.•.•••••••••.•.••••.•••••.•• xvii
LIST OF APPENDIX TABLES .••..••.••••••.•• ~ ••••••••• • • • • • XX iii
1.0
2.0
INTRODUCTION
1.1
1.2
Background •••••••••.•••.•••...••..••••••••••...•••.•..••.•
Objectives ••.•••••.••••.•••••••.•••••
1.2.1
1. 2.2
1.2. 3
Mainstem Habitats •...••.•..••.•••••••.•
Side Channel,
Upland Slough
Side Slough and
Habitats ............................ .
Tributary Habitats •••.
METHODS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••
2.1
2.2
2.3
Site Selection ••••..••..•••••••.• ~ •.•..••
2.1.1
2.1.2
2.1. 3
Mainstem Habitats •.•.••...••••••.
Side Channel,
Upland Slough
Side Slough and
Habitats ....................... .
Tributary Habitats •••.•••••••
Field Data Collection ••.
2.2.1 Stage ............................ .
2.2.2 Discharge Procedures •.•••••.••••• ..................
Analytical Approach .•.••.•.••.•.•
2.3.1
2.3.2
2.3.3
Mainstem Habitats ..•.•..•.•••..•.•
Side Channel,
Upland Slough
Side Slough and
Habitats •••••••.•.••..••.
Tributary Habitats ................................ .
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3
3
3
4
5
5
5
5
11
11
11
13
13
13
13
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TABLE OF CONTENTS (Cont.)
Page
3 • Q RESULTS • • • a-• • e e • • • e • e • • • • • e • • • e • • ""' a • • • 11 ~:~ • 111 ~ e • • • • • • • • • • e • • e • • • • • 14
3.1 Mainstem Habitatsoljo•••••••CI$•e•eee•••~~ee••a•••••e••e•••••o• 14
3.2 Side Channels•••••••••••••••••a••••••e••e••e•••"••••••e••c. 14
3.2.1 Mainstem 2 Sid~ Channel (RM 114.4) .•.••••.••.•••.•. 17
3.2.1.1 Site Description •..•..•.••.•••..••••.•.••• 17
3.2.1.3 Stage/Discharge Relationship •••..•.•.••••• 18
3.2.1.4 Mainstem Controlling and Breaching
Discharge ............................ ~~ .. ,.,. 18
3.2.2 Side Channel 10 (RM 133.8) ••••..••••••••.•••..•.••• 25
3.2~2.2 General Results.,.,e•e~···~~~~··,.,••••••••••e•• 25
3.2.2.3 Stage/Discharge Relationship .••...•.•.••.• 25
3.2.2.4 Mainstem Controlling and Breaching
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Discharges ........................ G .. ,.,.e,.,,.,. 25 ~
3.2.2.5 Backwater .. ~······~~······················· 30
3.2.3 Lower Side Channel 11 (RM 134.6) ••••.•••••.•.•....• 30
3.2.3.1 Site Description •••.•••••••••...•••.•••.•• 30
3.2.3.2 General Results ••.•.•••.••••..•.•.••••...• 30
3.2.3.3 Stage/Discharge Relationship •.••••.•...•.• 30 ~
3.2.3.4 Mainstem Contra 11 i ng and Breaching
Disch-arges ........... 18 •••••••••••••••••••• 34
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3.2.3.5 Backwater .••.••..•••••.••••.•.•..•.•.•.•.• 34
3.2.4 Upper Side Channel 11 (RM 136.2) •.••..•••••.••.•.•. 34
3.2.4.1 Site Description •••..•.•••••.••••.•.•.•••. 34
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TABLE OF CONTENTS (Cont.)
3.2.4.2 General Results ••.••••.•.•.•••.........•.. 34
3.2.4.3 Stage/Discharge Relationship .••••..••••.•• 34
3.2.4.4 Mainstem Controlling and Breaching
Discharges •••••••••••••.•••••••••••••••.•• 38
3.2.4.5 Backwater •.••.•••.•••.••.•••.•.•.•.•.•••.. 38
3.2.5 Side Channel 21 (RM 141.2) ••••••••••••••••••..••••• 38
3.2.5.1 Site Description •••••••••.••••.••••••..••• 38
3.2.5.2 General Results ...........•...•........... 38
3.2.5.3 Stage/Discharge Relationship ••.••••••••••• 43
3.2.5.4 Mainstem Controlling and Breaching
Discharges ••.••.....•.••...•••.•••.•.••.•• 43
3.2.5.5 Backwater •••••..•••••.•.••••.••••••...•..• 43
3.3 Side Sloughs •••••••••.•• ~································· 43
3.3.1 Whiskers Side Slough (RM 101.2) .•••••.•.••.•••.•••• 48
3.3.1.1 Site Description ..•.•••••.•••..••.••••••.• 48
3.3.1.2 General Results ....•.•.••..•.•.•.•••••••.. 48
3.3.1.3 Stage/Discharge Relationship .••.•.•••.•.•. 48
3.3.1.4 Mainstem Controlling and Breaching
Discharges.C1 •••••••••••••••••••••••••••••• 48
3.3.1.5 Backwater •••••.•..••.•••.•••.•••••••••..•• 52
3.3.2 Side Slough 8 (RM 133.6) .••.••.•••.•.••..•...•..... 52
3.3.2.1 Site Description .•••.•...••••.••........•. 52
3.3.2.2 General Results •••.••••..••••.•..••....••. 52
3.3.2.3 Stage/Discharge Relationship .••..••••...•• 52
3.3.2.4 Mainstem Controlling and Breaching
Discharges •..•....•.•..•.••..•.•.•....••.• 52
3.3.2.5 Backwater •...•....•.•.••••.••.•..••...••.• 57
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TABLE OF CONTENTS (Cont.)
Page
3.3.3 Side Slough 8A (RM 125.3) ••••.•••..•.•..•.•..•••... 57
3.3.3.1 Site Description ••••••..••.•.•••••••.••..• 57 -
3.3.3.3 Stage/Discharge Relationship •.••••••..•••. 57
3.3.3.4 Mainstem Controlling and Breaching
Discharges ................. G •••••• .,....... 63 ~
3.3.3.5 Backwater •.•.••.•.•••..••••.••••••.•.••..• 63
3.3.4 Side Slough 9 {RM 128.3) ...••••.••..•••..••..•.•... 63
3.3.4.1 Site Description .••••••••.••••••.••.•••.•• 63
3.3.4.2 General Results .• G •••••••••••••••••••••••• 63
3.3.4.3 Stage/Discharge Relationship •.••..••...••. 68
3.3.4.4 Mainstem Controlling and Breaching
Discharges ••••...••••••••••••..••.•.•••.•• 68
3.3.4.5 Backwater •.•••.••••.•.••.•.•....•••.•....• 68
3.3.5 Side Slough 11 (RM 135.7) ...•...•••..••.•.•.•..••.• 68
3.3.5.1 Site Description ..••.•.••••...•••....•.•.• 68
3.3.5.2 General Results •.•.•....•..•...•..•...••.. 72 -~
3.3.5.3 Stage/Discharge Relationship .•••..•..•.••. 72
3.3.5.4 Mainstem Controlling and Breaching
Discharges ...... -o•••••••e•···~~~············ 72
3.3.5e5 Backwater ..... e•••••••···················· 72 ~:
3.3.6 Side Slough 168 (RM 137.8) ••.•.•....•..•.•.•......• 72
3.3.6.1 Site Description •.•....•.••.•...••...••..• 72
3.3.6.2 General Results ....•••..••...•...•..•..... 75
3.3.6.3 Stage/Discharge Relationship ..•..•.....•.. 75
3.3.6.4 Mainstem Controlling and Breaching
Discharges................................ 75
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TABLE OF CONTENTS (Cont.)
3.4
3.3.6.5 Backwater................................. 75
3.3.7 Side Slough 20 (RM 140.2) ••••••••••••••..•.•.•••.•• 75
3.3.7.1 Site Description •••.•••.••..••••.•..•••••. 75
3.3.7.2 General Results ........................... 80
3.3.7.3 Stage/Discharge Relationship •.•.•.••••.•.. 80
3.3.7.4 Mainstem Controlling and Breaching
Discharges............................... 80
3.3.7.5 Backwater................................ 80
3.3.8 Side Slough 21 (RM 141.8) •.••••.•.••••.••••.•...•• ; 80
3.3.8.1 Site Description......................... 80
3.3.8.2 General Results.......................... 85
3.3.8.3 Stage/Discharge Relationship............. 85
3.3.8.4 Mainstem Controlling and Breaching
Discharges............................... 85
3.3.8.5 Backwater................................ 85
3.3.9 Side Slough 22 (RM 144.2)......................... 90
3.3.9.1 Site Description......................... 90
3.3.9.2 General Results.......................... 90
3.3.9.3 Stage/Discharge Relationship............. 90
3.3.9.4 Mainstem Controlling and Breaching
Discharges............................... 90
3.3.9.5 Backwater................................ 90
Upland Sloughs .......................••.......••..•......
3.4.1 Upland Slough 6A (RM 112.3) ...•••.•.••........•...
95
95
3.4.1.1 Site Description......................... 95
3.4.1.2 General Results.......................... 95
3.4.1.3 Stage/Discharge Relationship............. 95
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TABLE OF CONTENTS (Cont.)
Page
3. 4.1 e 4 Bac kwa te r .. ID • (t llll •• c •• c • ol1 e e " e • e • G 1!1 ill tl II ••• D • • 95
3.4.2 Upland Slough 19 (RM 140.0)....................... 98
3.4.2.1 Site Description......................... 98
3.4.2.2 General Results.......................... 98
3.4.2.3 Stage/Discharge Relationship............. 98
3 G 4. 2. 4 B a ckwa te r. ~ .. "' .... e • e •••• II •••••• 8 •• ID ol) • • .. • 98
3.5 Tributaries.............................................. 98
3.5.1 Whiskers Creek (RM 101.4) .••.••.•..•••••.••.•.•.•. 101
3.5.1.1 Site Description ••.•...••...••.•.••••.•.• 101
3.5.1.2 General Results •...•.•..••.•.••••.......• 101
3.5.1.3 Stage/Discharge Relationship •••.•.•••..•. 101
3.5.2 Lane Creek (RM 113.6) ..•••..••...••••.•••...••.••. 101
3.5.2.1 Site Description ••.••••••.••.•••...••.••• 101
3.5.2.2 General Results .•••••.•..•••.•....•••.•.• 101
3.5.2.3 Stage/Discharge Relationship •.•.•..•..•.• 105
3.5.3 Fourth of July Creek (RM 131.1) ........•.•....•... 105
3.5.3.1 Site Description •..•.•..•.•..•........... 105
3.5.3.2 General Results •••......•....•....•...•.. 105
3.5.3.3 Stage/Discharge Relationship ..•.•..•.•..• 105 ·
3.5.4 Waterfall Creek (RM 140.1) ...•....•..•••.•.•....•. 105
3.5.4.1 Site Description •...•.....•.•.•..•.....•. 105
3.5.4.2 General Results .....•••..•.•...•....•. ; •. 105
3.5.4.3 Stage/Discharge Relationship .........•..• 110
3.5.5 Unnamed Tributary at Side Slough 20 (RM 140.1) ..•. 110
3.5.5.1 Site Description ...•.........•........•.. 110
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-TABLE OF CONTENTS (Cont.)
3.5.6
Page
3.5.5.2 General Results ••...•....••.••.•.•..••..• 110
3.5.5.3 Stage/Discharge Relationship ..•..•.•••.•• 110
Gold Creek (RM 136.8) ••.•.•••.••..••••••...••••..• 110
3.5.6.1 Site Description •••••.•••.•••..•..•••.••• 110
3.5.6.2 General Results .•.•.••••.•••.•••.•.•.•.•• 110
3.5.6.3 Stage/Discharge Relationship ••..•.••••••• 114
3.5.7 Indian River (RM 138.6) ••••••.•.••.•••.•.••••••.•. 114
3.5.7 .1 Site Description......................... 114
3.5.7.2 General Results .••••••...•••.••..•..•••.. 114
3.5.7.3 Stage/Discharge Relationship •.••.•.•.•.•• 114
3.5.8 Portage Creek (RM 148.8) .......................... 120
3.5.8.1 Site Descr-iption......................... 120
3.5.8.2 General Results ••••.•.•.•••.•.•.•••.•.••. 120
-3.5.8.3 Stage/Discharge Relationship ..•..•.•.•.•. 120
4. 0 DISCUSSION.................................................... 124
5.0 CONTRIBUTORS.................................................. 129
6. 0 ACKNOWLEDGEMENTS. • • . • • • • • • . • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 130
7.0 LITERATURE CITED .•..•••.•••••.....••••.••••.•••.•••.•..••••..• 131
-8.0 GLOSSARY •••••••••••••••••••••••••.•••••••••••••••••••••••••••• 132
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LIST OF FIGURES
1-1 Comparison of the 25 year record for mean monthly
Mainstem discharge to the mean monthly mainstem
discharge occurring at Gold Creek for years 1981
and 1982................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Mainstem staff gage locations in the Talkeetna to
Devil Canyon reach of the Susitna River for the
open water season of 1983............................... 8
1-3 Side channel, slough and tributary sites selected
for the stage/discharge studies for the 1983 open
water field season...................................... 10
1-4 Comparison of the mean daily Susitna River discharge
for the USGS gaging stations located at Susitna
Station, Sunshine Station, Gold Creek Station and
Cantwell Station with the USGS gaging station on
the Yentna River (near Susitna Station) for 1983........ 15
1-5 Comparison of the 25 year record for mean monthly
mai nstem discharge for Gal d Creek (USGS 15292000)
to the mean monthly mainstem discharge occurring
at Gold Creek for years 1981, 1982, and 1983....... ••• .• 16
1-6 Site map of Mainstem 2 Side Channel which is
located on the east bank of the Susitna River at
river mile 114.4. .. . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . 19
1-7 Stage versus flow rating curve for Mainstem 2 Side
Channel (NW Channel), staff gage 114.4S5................ 21
1-8 Stage versus flow rating curve for Mainstem 2 Side
Channel (NE Channel), staff gage 114.4S8................ 22
1-9 Side Channel flow versus mainstem discharge rating
curve for Mainstem 2 (NW Channel), staff gage
114.55 ...... -............................................. 23
1-10 Side Channel flow versus mainstem discharge rating
curve for Mainstem 2 (NE Channel), staff gage
114.458.................................................. 24
1-11 Site map of Side Channel 10, which is located on
the west bank of the Sus itna River at river mi 1 e
133.8........... .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 26
1-12 Stage versus flow rating curve for Side Channel 10,
staff gage 133.8S3...................................... 28
1-13 Side Channel flow versus mainstem discharge rating
curve for Side Channel 10, staff gage 133.8S3........... 29
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LIST OF FIGURES (Cont.)
1-14 Site map of Lower Side Channel 11, which is located
on the east bank of the Susitna River at river mile
134.6••••e•o••••••••e•••••••oCJoeeee~>••eoll•a•o••••••e••~~~ 31
1-15 Stage versus flow rating curve for Lower Side
Channel 11, staff gage 134.6S2.......................... 33
1-16 Side Channel flow versus mainstem discharge rating
curve for Lower Side Channel 11, staff gage
134.6S2eeece•e•e•••••o••••••••••••••••••••e•••elloeeeo••• 35
1-17 Site map of Upper Side Channel 11, which is located
on the east bank of the Susitna River at river mile
136 a 2 e e a a e 0 Cl a e e a a e e a 0 a a C1 e • e a a e e • a a e • a a II e e e e e • 101 e e a a 1D a e a e e 3 6
1-18 Stage versus flow rating curve for Upper Side
Channel 11, staff gage 136.2Sl.......................... 39
1-19 Side Channel flow versus mainstem discharge rating
curve for Upper Side Channel 11, staff gage
136.2Sl••••••••••••••••••••••••••••••o••••••a••••••••••o 4Q
1-20 Site map of Side Channel 21, which is located on
the east bank of the Susitna River at river mile
141. 2. a 0 II e e 1D 0 G e a a II 0 0 0 101 Co e a e a e e a Co e e e a e e a a 1111 0 e II e G e e e e a e e a e 0 a
1-21 Stage versus flow rating curve for Side Channel 21,
41
staff gage 140.6S4...................................... 44
1-22 Stage versus flow rating curve for Side Channel 21,
staff gage 140.6S7...................................... 45
1-23 Side Channel flow versus mainstem discharge rating
curve for Side Channel 21, staff gage
140 . 6 S4 . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
1-24 Side Channel flow versus mainstem discharge rating
curve for Side Channel 21, staff gage
140.657 ................................................ .
1-25 Site map of Whiskers Side Slough, which is located
on the west bank of the Susitna River at river mile
101.2 ................................................... .
1-26 Stage versus flow rating curve for Whiskers Side
47
49
Slough, staff gage 101.2S3... •• . . . • • . . . . • . . . • . . . . • . . • . . . 51
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-
~'
~-
1-27 Site map of Side Slough 8, which is located on the ~
east bank of the Susitna River at river mile
113.6 .................................................... 53
X
.~
I~
-
LIST OF FIGURES (Cont.)
1-28 Stage versus flow rating curve for Side Slough 8,
staff gage 113.6S2...................................... 55
1-29 Slough flow versus mainstem discharge rating curve
for Side Slough 8, staff gage 113.6S2................... 56
1-30 Site map of Side Slough 8A, which is located on the
east bank of the Susitna River at river mile
125.3 ................................................... 58
1-31 Stage versus flow rating curve for Side Slough 8A,
staff gage 125.3S4...................................... 60
1-32 Stage versus flow rating curve for Side
Slough 8A, staff gage 125.3S3........................... 61
1-33 Stage versus flow rating curve for Side
Slough 8A, staff gage at R&M recorder................... 62
1-34 Slough flow versus mainstem discharge rating curve
for Side Slough 8A, staff gage 125.3S4.................. 64
1-35 Slough flow versus mainstem discharge rating curve
for Side Slough 8A, staff gage 125.3S3.................. 65
1-36 Site map of Side Slough 9, which is located on the
east bank of the Susitna River at river mile
128.3 ......... .-... •.•.................................... 66
1-37 Stage versus flow rating curve for Side Slough 9,
staff gage 128.3S1...................................... 69
1-38 Slough flow versus mainstem discharge rating curve
for Side Slough 9, staff gage 128.3S1.................. 70
1-39 Site map of Side Slough 11, which is located on the
east bank of the Susitna River at river mile 135.3...... 71
1-40 Stage versus flow rating curve for Side Slough 11,
staff gage 135.3S6...................................... 74
1-41 Site map of Side Slough 168, .which is located on
the west bank of the Susitna River at river mile
137 .8................................................... 76
1-42 Stage versus flow rating curve for Side Slough 168,
staff gage 138.0S5...................................... 78
1-43 Slough flow versus mainstem discharge rating curve
for Side Slough 168, staff gage 138.0S5................. 79
xi
LIST OF FIGURES (Cont.)
1-44 Site map for Side Slough 20, which is located on
the east bank of the Susitna River at river mile
140 eo 2 e • e~ • • e • Cl • Cl • o • o • • • e • • • o e • a • e • • • a • o • • e 111 eo o • • • • • • • • • • • • 81
1-45 Stage versus flow rating curve for Side Slough 20,
staff gage 140.1S5...................................... 83
1-46 Slough flow versus mainstem discharge rating curve
for Side Slough 20, staff gage 140.1S5.................. 84
1-47 Site map for Side Slough 21, which is located on
the east bank of the Susitna River at river mile
141 • 8 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • " • ., • • • • • • • • e 86
1-48 Stage versus flow rating curve for Side Slough 21,
staff gage 142.0S6...................................... 88
1-49 Slough flow versus mainstem discharge rating curve
for Side Slough 21, staff gage 142.0S6.................. 89
1..;50 Site map for Side Slough 22, which is located on
the north bank of the Susitna River at river mile
144 • 2 Ill e • • • • • ., • e e • • o • • • • • e • • • • • • • • • • e • c o • • • c e · Q • • 11 a • • • e " • • 91
1-51 Stage versus flow rating curve for Side Slough 22,
staff gage 144.3S6...................................... 93
1-52 Slough flow versus mainstem discharge rating curve
for Side Slough 22, staff gage 144.3S6.................. 94
1-53 Site map for Upland Slough 6A, which is located on
the west bank of the Susitna River at river mile
112.3eee•••••••eo•••"•••••••osee•••••••••••••••••••••••• 96
1-54 Site map of Upland Slough 19, which is located on
the east bank of the Susitna River at river mile
140 G 0 G e G G G G 1J1 G G e e e G ill e e II C1 G G e G G G G 0 G G G G e G G G G 0 e II G G e G G G G C1 G G G G G 99
1-55 Site map of Whiskers Creek, which is located on the
west bank of the Susitna River at river mile 101.4 ...... 102
1-56 Stage versus flow rating curve for Whiskers Creek,
Staff gage 101.2T2 •..•.•...•••...••.....•.•....•.......• 103
1-57 Site map of Lane Creek, which is located on the
east bank of the Susitna River at river mile
113.6. • • e • • • • e • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 104
1-58 Stage versus flow rating curve for Lane Creek,
staff gage 113.6T7 ................•...•................• 106
xii
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~\
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I~
LIST OF FIGURES (Cont.)
1-59 Site map of Fourth of July Creek, which is located
on the west bank of the Susitna River at river mile
131.1 ................................................... 107
1-60 Stage versus flow rating curve for Fourth of July
Creek, staff gage 131.1T1 ..••••••...•.••••.•...•...••.. 108
1-61 Site map of Waterfall Creek, which is located on
the east bank of the Susitna River at river mile
140 • 1. • • • • " • o c e c • o • ~&~ • e • • • • • • o c • • • c • • • • • • • • • • • e • • • • • • • • o • 1 Q 9
1-62 Site map of Slough 20 unnamed tributary, which is
1 ocated on the east bank of the Susitna River at
River IV1ile 140.1 .......•................................ 111
1-63 Stage versus flow rating curve for tributary in
Upper Slough 20, staff gage 140.1T3 .•...••.•..•..•...... 112
1-64 Site map of Gold Creek, which is located on the
east bank of the Susitna River at river mile
136.7 ........... .: ....................................... 113
1-65 Depth of water (feet) versus tributary flow rating
curve for Gold Creek, continuous stage recorder ..•...••• 116
1-66 Site map of Indian River, which is located on the
west bank of the Susitna River at river mile 138.6 ...... 117
1-67 Depth of water (feet) versus tributary flow rating
curve for Indian, continuous stage recorder ...•...•...•. 119
1-68 Site map of Portage Creek which is located on the
west bank of the Susitna River at river mile 148.8 ..•... 121
1-69 Depth of ~ater (feet) versus tributary flow for
Portage Creek, continuous stage recorder ...•...•..•....• 123
xiii
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LIST OF TABLES
1-1 Locations of 1983 open water field season mainstem
stage monitoring stations in the Talkeetna to Devil
Canyon reach of the Susitna River....................... 6
1-2 Side channel, side slough and upland slough sites
in the Talkeetna to Devil Canyon reach selected for
stage/discharge studies during the 1983 open water
field season............................................ 9
1-3 Tributary study sites ·in the Talkeetna to Devil
Canyon reach selected for stage/discharge studies
during 1983 open water field season..................... 12
1-4 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek {USGS 15292000) for
each stage monitoring station within Mainstem 2
Side Channel at RM 114.4................................ 20
1-5 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Channel
10 at .RM 133.8........................................... 27
1-6 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek {USGS 15292000) for
each stage monitoring station within Lower Side
Channel 11 at RM 134.6.................................. 32
1-7 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Upper Side
Channel 11 at RM 136.2.................................. 37
1-8 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Channel
21 at RM 141.2........................... .. . . . . . . . . . . . . . 42
1-9 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Whiskers Side
Slo1J·gh Rl~ 101.2......................................... 50
1-10 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough 8
{Lane Creek Slough) at RM 133.6......................... 54
xiv
LIST OF TABLES (Cont.)
1-11 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough
8 A at RM 12 5 • 3 ••••••••••••• e •••••••••••••••• o •••••••• ., • • • 59
1-12 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough 9
at RM 128.3.............................................. 67
1-13 Range of water surface elevations and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough 11
at RM 135~~~7 •••...•••...••.••.•••••.•••••••.•.••..••••..•• 73
1-14 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough
16B at RM 137.8.......................................... 77
1-15 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough
20atRM140.2 ............................................. 82
1-16 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Side Slough
21 at RM 14i..8 .................. -o ••••• ~~~······"'··~~~········ 87
1-17 Range of water surface elevation and corresponding
mainstem discharge at the t·ime of measurement for
each stage monitoring location within Side Slough
2 2 at RM 144 • 2 •••• ., •••••••••••••••••••••••••••• e ••••• "' • • • 9 2
1-18 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Upland Slough
6A at RM 112.3............. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
1-19 Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for
each stage monitoring station within Upland Slough
19 at RM 140 . 0 ••.....••..•.•....••....•....••....•... Cl • • • 1 00
1-20 Streamflow (cfs) and water depth measurements
obtained at the Gold Creek tributary continuous
stage recorder for 1983 .•...••.....•.•..•.....•....•..•.• 115
XV
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I v
LIST OF TABLES (Cont.)
1-21 Streamflow (cfs) and water depth measurements
obtained at the Indian River tributary continuous
stage recorder for 1983 ••••••••••••••••••••••••••••••••• 118
1-22 Streamflow (cfs) and water depth measurements
obtained at the Portage Creek tributary continuous
stage recorder for 1983 .................••.............. 122
1-23 Initial breaching and controlling mainstem discharge
for selected side channels and side sloughs in the
Talkeetna to Devil Canyon reach of the Susitna River,
1983 • " • e • • • • c e • • c • e • e • • • • • " • • Iii • e • • c • o o Cl e Cl • • c c oZI o~~o e • o c c. Ill • o • 126
xvi
-
LIST OF APPENDIX FIGURES
1-A-1 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Whiskers Slough head and mouth....................... 1-A-161
1-A-2 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Talkeetna Fishwheel Station and left bank at
LRX9................................................. 1-A-162
1-A-3
1-A-4
1-A-5
1-A-6
1-A-7
1-A-8
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
right bank at LRX lOB and right bank at LRX lOC.................................................. 1-A-163
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
right bank at LRX 11 and left bank at LRX 12........ 1-A-164
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Upland Slough 6A mouth and 1 eft bank at LRX
16................................................... 1-A-165
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
right bank at LRX 18 and mainstem below Lane
Creek mouth •....•.........••..•....•.•.••••.•••......
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Lane Creek mouth and above Lane Creek mouth .••••••
Mainstem discharge (Provisiona1 USGS 1983)
versus mainstem water surface elevation at
above Mainstem 2 Side Channe1 mouth and above
Mainstem 2 Side Channel NW head •••••.•••••••.••••••.•
1-A-166
1-A-167
1-A-168
1-A-9 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation
above Mainstem 2 Side Channel NE head and the
right bank at LRX 24................................. 1-A-169
1-A-10 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 28 and at Side Slough
8A mouth ••••..•••••••••.••.••••••••••..•••••••...•.••.
xvii
1-A-170
LIST OF APPENDIX FIGURES (Cont.)
1-A-11 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 24 and above Slough SA
NE head ............... "'••••••••o•••$•e•ooe•e•••• .. ••••••
1-A-12 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 31 and at the right bank
at LRX 32 ............................................ .
1-A-13 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 33 and at the right bank at
1-A-171
1-A-172
LRX 34............................................... 1-A-173
1-A-14 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 35 and below the mouth of
Fourth of July Creek................................. 1-A-174
1-A-15 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
left bank at LRX 37 and at Side Channel 10 mouth ••••.
1-A-16 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
left bank at LRX 40 and at Side Slough 168 mouth •••••
1-A-17 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
mainstem at the head of Side Slough 168 and the
right bank at LRX 49 •••••••••••••••••••••••••••••••••
1-A-18 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
1-A-175
1-A-176
1-A-177
left bank at LRX 50 and the left bank at LRX 51...... 1-A-178
1-A-19 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
Upland Slough 19 mouth and the right bank at
LRX 53............................................... 1-A-179
1-A-20 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at Side
Channel 21 mouth and the right bank at LRX 58 ••••••••
xviii
1-A-180
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LIST OF APPENDIX FIGURES (Cont.)
1-A-21 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 55 and the right bank at
L RX 56 •••••••••••••••••••••••••••••••••••••••••••••••
1-A-22 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 57 and at the mainstem at
1-A-181
Side Slough NW head.................................. 1-A-182
1-A-23 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the left bank at LRX 61 and at the left bank at
LRX 62............................................... 1-A-183
1-A-24 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Whiskers
Slough mouth and discharge site ...•....•.•.....•.....
1-A-25 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Whiskers
Slough head ................••.•............•..•..•...
1-A-26 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 6A
1-A-184
1-A-185
mouth and backwater.................................. 1-A-186
1-A-27 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8
mouth and discharge site............................. 1-A-187
1-A-28 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8
head and Mainstem 2 mouth............................ 1-A-188
1-A-29 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
lower backwater and upper backwater.................. 1-A-189
1-A-30 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
NW channel discharge site and head ..•.•..............
1-A-31 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
NE channel discharge site and head ........•...•......
xix
1-A-190
1-A-191
LIST OF APPENDIX FIGURES (Cont.)
1-A-32 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8A
mouth and upper backwater............................ 1-A-192
1-A-33 Non-rna i nstem discharge ( Prov is i ana 1 USGS 1983)
versus the water surface elevation at Slough SA
NW channel discharge site and lower discharge
site west channel.................................... 1-A-193
1-A-34 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8A
lower discharge site east channel and NW channel
head .................. ···o••····· ............ l&lO •• fl •• " 1-A-194
1-A-35 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 9
mouth and discharge site............................. 1-A-195
1-A-36 Non-rna in stem discharge ( Provisiona 1 USGS 1983)
versus the water surface elevation at Slough 9
head and Side Channel 10 mouth....................... 1-A-196
1-A-37 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 at staff gage 133.8S7 and physical
habitat modeling cross section 1..................... 1-A-197
1-A-38 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 physical habitat modeling cross
section 2 and 4 (discharge site)..................... 1-A-198
1-A-39 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 head and Lower Side Channel 11
physical habitat modeling cross section 1............ 1-A-199
1-A-40 Non-mains tern discharge (Provi s i anal USGS 1983)
versus the water surface elevation at Lower Side
Channel 11 physical habitat modeling cross
section 3 and Side Channel below Slough 11
mouth................................................ 1-A-200
1-A-41 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel above Slough 11 mouth and Slough 11
rna u t h .. co .... ill' • • • • • • • • • • • • • • • • " ••••••••• " • • • • • • • • • • • • • .. • 1-A-2 0 1
1-A-42 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 11
discharge site and Upper Side Channel 11 mouth....... 1-A-202
XX
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LIST OF APPENDIX FIGURES (Cont.)
1-A-43 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Upper Side
Channel 11 phys i ca 1 habitat mode 1 i ng_ cross
section 2 and 3...................................... 1-A-203
1-A-44 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Upper Side
Channel 11 discharge site and head .•.•••••......••.•.
1-A-45 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 168
1-A-204
mouth and discharge site............................. 1-A-205
1-A-46 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 16B
head and Slough 19 access •..••.•..•••...••.•••.•.•..•
1-A-47 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 19
below mouth and discharge site .•.•...•••.••.••••....•
1-A-48 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 20
1-JI-206
1-A-207
mouth and discharge site............................. 1-A-208
1-A-49 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 20
head and Side Channel 21 mouth....................... 1-A-209
1-A-50 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 21 Upper and Lower discharge sites........... 1-A-210
1-A-51 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 21 mid channel and Side Channel AS........... 1-A-211
1-A-52 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel A6 Upper and Slough 21 mouth................. 1-A-212
1-A-53 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 21
discharge site and NW head. . . . . . . • . . . • • . • . • . . . . . . . . . . 1-A-213
1-A-54 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 21
NE head and Slough 22 mouth ...•....••........•....... 1-A-214
xxi
LIST OF APPENDIX FIGURES (Cont.)
1-A-55 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 22
mid slough and-discharge site •.••.••....•..••••...•..
1-A-56 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 22
1-A-215
head................................................. 1-A-216
xxi i
~I
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LIST OF APPENDIX TABLES
1-A-1 Mainstem Susitna River mean daily discharge at
Cantwell Station..................................... 1-A-1
1-A-2 Mainstem Susitna River mean daily discharge at
1-A-3
1-A-4
1-A-5
1-A-6
Gold Creek Station •..•••...••••••••..•..•••.•...•...•
Mainstem Susitna River mean daily discharge at
Sunshine Station •..••..•••••••••..••••.••......•.•.•.
Mainstem Yentna River mean daily discharge near
SUSitna StatiOne••uceec~o~e•e~e•G•••e•••~••oooe•e•o•~
Mainstem Susitna River mean daily discharge at
Susitna Station ..................................... .
Comparison of mainstem water surface elevations
to mean daily mainstem discharge (cfs) obtained
at the USGS gaging station at Gold Creek
(15292000) ...•.................•..•...••..•...•...••.
1-A-7 Comparison of non-mainstem water surface
elevation to mean daily mainstem discharge (cfs)
obtained at the USGS gaging station at Gold
Creek (15292000) ..•.••.•.•.••••••.•.••.•..••...•..••.
1-A-8 Comparison of water surface elevation (WSEL) and
flow measurements at selected side channel,
slough and tributary study sites in the
Talkeetna to Devil Canyon reach to the mean
daily Susitna River discharge recorded at Gold
Creek (15292000) .........•.....................•.....
1-A-9 Comparison of tributary water surface elevations
to mean daily mainstem discharge (cfs) obtained
at the USGS gaging station at Gold Creek
(15292000) .....•••..•••.••.•.•.••••••••.•••••.•.•....
1-A-10 Daily mean streamflow record for Gold Creek,
1-A-2
1-A-3
1-A-4
1-A-5
1-A-6
1-A-55
1-A-129
1-A-137
Alaska 1983............. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-A-143
1-A-11 Daily mean streamflow record for Indian River,
Alaska 1983.......................................... 1-A-149
1-A-12 Daily mean streamflow record for Portage Creek,
Alaska 1983.......................................... 1-A-155
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1.0 INTRODUCTION AND OBJECTIVES
1.1 Background
The Alaska Department of Fish and Game (ADF&G) Su Hydro Aquatic Fea-
sibility Study Team has collected stage and discharge data throughout
much of the Susitna River basin since 1981. The primary emphasis on the
stage and discharge data collection program has been to define the
relationship that mainstem discharge has on stage (water surface ele-
vation) in the mainstem portion of the Susitna River and stage and
streamflow within peripheral side channel, side slough, upland slough,
and tributary habitats. Although measurements of stage and streamflow
have been obtained in the lower river (Cook Inlet to Talkeetna reach),
the emphasis of this data collection program has been largely oriented
to the reach of the Susitna River from Talkeetna upstream to the Devil
Canyon as project related impacts are expected to be most severe in this
reach.
Results of these investigations (ADF&G 1982, 1983) have found that the
range of mainstem discharges occurring at Gold Creek (USGS 15292000)
during 1981 and 1982 were relatively higher for 1981 and similar for
1982 when compared to the historical 25 year mainstem discharge con-
ditions (Figure 1-1) (USGS 1978). It was found that for the range of
mainstem discharges from 8,000 to 30,000 cfs, the relationship between
water surface elevation in the mainstem and mainstem discharge is
relatively well defined at several mainstem locations between Talkeetna
and Devil Canyon.
An understanding of the relationship between mainstem discharge and the
hydraulic characteristics of side sloughs was obtained for the range of
mainstem discharges from 8,000 to 30,000 cfs. Flows in side slough
habit.ats during low to moderate mainstem discharges (when the head
portions were not breached) was observed to consist primarily of ground
water and surface water runoff. During these nonbreached conditions,
side slough flow showed only an indirect relationship to mainstem
discharge. With the occurrence of moderately high and high mainstem
discharges, breaching (overtopping) of side slough habitats was observed
to occur. With sufficient breaching by the mainstem, the flow con-
ditions within these habitats was observed to become directly related to
mainstem discharge. Generally, it was found that side sloughs in the
Talkeetna to Devil Canyon reach breached in the range of mainstem
discharges from 22,000 to 28,000 cfs. In addition, backwater areas were
observed to occur to varying degrees at the mouths of many of the side
slough habitats during moderate to high mainstem discharges. Results of
stage and discharge investigations in side channel habitats show that
hydraulic responses to mainstem discharges are very similar to those
occurring in side slough habitats. lower mainstem discharges initiate
these responses in side channel habitats than are necessary for side
slough habitats.
Investigations in upland slough habitats have shown that the hydraulic
characteristics in these habitats are less directly related to mainstem
discharges than side slough or side channel habitats. Upland slough
habitats were found to join the mainstem river only at the mouth of the
1
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·-·-1982
25 YEAR
40 RECORD
30
20
10
0
OCT NOV. DEC JAN FEB MAR APR MAY JUNE JULY AUG SEPT
DATE
Figure 1-1. Comparison of the 25 year record for mean monthly mainstem discharge for Gold
Creek (USGS 15292000) to the mean monthly mainstem discharge occurring at Gold
Creek for years 1981 and 1982.
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slough, with the head portions of these habitats isolated from the
mainstem river. Upland sloughs are never breached by mainstem dis-
charge. Extensive backwater areas were, however, observed to occur at
the mouths of many of the upland slough habitats during moderate to high
mainstem discharges.
Stage and discharge data were also obtained in seven tributaries in the
Talkeetna to Devil Canyon reach. From these data, preliminary rating
curves were developed for six of these tributaries (Whiskers Creek, Gash
Creek, Lane Creek, Gold Creek, Waterfall Creek, Indian River, and
Portage Creek).
1.2 Objectives
The FY84 open water field season (May-October, 1983) stage and discharge
data collection program was specifically designed to expand the eval-
uation of the stage and discharge relationships occurring in mainstem
and peripheral habitats in the Talkeetna to Devil Canyon reach of the
Susitna River. Specific objectives for each habitat type are presented
below.
1.2.1 Mainstem Habitats
The objectives of the 1983 open water season stage data collection
program conducted in the rna in stem Susitna River between Talkeetna and
Devil Canyon were to:
1) Collect sufficient water surface elevation data at selected
rna in stem locations to define the relationship of rna i nstem water
surface elevation to mainstem discharge for the full range of
rna ins tern discharges occurring during the 1983 open water season.
This information will be used by project engineers to further
evaluate the predictive accuracy of various hydraulic simulation
models;
2) Collect water surface elevation data at mainstem locations adjacent
to the selected side channel, side and upland slough, and tributary
mouth study locations to evaluate if and how mainstem discharge
influences the hydrological characteristics of these peripheral
habitats.
1.2.2 Side Channel, Side Slough, and Upland Slough Habitats
The objectives of the FY84 open water season stage and discharge data
co 11 ecti on program conducted at side channe 1 and s 1 ough (up 1 and and
side) habitats between Talkeetna and Devil Canyon were to:
1) Collect sufficient stage and streamflow measurements within
selected side chp.nnel and slough (upland and side) habitats to
develop stage/discharge rating curves covering the full range of
mainstem discharges experienced during the 1983 open water field
season;
2) Collect measurements of water surface elevations within selected
side channel and slough (upland and side) habitats to further
3
evaluate if and how the water surface elevation in these peripheral
habitats are influenced by mainstem discharge;
3) Collect measurements of stage and streamflow within selected side
channel and slough (upland and side) habitats to support analysis
of the effects of local (i.e., site) flow conditions on the
availability and utilization of these habitats for fish passage,
spawning and rearing (refer to Fish Habitat Study) and to determine
if and how mainstem discharges influence these local flow
conditions.
1.2.3 Tributary Habitats
The objectives of the 1983 stage/discharge monitoring program conducted
at tributary habitats located between Talkeetna and Devil Canyon were
to:
1) Collect sufficient stage and streamflow measurements within
selected tributaries in the Talkeetna to Devil Canyon reach to
develop stage/discharge rating curves covering the full range of
conditions experienced during the 1983 open water field season;
2) Collect measurements of stage and streamflow within selected tribu-
tary and tributary mouth habitats to support analyses of fish
habitats in these habitat zones.
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2.0 METHODS
2.1 Site Selection
2.1.1 Mainstem Habitats
Locations at which stage monitoring stations were placed in the mainstem
Susitna River between Talkeetna and Devil Canyon are presented in Table
1-1. ~1ainstem stage monitoring stations were chosen based on consul ta-
tion with the project engineer and included selected R&M Consultants•
lower river cross sections (LRX) and mainstem sites adjacent to periph-
eral habitats selected for study.
Stage monitoring stations were installed at several LRX sites appearing
to be of uniform channe 1 geometry and considered to represent the
general morphological characteristics of the mainstem Susitna River in
the Talkeetna to Devil Canyon reach. Mainstem stage monitoring stations
were also installed adjacent to side channel, slough (upland and side),
and tributary habitats to determine the effect of mainstem discharge on
the stage and streamflow characteristics within these peripheral
habitats. These mainstem staff gage sites were located near the head
and mouth portion of the study site.
A 11 stage data collected in the rna in stem for the Talkeetna to Devi 1
Canyon reach of the Susitna River (Figure 1-2) is referenced to mainstem
discharge obtained at the U.S.G.S. Gold Creek gaging station (15292000).
The Gold Creek discharge gaging station was selected as the index
station because of its relative close proximity to stage monitoring
stations in this reach and its extensive period of record.
2.1.2 Side Channel, Side Slough, and Upland Slough Habitats
Stage and streamflow were monitored at five side channel and 11 slough
(9 side and 2 upland) study sites located between Ta"lkeetna and Devil
Canyon (Table 1-2, Figure 1-3}. Sites were selected for study, based on
consultations with the project engineers and biologists, to:
1) Provide baseline water surface elevation and discharge data to
assist in determining the influence that mainstem discharge has on
several key hydraulic characteristics of side channel and slough
habitats (i.e., breaching, backwater and flow regime conditions);
and,
2) ~rovide water surface elevation data to support evaluations of fish
habitats by project biologists in side channel and slough habitats.
Stage was monitored within the mouth portion, free-flowing portion, and
head portion of each study site. In addition, streamflow was monitored
within the free-flowing portion of each study site. The stage data
collected within the mouth portion of each study site was obtained to
evaluate the presence and extent of backwater as a function of mainstem
discharge. The stage and streamflow data measured within the
free-flowing portion of each study site were obtained to formulate the
site flow rating curve and evaluate the effect that mainstem discharge
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Tab 1 e 1-1. Locations of 1983 open water field season mainstem stage
monitoring stations in the Talkeetna to Devil Canyon reach
of the Susitna River.
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Sampling Site River Mile Gage No.
-~
Mainstem at Whiskers Slough Mouth 101.2 101.2M4
Mainstem at Whiskers Slough Head 101.5 101.5M6
Talkeetna Fishwheel Station 103.0 103. OFl -Right Bank at LRX 9 103.2 103.2Ml
Left Bank at LRX 9 103.2 103.2Ml
Right Bank at LRX lOB 105.9 105.9Ml
Right Bank at LRX lOC 106.4 106.4Ml
Right Bank at LRX 11 106.7 106.7Ml
Left Bank at LRX 12 108.4 108.4Ml
Mainstem at Slough 6A Mouth 112.3 112.3Ml -Left Bank at LRX 16 112.4 112. 4M2
Right Bank at LRX 18 113.0 113.mn
t•1ainstem Below Lane Creek Mouth 113.4 113. 4M6
Mainstem at Lane Creek Mouth 113.6 113. 6M9 ~
Mainstem Above Lane Creek Mouth 113.7 113. 7M5
Mainstem Above Mainstem 2 Mouth 114.4 114.4Ml
Mainstem Above Mainstem 2 NW Head 115.5 115. 5M4 ~
Mainstem Above Mainstem 2 NE Head 115.9 115. 9M2
Curry Fishwheel Station 120.6 120.0Fl
Right Bank at LRX 24 120.7 120.7Ml
Right Bank at LRX 28 124.4 124.4Ml ~
Side Channel at Slough 8A Mouth 125.3 125.3M4
Right Bank at LRX 29 126.1 125.3M3
Mainstem Above Slough 8A NE Head 127.1 125.3M6 -Right Bank at LRX 31 128.7 128.7Ml
Right Bank at LRX 32 129.7 129.7Ml
Right Bank at LRX 33 130.1 130.1Ml ~ Right Bank at LRX 34 130.5 130.5Ml
Right Bank at LRX 35 130.8 130.9Ml
Mainstem B/L Fourth of July Creek 131.1 131.1M3
Left Bank at LRX 37 131.8 131.8Ml ......,
Mainstem at Side Channel 10 Mouth 133.8 133.8M6
Left Bank at LRX 40 134.3 134.3Ml
Side Channel 8/L Slough 11 Mouth 135.3 135.3M4
Side Channel A/B Slough 11 Mouth 135.3 135.3M2
Mainstem at Slough 16B Mouth 138.0 138.0M2
Mainstem at Head of Slough 16B 138.3 138. 0~14
Right Bank at LRX 49 138.3 138.3Ml ~
Left Bank at LRX 50 138.5 138.5Ml
Left Bank at LRX 51 138.9 138.9Ml
Mainstem at Slough 19 Mouth 139.8 140.0M2 ,...,,
Right Bank at LRX 53 140.1 140.1Ml
Mainstem at Side Channel 21 Mouth 140.6 140.6Ml
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Table 1-1 (Continued).
Sampling Site
Right Bank at LRX 54
Right Bank at LRX 55
Right Bank at LRX 56
Right Bank at LRX 57
Mainstem at Slough 22
Left Bank at LRX 61
Left Bank at LRX 62
River Mi 1 e Gage No.
140.8 140.8M1
141.6 141.6M1
142.1 142.1Ml
142.3 142.0M2
Head 144.7 144. 3t41
148.7 148.7M1
148.9 148.9Ml
. 7
MS abew• lllllaluto"" 2
NW Hoed~---.;..._
IIIIlS ot Slde c llaRae6 Zt .aoun•
Rl at LJIX 5"!
IllS o~ Sla~~tttl 1'1 Mo•fl:t
Ll at LRK 51
6 Sid• Ctlann•' tlool.ow Sl.ouatli U Wa~~tth
C. Lll at LRX: "!7'
C> RB ol LRX 35
6 Rll a?--LRX "!4
A A& at LAX 32
6 MS abowe SICII..,'iJtl lA NilE Hood
A RB ot LRX 29
6 Sido C::1Htnftel at Sl.ouoh lA Mo•t"
C> AB ol LRX 28 tff'---::---::---------6 RB •• LRX 24
MS ebovo Wolnsto• 2 0, MS abo.,• MainiiOWI Z NE Hood Wa•tt.O.:::::::;~E;~J~~~~===o. t.~s ab••• Laa11 Cr••• w.outt. Lll11t LR. 16C. A li!IIS Cit l..aflo Croat Maut-h
L8 ati..RX 9 ~
A MS bolo• La no Creoll Ma111ttl
0, RB at LfiX II
ialluetna FiSIIIIw"••l SUtlofl
IIIIlS atWhiakon S\outft Hood ~
MS at Wtllm.kon Sla~~tttl Mallfli&
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Figure 1-2.
MAINSTEM SUSITNA. RIVER
STAFF GAGE LOCATIONS
l TALKEETNA -DEVIL CANYON I
MS-MAINSTEM
RB-RIGHT BANK
LB-LEFT BANK
C, STAFFGAGE
0 10
MILES
Mainstem staff gage locations in the Talkeetna to Devil
Canyon reach of the Susitna River for the open water
season of 1983.
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Table 1-2.
Site
Whiskers Slough
Slough 6A
Slough 8
Mainstem 2
Slough 8A
Slough 9
Side Channel 10
Side channel, side slough and upland slough sites in the
Ta 1 keetna to De vi 1 Canyon reach se 1 ected for
stage/discharge studies during the 1983 open water field
season.
River Mile 1/ Habitat T~Ee
101.2 Side Slough
112.3 Upland Slough
113.6 Side Slough
114.4 Side Channel
125.3 Side Slough
128.3 Side Slough
133.8 Side Channel
Lower Side Channel 11 135.0 Side Channel
Slough 11 135.3 Side Slough
Upper Side Channel 11 136.2 Side Channel
Slough 168 137.8 Side Slough
Slough 19 139.7 Upland Slough
Slough 20 140.1 Side Slough
Side Channel 21 140.6 Side Channel
Slough 21 141.8 Side Slough
Slough 22 144.2 Side Slough
11 River mile is determined from the most downstream portion of the
study site.
9
Whiskers Side
Slough and Creek
Figure 1-3.
SIDE CHANNEL, SLOUGH AND TRIBUTARY
STAGE AND DISCHARGE STUDY SITES
(TALKEETNA • DEVIL CANYON )
0 10
MILES
Side channel, slough and tributary sites selected for the
stage/discharge studies for the 1983 open water field
season.
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has on the site stage and streamflow. The stage data collected at the
head portion of each study site was obtained to aid in determining the
mainstem discharge required to breach the head of the study site.
2.1.3 Tributary Habitats
Stage and streamflow were monitored at seven tributaries located between
Talkeetna and Devil Canyon (Table 1-3, Figure 1-3). Streamflow stations
were placed in areas optimal for the collection of discharge data.
Study sites were selected based on consultation with the project
engineer to provide baseline stage and discharge data to be used to
develop rating curves and support evaluations of fish habitat by project
biologists.
2.2 Field Data Collection
2.2.1 Stage
Measurements of stage were obtained utilizing either standard staff
gages or continuous data recorders with associated pressure transducers
(datapods).
Stage data obtained using standard Leopold and Stevens (0.00-3.33 ft.)
staff gages were determined to the nearest one-hundredth of a foot. An
assigned elevation, which is referenced to a temporary benchmark (TB~1),
was determined for each gage with the TBM•s surveyed to a known ele-
vation (project datum). This allowed all resultant stage readings to be
converted to true water surface elevations. Staff gage installation and
monitoring procedures can be found in the ADF&G Su-Hydro Aquatics
Studies Procedures Manual Final Draft (ADF&G 1981a, 1983a, 1984).
Measurements of stage were obtained from staff gage observations at
least twice monthly during the open water field season at each stage
monitoring station within each study area. In addition, selected staff
gages located in the mainstem Susitna River were monitored more often to
ensure that the full range of mainstem discharge conditions occurring
during the 1983 open water season were evaluated.
The system used to continually monitor and record stage incorporated a
pressure transducer and electronic interface unit (designed by Dryden
and LaRue Consulting Engineers; Anchorage, Alaska) to record depth of
water over the transducer probes in millivolts (mV). Every 0.5 mV
represents 1.0 inch of water depth over the transducer probe. The
transducer probes utilized have a range of 1 to 80 inches of water with
an accuracy of 0.2 mV (i.e., 0.4 inches of water). The stream gage
datapods are programmed to record average mi 11 ivolt readings at 60
minute intervals on a UV-erasable, solid state Data Storage Module
(DSM). Using a 60-minute recording interval, the DSM reaches capacity
in 40 days and then must be exchanged for an erased (clean) 091.
Procedures involved in the installation and monitoring of the datapods
can be found in the FY84 ADF&G Su-Hydro Aquatic Studies Procedures
Manual, Final Draft (ADF&G 1984).
11
Table 1-3. Tributary study sites in the Talkeetna to Devil Canyon reach
selected for stage/discharge studies during 1983 open water
field season.
Site
Whiskers Creek
Lane Creek
Fourth of July Creek'
Gold Creek
Indian River
Waterfall Creek
Tributary at Head of Slough 20
Portage Creek
12
River Mile
101.4
113.6
131.1
136.7
138.6
140.3
140.6
148.9
TRM
0.4
0.3
0.2
0.2
0.6
0.1
0.1
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2.2.2 Discharge Procedures
Streamflow (discharge) measurements were obtai ned in the free-flowing
portion of the study area utilizing standard U.S.G.S. techniques employ-
ing either Price AA or Pygmy flow meters. At the time of the streamflow
measurement, a stage measurement was also obtained. Procedures utilized
in obtaining discharge measurements are found in the FY84 ADF&G Su Hydro
Aquatic Studies Procedures Manual, Final Draft (ADF&G 1984).
2.3 Analytical Approach
2.3.1 Mainstem Habitats
All stage data obtained from mainstem habitats were reduced to true
water surface elevations (as referenced to project datum). These data,
along with corresponding average daily discharges of the mainstem
recorded at Gold Creek (USGS 15292000) were plotted as simple stage/
discharge rating curves with water surface elevation presented on the y
axis and mean daily mainstem discharge on the x axis. A least squares
regression equation descr·ibing the rel ati onshi p of stage to discharge
was also derived for each plot.
2.3.2 Side Channel, Side Slough and Upland Slough Habitats
All stage data obtained at side channel and slough (side and upland)
habitats were reduced to true water surface elevations {as referenced to
project datum) and plotted against the mean daily mainstem discharge
recorded at Gold Creek (USGS 15292000). In addition, stage data col-
lected in conjunction with flow measurement at the stage/streamflow
monitoring station located in the free-flowing portion of each study
site were plotted as simple stage/streamflow rating curves. Measured
streamflow was also plotted with corresponding mean daily mainstem
discharge as measured at Gold Creek {15292000).
2.3.3 Tributary Habitats
All stage measurements obtained in tributaries were converted to true
water surface elevations as referenced to project datum. Measurements
of stage obtained from staff gage readings in conjunction with
streamflow measurements in Whiskers, Lane, and Fourth of July Creeks and
the unnamed tributary at the head of Slough 20 were plotted as simple
stage/discharge rating curves. At those sites where stage was monitored
with continuous data recorders (Portage and Gold Creeks, and Indian
River) measurements of water depth were converted to mean daily
streamflow. Measurements of water depth obtained in conjunction with
streamflow measurements were plotted as simple rating curves. Based on
these rating curves, streamflow was estimated from the continuous record
of water depth for Portage Creek, Indian River, and Gold Creek.
13
3.0 RESULTS
3.1 Mainstem Habitats
Mean daily discharge of the Susitna River was continually monitored by
the USGS at their Cantwell (15291500), Gold Creek (15292000), Sunshine
(15292780), Susitna Station (15294350), and Yentna River (15294345)
gaging stations during 1983. The USGS 1983 water year (October 1982 -
September 1983) discharge data are tabulated in Appendix Tables 1-A-1 -
1-A-5 and plotted in Figure 1-4. Plots of the mean monthly discharges
of the Susitna River at the USGS Gold Creek gaging station (USGS
15292000) for t~e 1981, 1982, and 1983 water years are presented with
the Gold Creek (USGS 15292000) 25 year record of mean monthly discharge
in Figure 1-5 (USGS 1981, 1982, 1983).
Stage was monitored at 46 stations in the mainstem Susitna River from
Talkeetna to Devil Canyon during the 1983 open water field season
(Figure 1-2). All stage measurements were converted to true water
surface elevations as referenced to project datum. These 1983 water
surface elevations and those obtained in 1982, along with corresponding
mean daily discharge of the mainstem Susitna River as measured at the
USGS Gold Creek gaging station (15292000), are presented in Appendix
Table 1-A-6. These data were used to generate simple water surface
elevation/discharge curves (Appendix Figures 1-A-1 -1-A-23).
The water surface elevation data obtained in 1982 for LRX 53 were not
included in these data sets. The 1983 stage data obtained from this
stage monitoring station, when plotted with the 1982 data, was found to
sufficiently differ in the observed water surface elevations. The 1983
and 1982 staff gage sites were determined not to be in the exact lo-
cation for each years observations. The mainstem water surface
elevations obtained for LRX 32 were actually observed approximately
100-200 feet upstream of LRX 32.
Although the water surface elevation (stage) in the mainstem Susitna
River is directly related to mainstem discharge, the functional
relationships determined for the mainstem rating curves (Appendix
Figures 1-A-1 -1-A-23) are also dependent upon site specific channel
geometry. This resulted in as many as three separate stage/discharge
relationships being determined for the data collected at each stage
monitoring station with each separate relationship being restricted to a
specific domain of mainstem discharge.
3.2 Side Channels
Measurements of stage and streamflow were obtained during the 1983 open
water field season at selected sites within five side channels in the
Talkeetna to Devil Canyon reach of the Susitna River (Table 1-2; Figure
1-3). The stage data obtained from the side channel stage monitoring
stations were plotted against the mean daily mainstem discharge recorded
at Gold Creek (USGS 15292000) in addition, stage data collected in
conjunction with flow measurements at each stage/streamflow monitoring
station were plotted as simple stage/streamflow rating curves. Measured
streamflow was also plotted with corresponding mean daily mainstem
discharge as measured at Gold Creek (15292000).
14
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220
1983
200
180
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USGS GAGING STATIONS
SUSITNA STATION
(USGS 1!12943!10, RM 26)
YENTNA RIVER
(USGS 1!129 434!1 I TRM 10)
SUNSHINE STATION
(USGS I!IZ92780, RM 84)
GOLD CREEK STATION
(USGS 1!1292000, RM 137)
CANTWELL STATION
(USGS 1!1291!100, RM223)
-10
1&1
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1!1
APRIL
30 I !I
MAY
31 I !I
JUNE
30 I !I
JULY
31 I !I
AUGUST
31 IS 30
SEPTEMBER
Figure 1-4. Comparison of the mean, daily Susitna River discharge for the USGS gaging stations
located at Susitna Station, Sunshine Station. Gold Creek Station, Cantwell Station
with the USGS gaging station on the Yentna River (near Susitna Station) for 1983.
-U) ....
()
0
0
0
:1< -w
(!)
I-' a: en ct
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50
---1981
-·-··1982
-···-1983
40 25 YEAR
RECORD ..... ,, \
I' \
30 I \
I \
\
~~~··~ \ '•, \ 20 • ~. ' . . \_ --. . .
\
10
0
OCT NOV DEC JAN FEB MAR APR MAY JUNE JULY AUG SEPT
'
DATE
Figure 1-5. Comparison of the 25 year record for mean monthly mainstem discharge for Gold
Creek (USGS 15292000) to the mean monthly mainstem discharge occurring at Gold
Creek for years 1981, 1982, and 1983 .
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The plots of water surface elevation (stage) versus mainstem discharge
(Appendix Figures 1-A-28-1-A-31; 1-A-37-1-A-41; 1-A-43-1-A-44;
1-A-50 -1-A-52) show that up to six hydraulic conditions each described
by their own stage/discharge relationship occur in side channel
habitats. The first three of these hydraulic conditions occurs when the
side channel flow is directly controlled by mainstem discharge. The
first hydraulic condition, referred to as "Backwater 11
, is restricted to
stage monitoring stations located in the vicinity of .the side channel
mouth and reflects a backwater hydraulic condition created by mainstem
discharge. The second hydraulic condition, referred to as "Controlled",
is restricted to stage monitoring stations isolated from backwater
effects which reflects the free flowing hydraulic con-dition when flow is
controlled by mainstem discharge. The third hydraulic condition,
referred to as "Breached", is limited to stage monitoring stations
located at the head of the study site and refers to the period of
breaching of the side channel head by mainstem discharge. The remaining
three hydraulic conditions occur when the side channel flow is not
controlled by the mainstem discharge. These three hydraulic conditions
result from surface water runoff (tributary inflow) and groundwater.
The first of the remaining three hydraulic conditions is referred to as
"Not Breached", and represents the period when the head of the side
channel is not breached and is dewatered. The second of the remaining
hydraulic conditions is referred to as 11 Not Controlled", and represents
the hydraulic condition in the free flowing portion of the side channel
when the site is not directly influenced by mainstem discharge. The
final hydraulic condit·ion is referred to as "No Backwater", and is
restricted to stage monitoring stations at the mouth of a side channel.
This hydraulic condition reflects an absence of backwater effects
created by mainstem discharge. Each of these hydraulic conditions is
restricted to a specific range (domain) of mainstem discharge occurring
at Gold Creek (USGS 15292000). The "Not Breached" hydraulic condition
was plotted using the thalweg elevation obtained from a cross sectional
profile at the head of the side channel versus a non-breaching mainstem
discharge. On those plots derived from the stage monitoring stations at
the heads of side channel habitats the lines depicting the 11 Breached"
and "Not Breached 11 condition may not intersect. This results when the
cross sectional profile used to determine the thalweg point was not
obtained at the location of the side channel which is initially breached
by mainstem discharge.
Results of the stage and discharge investigations for side channel
habitats are addressed below by site.
3.2.1 Mainstem 2 Side Channel (RM 114.4)
3.2.1.1 Site Description
Mainstem 2 Side Channel (Figure 1-3) is located on the east bank of the
Susitna River at river mile 114.4. It is approximately one mile in
length and is separated from the mainstem by two relatively large
vegetated islands. Approximately 0.3 miles upstream of the mouth, this
side channel divides into two forks, referred to as the northeast (NE)
and northwest (NW) channels. Prior to breaching, flow in the side
channel is provided by local surface water runoff and groundwater
inflow. Subsequent to breaching, the majority of the flow is provided
17
by turbid water from the mainstem. A substantial area of backwater
exists at the mouth of this side channel during low and high mainstem
flows.
During the 1983 open water field season, stage was monitored at seven
sites within this side channel. Streamflow was monitored at two of
these sites {Figure 1-6).
3.2.1.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
-
in Table 1-4. Measurements of water surface elevation along with -
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-28 -1-A-31. Measurements of streamflow along with corre-
sponding measurements of water surface elevation and mainstem discharge
at Gold Creek are presented in Appendix Table 1-A-8. -
3.2.1.3 Stage/Discharge Relationship
s·imultaneous measurements of stage and streamflow were obtained within
the free-flowing portions of the NW and NE channels of the Ma·instem 2
Side Channel study site {Appendix Table 1-A-8). From these measure-
ments, simple stage/stream flow rating curves were developed for each
channel (Figures 1-7 and 1-8). In addition, the streamflow data ob-
tained in each channel were plotted against the corresponding mainstem
discharge at Gold Creek {Figures 1-9 and 1-10). These curves represent
the breached hydraulic condition of each channel.
3.2.1.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in the NW and NE channels become governed by the mainstem at
discharges of 16,000 and 25,000 cfs at Gold Creek, respectively. These
controlling breaching discharges compare to lowest observed breaching
discharges for the NW and NE channels of 12,000 and 23,000 cfs at Gold
Creek, respectively.
3.2.1.5 Backwater
A substantial area of backwater occurs at the mouth of this side channel
during periods of low to high mainstem flow. Based on available stage
and channel geometry data {see Chapter 2), the area of backwater extends
to a point at least 2,000 feet upstream at mainstem discharges ranging
from 16,000 to 31,700 cfs at Gold Creek. At a mainstem discharge of
7,000 cfs, however, this area of backwater became reduced in size
extending approximately 800 feet into the side channel.
18
-
-
-
-
-1 -. ~
MAINSTEM 2
ll. STAFF GAGE
0 500
.I I
FEET
( Approx. Scola)
Figure 1-6. Site map of Mainstem 2 Side Channel which is located on the east bank of the Susitna
River at river mile 114.4.
Table 1-4. Range of water surface elevation and corresponding mainstem
discharge at Gold Creek (USGS 15292000) for each stage moni-
toring station within Mainstem 2 Side Channel at RM 114.4.
Gage
Site
114.4H1 (NE Head)
114.4S8 (NE Q-Site)
114.4H3 (NW Head)
114.4S5 (NW Q-Site)
114.4S7 (Upper Backwater)
114.4S9 (Lower Backwater)
114.4W6 (Mouth)
Range of
Water Surface
Elevation (ft)
20
1.81
2.47
2.66
3.13
2.93
2.38
4.79
Corresponding
r~ainstem
Discharge (cfs)
23,000 -31,700
10,000 -31,000
13,600 -31,700
10,000-27,400
16,000-31,700
18,600 -31,700
7,230-31,700
-
-
-
-
-
-
If"
!
-rn -u -~
....I u...
....I
LLI z z
<t
::z:::
(,)
LLI a
en
250
Mainstem 2-Side Channel
(NW Channel)
Gage 114.455
·10.4320 12.&aU
Q= 10 {WSEL-470)-
r2= 0.99
l.ll 2 z.s a 4 s s 7 a 9 10
WSEL-470 {feet)
15 20 2ll 30
Figure 1-7. Stage versus flow rating curve for Mainstem 2 Side
Channel (N.W. Channel), staff gage 114.455.
21
40
-(I) -u
3:
0
....I
1.1..
....I w z z
<(
J: u
w
0
(f)
30
2!5
Mainstem 2.Side Channa l
{ N E Channel)
Gage 114.458
1.5 t 2.5 I 4 5 • 7 •• 10 IS 20 21! 50
WSEL ..;470 (feet)
Figure 1-8. Stage versus flow rating curve for Mainstem 2 Side
Channel (N.E. Channel), staff gage 114.458.
22
-
-
-
40
-
4000
2500
2000
1500
-en 1000 -C.) 900 .... -~ 800
0 700 _.J
LL. 600
_.J
w z z
ct 400
:I:
(..)
w 300 -CJ
(/) 250
20
-
Mainstem 2 Side Channel
( NW Channel)
Gage 114.455
-"15.6251( 4.2488
QSL-JQ QIIIS}
r 2 = 0.99
Ui 2 2.5 3 4 5 678~10 115 20 Z5 30
MAINSTEM DISCHARGE AT GOLD CREEK (x 1000 cfs)
Figure 1-9. Side Channel flow versus mainstem discharge rating
curve for Mainstem 2 (N.W. Channel), staff gage
114.455.
23
40
rn -(J
3: g
LL.
--1
ILl z z
<C
J: u
ILl
0
(/)
700
60
500
400
300
250
so
70
60
50
40
30
25
20
15
Mainstem 2 Sidechannel
( NE Channel)
Gage 114.458
1.5 2 2.15 3 4
•
•
s s 7 a 11 10 liS 20 215 30
MAINSTEM DISCHARGE AT GOLD CREEK (x 1000 cfs)
40 50 ISO
Figure 1-10. Side Channel flow versus mainstem discharge rating curve
for Mainstem 2 (N.E. Channel), staff gage 114.458.
24
-
'~
-
-
-
-
I~
F""
I
3.2.2 Side Channel 10 (RM 133.8)
3.2.2.1 Site Description
Side Channel 10 (Figure 1-3) is located on the west bank of the Susitna
River at river mile 133.8. It is approximately 0.4 miles in length and
is separated from the mainstem by a large gravel bar. At high mainstem
discharges this gravel bar is breached at two locations. Prior to Side
Channel 10 head breaching, groundwater seepage provides clearwater flow
in this side channel. Subsequent to breaching, the majority of the flow
in this side channel is provided by turbid water from the mainstem. A
substantial area of backwater exists at the mouth of this side channel
at moderate to high mainstem flows.
During the 1983 open water field season, stage was monitored at seven
sites within this side channel. Streamflow was measured at three of
these sites (Figure 1-11).
3.2.2.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-5. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring site are presented in Appendix Figures
1-A-37 -1-A-39. Measurements of streamflow along with corresponding
me~surements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A-8.
3.2.2.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the free-
flowing portion of the Side Channel 10 study site (Figure 1-11, Appendix
Table 1-A-8). From the flow measurements obtained at staff gage site
133.8S3, a simple stage/streamflow rating curve was constructed (Figure
1-12). In addition, streamflow data obtained at this monitoring site
were plotted against corresponding mainstem discharge at Gold Creek
(Figure 1-13). The stage/streamflow relationship in this side channel
changes during streamflows approaching 300 cfs due to the difference in
channel geometry between the head portion and discharge station.
Streamflow measurements at staff gage sites 133.8S2 and 133.8S1 (Figure
1-11) were obtained to determine the contribution of mainstem water
breaching the gravel bar which separates Side Channel 10 from the
Susitna River to that breaching the head of the side channel (Appendix
Table 1-A-8).
3.2.2.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side channel become governed by the mainstem at a
discharge of 19,000 cfs at Gold Creek. This controlling breaching
discharge is the same as the lowest observed breaching discharge occur-
25
N
0"1
SIDE CHANNEL 10
6. STAFF GAGE
0 250
( Appros. Scale)
SUSITNA RIVER -
EB 134
Figure 1-11. Site map of Side Channel 10, which is located on the west bank of the Susitna River at
river mile 133.8.
-
-
,...~
I
l
Table 1-5. Range of water surface elevation and corresponding mainstem
discharge at Gold Creek (USGS 15292000) for each stage
monitoring station within Side Channel 10 at RM 133.8.
Gage
Site
133.8H4 (Head)
133.8$3 (Q-Site)
133.856
133.8S2
133.8S1
133.8S7
133.8W5 (Mouth)
Range of
Water Surface
Elevation (ft)
27
2.00
3.99
1.22
1.95
2.52
2.99
3.50
Corresponding
Mains tern
Discharge (cfs)
19,100 -29,900
12,200 -31,900
12,700 -23,300
12,200 -31,900
12,200 -31,900
12,200 -31,900
12,200 -31,900
-0 -u -3:
0
~ u..
~
LLJ z z
<(
~ u
IJ.I
0
en
200
Side Channel l 0
Gage 1:33.853 .
-Q.9412 4.2291
Q=lO (WSEL-650)
r2=0.98
~---Q= 10u922 {WSEL-650)11
"
6746
r 2 = 0.98
2 :S 4 5 6 7 I 910 20 40 eo eo 100
WSEL-650 {feet)
Figure 1-12. Stage versus flow rating curve for Side
Channel 10, staff gage 133.853.
28
-
en -u
3:
0
fl"" -1 u.
-1
LLJ z .z
<(
:I: u
IJJ c
Cl)
-
-
1000
900
800
700
600
500
400
300
2.00
100
90 so
70
so
50
40
10
9 a
7
6
4
3
Side Channel 10
Gage 133.853
Q :: 10511 .... ( )1.5441 .•
SL Qlll ~ r 2 = 0.92. ·
2 I 4 I I 7 I 110 20
•
•
40 10 10 100
MAINSTEM DISCHARGE AT GOLD CREEK { x 1000 cfs)
Figure 1-13. Side Channel flow versus mainstem discharge
rating curve for Side Channel 10, staff gage
133 .8S3.
29
ring at the head of Side Channel 10. The gravel island separating Side
Channel 10 from the Susitna River is breached at two locations when
mainstem discharge exceeds 30,000 cfs at Gold Creek.
3.2.2.5 Backwater
An area of backwater was observed to occur throughout the 1983 open
water field season at the confluence of the side channel and the main-
stem Susitna River. Based on stage and channel geometry data (see
Chapter 2), the area of backwater extended to a point at least 900 ft
upstream at mainstem discharges of 16,000 cfs at Gold Creek. From the
comparison of water surface elevation to the Slough 10 complex thalweg
profi 1 e (Chapter 2), a reduced area of backwater area occurred at
mainstem discharges as low as 12,000 cfs.
3.2.3 Lower Side Channel 11 (RM 134.6)
3.2.3.1 Site Description
Lower Side Channel 11 (Figure 1-3) is located on the east bank of the
Susitna River at river mile 134.6. It is approximately 0.7 miles in
length and is separated from the mainstem by a well vegetated island.
Just upstream of its confluence with Slough 11, the channel divides into
two forks, a NE fork and NW fork. Prior to breaching, flow in this side
channel is provided by the clear water flow from Side Slough 11.
Subsequent to breaching, the majority of the flow is provided by turbid
water from the mainstem. No backwater was observed at the mouth of this
side channel.
During the 1983 open water field season, stage was monitored a,t four
sites within this side channel. Streamflow was measured at one of these
sites (Figure 1-14).
3.2.3.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-6. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each monitor-
ing station are presented in Appendix Table 1-A-7. Plots of water
surface elevation versus corresponding mainstem discharge at Gold Creek
for each stage monitoring station are presented in Appendix Figures
1-A-40 -1-A-41. Measurements of streamflow along with corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A-8.
3.2.3.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the· free-
flowing portion of the Lower Side Channel 11 study site (Appendix Table
1-A-8). From these measurements, a simple stage/stream flow rating
curve was constructed (Figure 1-15). In addition, the streamflow data
obtained at this monitoring station were plotted against the correspond-
30
.~
-
-
-
-
-
-
-
-
w ......
---1 --, "~-C~l --~ 1 -] -:-...:Ji! ~c_-ccc_) --~l --c J B --1 -] 1
LOWER SIDE
CHANNEL II
6. STAFF GAGE
0 1000
FEET
(Approa. Soote)
Figure 1-14. Site map of Lower Side Channel 11, which is located at the east bank of the
Susitna River at river mile 134.6.
Table I-6. Range of water surface elevation and corresponding mainstem
discharge at Gold Creek (USGS I5292000) for each stage
monitoring station within Lower Side Channel II at RM I34.6.
Gage
Site
I34.6Sl (Mouth)
I34.6S2 {Q Site)
I35.3M4
135.3M2
Range of
Water Surface
Elevation (ft)
2.48
2.50
4.48
3.43
Head staff gage not installed
32
Corresponding
Mainstem
Discharge (cfs)
8,0IO -3I,900
8,0IO -3I,900
7,950-3I,900
5,020 -36,000
-
-
,lfli";'''j
-
-
-
-
-II) -(,)
3:
0 .
...J
I.L.
...J
LLJ
2
2
<[
:I:
(.) -LLJ a
en
10,000
9,000
a,ooo
7,000
6,000
2,000
1,500
Lower Side Channel II
Gage 134.652
1.5 2 2.5 3
0999 3.9198 Q = l 0 . ( W S E L -660)
r 2 = 0.99.
4 !I 818910 15 20 2!1 30
WSEL-660 (feet)
Figure 1-15. Stage versus flow rating curve for Lower
Side Channel 11, staff gage 134.6S2.
33
ing mainstem discharge at Gold Creek (Figure 1-16). Both of these
curves represent streamflow during breached conditions.
3.2.3.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side channel become governed by the mainstem at a
discharge of 5,000 cfs at Gold Creek. This controlling breaching
discharge is the same as the lowest observed breaching discharge for
this side channel.
3.2.3.5 Backwater
An area of backwater was not observed to occur at the mouth of this side
channel at any of the mainstem discharges observed during the 1983 open
water field season.
3.2.4 Upper Side Channel 11 (RM 136.2)
3.2.4.1 Site Description
Upper Side Channel 11 (Figure 1-3) is located on the east bank of the
Susitna River at river mile 136.2. It is approximately 0.4 miles in
length and is separated from the mainstem by a large vegetated island.
The head of Slough 11 joins this side channel just below the side
channel head. Prior to breaching, flow in the side channel is provided
by groundwater seepage. Subsequent to breaching, the majority of the
flow in the side channel is provided by turbid water from the mainstem.
An area of backwater occurs at the mouth of this side channel at moder-
ate to high mainstem discharge.
During the 1983 open water field season, stage was monitored at five
sites within this side channel. Streamflow was also measured at one of
these sites (Figure 1-17).
3.2.4.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-7. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-43 -1-A-45. Measurements of streamflow along with corre-
sponding measurements of water surface elevation and mainstem discharge
at Gold Creek are presented in Appendix Table 1-A-8.
3.2.4.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the free-
flowing portion of the Upper Side Channel 11 study site (Appendix Table
1-A-8). From these measurements a simple stage/stream flow rating curve
34
-
-
-
-'
,_
(I) -u
~
0
...1 u..
...1
lLI
1""'1 z z
<{ z
(.)
lLI
0 c;;
-
10,000
9.ooo
2,500
2,000
800
700
600
500
3
Lower Side Channel II
Gage 134. SS2
QSIC= I o'·22T. ( o ... l"MIO
r 1 =0.99' ~
1.1 Z Z.l I 4 a a 1 • • 10 II zo 21 30
MAINSTEM DISCHARGE AT GOLD CREEK { x 1000 cfs)
•o so eo
Figure 1-16. Side Channel f1ow versus mainstem discharge
rating curve for Lower Side Channel 11,
staff gage 134.6S2.
35
w
0'1
. J
@RM 136
UPPER SIDE
CHANNEL II
6 STAFF GAGE
0 450
FEET
(Approx. S ca It)
Figure 1-17. Site map of Upper Side Channel 11, which is located on the east bank of the
Susitna River at river mile 136.2 .
J.
-
R""
rj
Table 1-7. Range of water surface elevation and corresponding mainstem
discharge at Gold Creek (USGS 15292000) for each stage
monitoring station within Upper Side Channel 11 at RM 136.2.
Gage
Site
136.2H2 (Head)
136.2S1 (Q-Site)
136.2S5
136.254
136.2W3 (Mouth)
Range of
Water Surface
Elevation (ft)
2.75
2.81
0.42
2.87
2.72
37
Corresponding
Mainstem
Discharge (cfs)
16,000 -31,900
12,200 -36,000
11,400 -24,700
11,400-31,700
11,400 -31,700
was developed, (Figure 1-18). The stage/streamflow relationship occur-
ring in this side channel was found to change during the upper range of
streamflows with a point of inflection estimated to occur at a flow of
403 cfs. Only one flow measurement was obtained while the side channel
was not breached. In addition, streamflow measured in Upper Side
Channel 11 was plotted against corresponding mainstem discharge at Gold
Creek (Figure 1-19).
3.2.4.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side channel become governed by the mainstem at the
discharge of 16,000 cfs at Gold Creek. This controlling breaching
discharge compares to the lowest observed breaching discharge of 13,000
cfs at Gold Creek for this side channel.
3.2.4.5 Backwater
-
An area of backwater was observed to occur at the mouth of the side """"
channel during periods of moderate and high mainstem discharges. Based
on available stage and channel geometry (see Chapter 2) data, an area of
backwater was observed to occur at the mouth of this side channel to a
point at least 400 ft. upstream at mainstem discharges as low as 11,400
cfs at Gold Creek.
3.2.5 Side Channel 21 (RM 141.2)
3.2.5.1 Site Description
Side Channel 21 (Figure 1-3) is located on the east bank of the Susitna
River at river mile 141.2. It is approximately 0.9 miles in length and
is separated from the mainstem by a series of well-vegetated islands and
gravel bars. Prior to breaching of overflow Channel A5 (Figure 1-20),
flow in the side channel is provided by flow from Slough 21 and local
runoff and groundwater seepage. Subsequent to breaching, flow in the
side channel is provided by overflow channels which provide turbid water
from the mainstem. Backwater has been observed at the· mouth of this
side channel at high mainstem flows.
During the 1983 open water field season, stage was monitored at seven
locations within this side channel study site. Streamflow was monitored
at two of these stage monitoring stations (Figure 1-20).
3.2.5.2 General Results
Ranges of water surface elevation and corresponding ranges of rna i nstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-8. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-50 -1-A-52. Measurements of streamflow along with corre-
38
-
-
1"'1"
I
, I
.....
(I) -(.)
3:
0 _J
lL
_J
lLI z z
<1:
:I:
<..)
lLI
0
{/)
1000
900
800
700
500
400
~0
25
200
1!50
Upper Side Channel ll
Goqe 136.251
1.15 2 2.15 3 4
-a= l0 3
•
581,WSEL-675f"21111
r2= Q.gg
Eatimated IFG4 Syntllniud
5 II 7 I 9 10 Ill 20 215 50
WSEL-675 (feet)
Figure 1-18. Stage versus flow rating curve for Upper
Side Channel 11, staff gage 136.2S1.
39
40
rn -(..)
...
(!) c. c.
:::>
1000
900
800
700
600
500
400
'300
250
200
150
100
90
so
70 -
EiO
50
40
30
25
2
15
Upper Side Channel ll
Gage 136. 2SI
1.11 2 2.11 3 4 II 8 7 I 8 10 Ill 20 211 30 40 so
MAINSTEM DISCHARGE AT GOLD CREEK (x IOOOcfs)
Figure 1-19. Side Channel flow versus mainstem discharge
rating curve for Upper Side Channel 11,
staff gage 136.2S1.
40
-
-
-J ~~-, , ~c_cc' ·--cc-J -------j -----J -} ---J --
ADF& G
Q STATION
1 .. J l ) ---··---· J --I
SIDE CHANNEL 21
6 STAFF GAGE
0
I
FEET
1000
I
C Approa. See lei
Figure 1-20. Site map of Side Channel 21 which is located on the east bank of the Susitna River
at river mile 141.2.
Table 1-8. Range of water surface elevation and corresponding mainstem
discharge at Gold Creek (USGS 15292000) for each stage
monitoring station within Side Channel 21 at RM 141.2.
Range of Corresponding
Gage Water Surface Mainstem
Site Elevation { ftl Discharge (cfs}
140.6H5 (Upper A6) 1.12 21,600 -33,000
140.6H6 (Lower A6) 0.74 26,000 -33,000
140.6S3 (A5) 2.88 11 ,600 -33,000
140.6S2 2.02 11 ,100 -33,000
140.6S7 (Upper Q-Site) 1.45 11 ,000 -29 '900
140.6S4 (Lower Q-Site) 2.29 10,700 -33,000
140.6W1 (Mouth) 3.31 7,230-33,000
42
-
~I
~ .
.....
-
""1"
i
r'f"
I
I
T
I
I
rr il
T
.,-
1 I,
r !!
rr-
!
J
spending measurements of water surface elevation and mainstem discharge
at Gold Creek are presented in Appendix Table 1-A-8.
3.2.S.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained at two 1 ocations
within the free-flowing portion of Side Channel 21 (Figure 1-20, Appen-
dix Table 1-A-8). From these measurements, simple stage/streamflow
rating curves were constructed for each location (Figures 1-21 and
1-22). These rating curves represent streamflow conditions in the side
channel during periods while the side channel was breached and un-
breached. In addition, discharge data obtained at each location was
plotted against corresponding mainstem discharge at Gold Creek (Figures
1-23 and 1-24). These curves represent only the streamflow conditions
in the side channel while the side channel was breached.
3.2.S.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side channel downstream of overflows Channel A5 (Figure
1-20) become governed by the mainstem at a discharge of 12,000 cfs at
Gold Creek. This discharge compared to the lowest observed breaching
discharge of 9200 cfs for the AS overflow channel. The hydraulic
conditions present in Side Channel 21 upstream of overflow Channel AS
(Figure 1-20) become governed by the mainstem at a discharge of 24,000
cfs at Gold Creek. This discharge compared to the lowest observed
breaching discharge of 18,000 for the A6 overflow Channel (Figure 1-20).
3.2.5.5 Backwater
An area of backwater was observed to occur at the mouth of this side
channel during periods of moderate mainstem discharge. Based on avail-
able stage and channel geometry (see Chapter 2), Side Channel 21 has
been observed to have an area of backwater occurring from the mouth
upstream approximately 3,600 ft at a mainstem discharge of 16,000 cfs at
Gold Creek •
3.3 Side Sloughs
Measurements of stage and discharge were obtained during the 1983 open
water field season at selected locations within nine side slough study
sites located in the Talkeetna to Devil Canyon reach of the Susitna
River (Table 1-2, Figure 1-3). the stage versus mainstem discharge
plots developed for side sloughs (Appendix Figure 1-A-24 ·-1-A-25,
1-A-27 -1-A-28, 1-A-32 -1-A-36, 1-A-42, 1-A-4S -1-A-46, 1-A-48 -
1-A-49) reflect the same hydraulic conditions determined for side
channel habitats. The sta9e discharge relationships for side slough
habitats are identified (as were the side channel habitats) as
controlled, not controlled, backwater, no backwater, breached and not
breached. Results of the side slough stage and discharge investigations
are discussed below by site.
43
-en -(.) -;::
0
-' IJ...
-'
lJJ z z
<! :r: u
w
0
(/)
2.,000
Side Channel 21
Gage 140.654
z s • s e 7 e a1o zo
WSEL -730 {feet)
40 &a eo 100
Figure 1-21. Stage versus flow rating curve for Side
Channel 21, staff gage 140.6S4.
44
-
-
-
-
-
.-rn -(.)
3: g
LL.
.....l w z z
<( z u
w
0
en
-
1000
900
aoo
700
600
500
400
200
30
20
2
Side Channel 21
Gage 140.657
z :s 4 11878il0 20
WSEL-740 (feet)
40 so eo 100
Figure 1-22. Stage versus f1ow rating curve for Side
Channe1 21, staff gage 140.6S7.
45
4,000
3,000
2,000
1,000
900
800
(/) 700 -I.) 600
~ 500
0 400
-l
LL 300
-l w z 2.00 z
<1:
I u
w
0
(/)
30
2.0
Side Channel 21
Gage 140.654
-n.oz:n 3.113£
QsL=IO {QIIs)~
r 2 = 0.97
tO 100
MAIN STEM DISCHARGE AT GOLD CREEK (xiOOOcfs)
Figure 1-23. Side Channel flow versus mainstem discharge rating
curve for Side Channel 21, staff gage 140.654.
46
~I
~
~~
-
-
"""'
~:
-
..,.
I I,:'
"'" ·.I.
!
PI"'
I
.I
fj
i I
f""
I
I
!
-UJ -(.) -
3:
0
...1 u..
...1
LLI z z
<{
~
(.)
LIJ
0
en
1000
900
800
700
600
500
400
300
200
50
40
Side Channel 21
Gage 140.657
•
10 100
MAlNSTEM DISCHARGE AT GOLD CREEK {x !000 cfs}
Figure 1-24. Side Channel flow versus mainstem discharge rating curve
for Side Channel 21, staff gage 140.6S7 ..
47
3.3.1 Whiskers Side Slough (RM 101.2)
3.3.1.1 Site Description
Whiskers Side Slough (Figure 1-3) is located on the west bank of the
Susitna River at river mile 101.2. It is approximately 0.6 miles in
length and is separated from the mainstem by a well-vegetated island.
Prior to breaching, flow in this side slough is provided by Whiskers
Creek with additional smaller flow contributions provided by groundwater
seepage. Subsequent to breaching, flow in the side slough is provided
by both Whiskers Creek and turbid water from the mainstem. A sub-
stantial area of backwater occurs at the mouth of this side slough at
low to high mainstem flows.
During the 1983 open water field season, stage was monitored at three
sites within this side slough. Streamflow was also measured at one of
these sites (Figure 1-25).
3.3.1.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-9. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each
monitoring station within Whiskers Side Slough are presented in Appendix
Table 1-A-7. Plots of water surface elevation versus corresponding
mainstem discharge at Gold Creek for each stage monitoring station are
presented in Appendix Figures 1-A-24 -1-A-25. Measurements of slough
flow and corresponding measurements of water surface elevation and
mainstem discharge at Gold Creek are presented in Appendix Table 1-A-8.
3.3.1.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the free-
flowing portion of Whiskers Side Slough above its confluence with
Whiskers Creek (Figure 1-25, Appendix Table 1-A-8). From these measure-
ments a simple stage/streamflow rating curve was developed (Figure
1-26). This curve is representative of both breached and unbreached
conditions. Insufficient flow data was obtained during the breached
condition to relate the slough flow to that of mainstem discharge. The
flow measurement of 2 cfs was obtained slightly downstream of the
discharge station in a small riffle considered the hydraulic control for
the Whiskers Side Slough discharge station.
3.3.1.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough become governed by the mainstem at a
mainstem discharge of 23,000 cfs at Gold Creek. This discharge compares
to the lowest observed breaching discharge of 22,000 cfs at Gold Creek
for this side slough.
48
·-1 --}
--'---SI.JSITNA RIVER--
WHISKERS
SIDE SLOUGH
Cl STAFF GAGE
0 250
I I
FEET
(Appro a. Beale)
Figure 1-25. Site map of Whiskers Side Slough. which is located on the west bank of the
Susitna River at river mile 101.2.
Table 1-9.
Gage
Site
Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Whiskers Side Slough RM
133.6.
Range of
Water Surface
Elevation (ft)
Corresponding
Mainstem Discharge (cfs)
101.2H5 (Head
101. 2S3 ( Q-Site)
101. 2W1 (Mouth)
1.12
2.03
3.96
12,200 -18,600
8,440-37,000
8,440-37,000
50
-
-
-
-
-
'' 'I
....,
I
I!
-(I) -(,) -~ 3
0
_J
LL. 2
~
(!)
:::;)
0
_J en
w
0
(J)
Whiskers Side Slough
Gage 101.253
2 3 4 5 • 7 8 910 20
WSEL -360 {feet)
40 eo 80 100
Figure 1-26. Stage versus flow rating curve for Whiskers Side
Slough, staff gage 101.2S3.
51
3.3.1.5 Backwater
A substantial area of backwater occurs at the mouth of this slough
during periods of low to high mainstem discharge. Based on available
stage and channel geometry data (see Chapter 2), an area of backwater
occurs at the mouth of this side slough at mainstem flows at Gold Creek
as low as 8,440 cfs.
3.3.2 Side Slough 8 (RM 133.6)
3.3.2.1 Site Description
Side Slough 8, also known as Lane Creek Slough, is located on the east
bank of the Susitna River at river mile 133.6, (Figure 1-3). It is
approximately 0.4 miles in length and is separated from the mainstem by
a well-vegetated bar. Prior to breaching, flow in this side slough is
provided by local runoff and groundwater seepage. Subsequent to
breaching, flow is provided in the slough from turbid water in the
mainstem. An area of backwater occurs at the mouth of this side slough
during periods of moderate to high mainstem flows.
During the 1983 open water field season, stage was monitored at three
sites within this side slough. Streamflow was also measured at one of
these sites (Figure 1-27).
3.3.2.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-10. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each monitor-
ing station are presented in Appendix Table 1-A-7. Plots of water
surface elevation versus corresponding mainstem discharge at Gold Creek
for each stage monitoring station are presented in Appendix Figures
1-A-27 -1-A-28. Measurements of streamflow a 1 ong with corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek at the time of measurement are presented in Appendix Table 1-A-8.
3.3.2.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the free-
flowing portion of Side Slough 8 (Appendix Table 1-A-8). From these
measurements, a simple stage/streamflow rating curve was constructed -
(Figure 1-28). In addition, streamflow data obtained at this site were
plotted against corresponding mainstem discharge at Gold Creek (Figure
1-29). These plots represent streamflow conditions during both breached
and unbreached, periods.
3.3.2.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough is governed by the mainstem at a mainstem
52
-'
-
U'l w
_--i ---1 ----j .. --l
G) 113.6 S U S I T N A R I V E H -----
RAILROAD
+-'-++·+++ I I I I I I t I 1'-t-+-f I I I I I I I t I ·-"-++-Hf-+-+-t-l-H--H+-H+I-++-f++++l-++-1-++-l-+-t-+-l-+-J-+--l-++H
SLOUGH 8
.•,
t .. l:l STAFF GAGE ,. ,.
": ~ ,, .. ~ 0 r. ' ' ..
·' '~ FEET
" ~· (Approl. Soale)
··-
Figure 1-27. Site map of Side Slough 8, which is located on the east bank of the
Susitna River at river mile 113.6.
no
Table 1-10. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 8 (Lane Creek
Slough) at RM 133.6.
Gage
Site
113.6H4 (Head)
113.6S2 (Q-Site)
113.6W8 (Mouth)
Range of
Water Surface
Elevation (ft)
0.80
2.78
3.99
54
Corresponding
Mainstem Discharge (cfs)
26,000 -32,000
9,640 -32,000
9,640 -31,900
.~
-
-
'~
'i
r
I
,!
li :
-i
-flj -CJ -3:
0
..J
~
%
(!)
~
0
..J
(/)
I£J c
en
2
10
9
Side Slough 8
Gage 113.652
Q = IOS.8788(WSEL-460)8-.8-14_1 __ _
r 2 =0.73
I.S 2 2.!1 3 4 II 8 7 8 9 10
WSEL-460 (feet)
18 20 211 50
Figure 1-28. Stage versus flow rating curve for Slough
8, staff gage 113.6S2.
55
50
30
2.5
20
-15 rn -(.)
3: g
LL
~
(!)
::>
0
....J
(J)
LLJ
0
10
9
8
7
6
u; 4
2.
2
1.5
Side Slough 8
Gage 113.652
1.5 2 2.5 3 4 5 8 1 • i 10 Ill 20 215 30
M AINSTEM DISCHARGE x liOOO cfs)
Figure 1-29. Slough flow versus mainstem discharge
rating curve for Side Slough 8, staff
gage 113.6$2.
56
-
-
-
-
-
-
40 !10 so
--
-
-I
discharge of 24,-000 cfs at Gold Creek. This controlling discharge is
the same as the lowest observed breaching discharge for this site.
3.3.2.5 Backwater
An area of backwater was observed to occur at the mouth of this slough
during periods of moderately low to high mainstem discharge. Based on
available stage and channel geometry (see Chapter 2) data, an area of
backwater occurs at the mouth of this side slough at mainstem discharges
at Gold Creek as low as 11,600 cfs.
3.3.3 Side Slough SA (RM 125.3)
3.3.3.1 Site Description
Side Slough SA {Figure 1-3) is located on the east bank of the Susitna
River at river mile 125.3. It is approximately two miles in length and
is separated from the mainstem by two relatively large vegetated is-
lands. Approximately 0.5 miles upstream of the mouth, the channel
divides into two forks, a NW fork and NE fork. Two beaver dams are
present on the side slough with one occurring just downstream of the
fork and one just upstream of the fork in the NE channe 1. Prior to
breaching flow in the side slough is provided by local runoff and
groundwater seepage. Subsequent to breaching flow is primarily turbid
water from the mainstem. A substantial area of backwater occurs at the
mouth of this side slough during periods of low to high mainstem flows.
During the 19S3 open water field season, stage was monitored at nine
sites within this side slough. Slough flow was also measured at three
of these sites (Figure 1-30).
3.3.3.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-11. Measurements of water surface elevations along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-32 -1-A-34. Measurements of streamflow and corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A-8.
3.3.3.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained at three locations
within the free-flowing portion of Side Slough SA, {Appendix 1-A-8).
From these measurements, simple stage/streamflow rating curves were
developed (Figures 1-31 to 1-33). These curves represent streamflow
during periods while the s 1 ough was both breached and not breached by
mainstem water with the exception of the curve for the NE channel
(Figure 1-33). The NE Channel was not observed breached during the 19S3
open water season. Flow data obtained at each discharge station other
57
SLOUGH BA
6 STAFF GAGE
0 2000
FEET
( Approo. Scal•l
RIVER
Figure 1-30. Site map of Side Slough 8A, which is located on the east bank of the Susitna
River at river mile 125.3.
l
-
r I,
rl
!I
I
I
Table 1-11. Range of water surface elevation and corresponding main-
stem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 8A at R~1
125.3.
Gage
Site
125.3H7 (NE Head)
125.3S8
Range of
Water Surface
Elevation (ft)
125.3S1 (NE Channel Q-Site)
125.3H2 {NW Head)
Dewatered
0.55
1.16
0.50
0.80
0.45
0.65
2.61
3.42
125.3S3 {NW Q-Site)
125.3S5
125.3S4
125.3S6 (Backwater)
125.3W5 (Mouth)
59
Corresponding
Discharge (cfs)
5,000 -31,000
20,600 -31,000
5,400 -31,000
27,400-32,000
10,600 -31,000
7,230-31,000
7,230-31,000
7,230-31,000
7,230-36,000
(I) -0
~
(!)
=>
0
...J en
a:::
UJ :=
0
...J
100-
90-
so~
70-
60-
~0-
40-
30
2.5-
20-
15·
tO·
9
a·
7
6·
4
3
2.~
2
1.5-
Lower Slough SA
Gage 125.354
' 1.5 z 2.5 3
Q= JC{ 1448 (WSEL-560)14
'
2844
___-r2 = 0.99
' ' 4 s 6 r a e 10 It! zo 28 30
WSEL-560 {feet)
Figure 1-31. Stage versus flow rating curve for Side
Slough 8A, staff gage 125.3S4.
60
I
40
-
--
-
-
-
-
....
--
~ 70
I 60 Slough SA . I
50 (NW Channel)
Gage 125.353
40
30
.20
10
9
l"f" a
7
6
en !S -() 4
3: 3
0 _J
LL "'Q: IO·za.on4{ WSEL-560)37.0llll7
2
:c
(.!) -· => r 2 = 0.97
' 0
' _J
U) 1.0
0.9
OS
0.7
0.6
0.5
0.3
f'
I
I
1.!1 3 4' G 5 7 8 9 10 20 30 40
~
I WSEL-560 (feet)
Figure 1-32. Stage versus flow rating curve for Side
Slough 8A, staff gage 125.3S3.
61
50-
40-
30
25-
20
-U) 15--u
3:
0 10 ...J
IJ.. 9
~ a-
<!)
7-:=l
0 6-....J
(J)
ILl 5
0
(J) 4
3
2.5-
2-
1.5-
Side Slough SA
(NE Channel)
R a M Recorder
I.S 2 2.5 3 4 !56 78910 20 2!5 30
WSEL-560 {feet)
Figure 1-33. Stage versus flow rating curve for Side
Slough 8A, staff gage at R&M recorder.
62
....
-
40
-
-
,l"l"'
-
than the discharge station in the NE channel were also plotted against
the corresponding mainstem discharge at Gold Creek (Figures 1-34 and
1-35). Due to an absence of breaching flows in the NE channe 1, this
site was not plotted against mainstem discharge.
3.3.3.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present at the NW fork of this side slough become governed by the
mainstem at a mainstem discharge of 27,000 cfs at Gold Creek. This
controlling flow is the same as the lowest observed breaching discharge
for this fork. Breaching of the NE Channel was not observed in 1983 but
is estimated to occur at a mainstem discharge at Gold Creek of 33,000
cfs.
3.3.3.5 Backwater
An area of backwater was observed to occur at the mouth of this side
slough during periods of low to high mainstem discharge. Based on
available stage and channel geometry data (see Chapter 2), a substantial
area of backwater occurs at the mouth of this side slough at mainstem
discharges at Gold Creek as low as 7,230 cfs.
3.3.4 Side Slough 9 (RM 128.3)
3.3.4.1 Site Description
Side Slough 9 (Figure 1-3) is located on the east bank of the Susitna
River at river mile 128.3. It is approximately 1.2 miles in length and
is separated from the mainstem by a large vegetated island. Prior to
breaching, flow ·in the slough is provided by two small tributaries and
groundwater seepage. Subsequent to breaching, flow is primarily
provided as turbid water from the mainstem. An area of backwater occurs
at the mouth of this side slough at moderate to high mainstem discharges
at Gold Creek.
During the 1983 open water field season, stage was monitored at three
sites within this side slough. Streamflow was also measured at one of
these sites (Figure 1-36).
3.3.4.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-12. Measurements of water surface elevation and correspond-
ing mainstem discharge at Gold Creek obtained at each stage monitoring
station are presented in Appendix Table 1-A-7. Plots of water surface
elevation versus corresponding mainstem discharge at Gold Creek for each
stage monitoring station are presented in Appendix Figures 1-A-35 -
1-A-36. ~~easurements of streamflow and corresponding measurements of
water surface elevation and mainstem discharge at Gold Creek are
presented in Appendix Table 1-A-8.
63
50
40
30
25
()) ....
() 20
3
0 15 ...J
~
:I:
(.!)
~
0
...J 9 ff)
8 w
0 7
ff) 6
5
2.5
2
1.5
Side Slough SA.
Goge 125.354
1.e
_ 018.2034( Q )4.63S9
QSL-1 liS -
r 2 = 0.97
2 2.S 3 4 ll 6 7 8 9 10 18 ZO Z!l 30 40 so 60 7Q
MAINSTEM DISCHARGE AT GOLD CREEK ( x 1000 cfs)
Figure 1-34. Slough flow versus mainstem discharge rating
curve for Side Slough BA, staff gage 125.3S4.
64
-
-
-
~
-
-
-
-
-
~.
i f""'\
' I I
"""' I
I
-
....
!
....
I
-
-en -t) -3:
0
..J u.
~
(!)
::J
0
..J
(f)
UJ c
(f)
100-
90
80
70
60
50
2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.
0.2
Side Slough SA
( NW C honnel)
Gage 125.:353
Q = IOH.7271 ( Q '8.4884
Sl.. Ma'-----rt = 0.92
•
•
•
0.1-t---....,--r--..,....,...,....,..'I"""'T"-r-----r--.,r--..,-..,....,.....,..,...,...,....--.....,
z 3 4 5 • 7 8 910 20 40 60 80 100 zoo
MAIN STEM DISCHARGE AT GOLD CREEK (x IOOOcfs}
Figure 1-35. Slough flow versus mainstem discharge rating
curve for Side Slough 8A, staff gage 125.353 .
65
--129
.... · ~ .. : .. :. ·. ':
.:
·.:·
·~-
..._; .
. ,. SLOUGH 9
l:i STAFF GAGE
0 1000 L'----....J' FEET
( "PPIIOX. SCA L.l!:l
Figure 1-36. Site map of Side Slough 9 which is located on the east bank of the Susitna
River at river mile 128.3.
J
-
,"'F"
'I""'
!
r
I
Table 1-12. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 9 RM 128.3.
Gage
Site
128.3H2 (Head)
128 .3S1 (Q-Site)
128.3W3 (Mouth)
Range of
Water Surface
Elevation (ft)
0.44
1.25
4.40
67
Corresponding
Mainstem Discharge (cfs)
17,800-22,700
10,700 -30,000
8,760 -36,000
3.3.4.3 Stage/Discharge Relationship
Measurements of stage and streamflow were obtained within the
free-flowing portion of Side Slough 9 (Figure 1-36) by both ADF&G and
R&M Consultants. The streamflow measurements obtai ned by R&M
Consultants in 1982 and those obtained by ADF&G in 1982 and 1983 were
plotted as a simple stage/streamflow rating curve (Figure 1-37). The
stage measurements corresponding with the streamflow measurements
obtained by R&M Consultants for 1982 have been found to be slightly
higher than those stage measurements corresponding to the 1982 and 1983
ADF&G streamflow measurements. This variation has been attributed to a
difference in 1 ocati on between the ADF&G and R&M Consultants stage
monitoring stations. Two lines have been constructed depicting the
stage/streamflow re 1 ationshi ps determined by measurements obtai ned by
R&M Consultants and the stage/streamflow relationship determined by
ADF&G. The streamflow measurements obtained while the slough was
breached during both 1982 and 1983 have been plotted with the
corresponding mainstem discharge at Gold Creek (Figure 1-38).
3.3.4.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough become governed by the mainstem at a
mainstem discharge of 19,000 cfs at Gold Creek. This controlling
discharge compar~s to the lowest observed breaching discharge of 16,000
cfs at Gold Creek for this site.
3.3.4.5 Backwater
An area of backwater was observed to occur at the mouth of Side Slough 9
during periods of moderate to high mainstem discharges. Based on
available stage and channel geometry (see Chapter 2) data, an area of
backwater occurs at the mouth of this side slough at mainstem flows as
low as 15,200 cfs.
3.3.5 Side Slough 11 (RM 135.7)
3.3.5.1 Site Description
Side Slough 11 (Figure 1-3) is located on the east bank of the Susitna
River at river mile 135.7. It is approximately 0.9 miles in length and
is separated from the mainstem by a large vegetated island. Prior to
breaching flow in this side slough is provided by groundwater seepage.
Subsequent to breaching flow is primarily turbid water from the
mainstem. An area of backwater occurs at the mouth of this side slough
during moderate and high mainstem discharges. ·
During the 1983 open water field season, stage was monitored at three
sites within this side slough. Streamflow was also measured at one of
these sites (Figure 1-39).
68
-
""'1,
-
·~ I
I
-
-rn -0
3:
0
...J
I.L.
:c
(!)
:::>
0
...J
(J)
30
20
Slough 9
Gage 128.351
I
I
•
•12.8111 ( )Z4.Z0&4 -~---Q = 1.0 WSEL-590
~= 0.99
6 R8 M Data ( 1982}
e ADF 8G Data
( 1982 a 1983)
z a 4 a a 7 8 • 10 10 40 eo 80 100
WSEL-590 (feet)
Figure 1-37. Stage versus flow rating curve for Side Slough 9,
staff gage 128.3Sl.
69
u; -u
3::
0
...J
LL
:I:
(!)
::::l
0 20
...J
(/)
LLJ
0
(/)
2
Side Slough 9
.Goge 128.351
·ST. ner e.o111e
o, ... = 10 < onl--------
r& = 0.91 ._
10 100
IVIAINSTEM DISCHARGE AT GOLD CREEK lx IOOOcfsl
Figure 1-38. Slough flow versus mainstem discharge rating curve
for Side Slough 9, staff gage 128.3Sl.
70
-
-
-
~I
·.:·· ·.11',.
------5
__ c-_:l
AOFBG Q
STAT ION
@ RM 136
---j
SLOUGH II
6 STAFF GAGE
0 450
FEET
(Approx. S ca I e)
Figure 1-39. Site map of Side Slough 11, which is located on the east bank of the Susitna
River at river mile 135.3.
3.3.5.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-13. Measurements of water surface elevation and
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station within Side Slough 11 are presented in Appendix Table
1-A-7. Plots of water surface elevation versus corresponding mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Appendix Figures 1-A-42. Measurements of streamflow and
corresponding measurements of water surface elevation and mainstem
discharge at Gold Creek are presented in Appendix Table 1-A-8.
3.3.5.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Side Slough 11 (Figure 1-39,
Appendix Table 1-A-8). From these measurements a simple stage/stream-
flow rating curve was constructed (Figure 1-40). This curve represents
only streamflow conditions during unbreached conditions. This slough
was not breached by rna i nstem water during 1982 or 1983 therefore,
streamflow measurements were not plotted against corresponding mainstem
discharge.
3.3.5.4 Mainstem Controlling and Breaching Discharges
Side Slough 11 has not been observed breached by mainstem discharge
during 1982 or 1983. Based on available streamflow and water surface
elevation data and the professional opinion of the project engineer,
Side Slough 11 is estimated to be breached when mainstem discharge at
Gold Creek exceeds 42,000 cfs. The controlling discharge for Side
Slough 11 is the same as that estimated to breach the slough.
3.3.5.5 Backwater
An area of backwater was observed to occur at the mouth of this slough
during periods of moderate to high mainstem discharge. Based on avail-
able stage and channel geometry data (see Chapter 2), an area of backwa-
ter occurs at the mouth of this side slough at a mainstem discharge as
low as 10,600 cfs. This backwater area is localized within the vicinity
of the mouth of the slough.
3.3.6 Side Slough 16B (RM 137.8)
3.3.6.1 Site Description
Side Slough 16B is located on the west bank of the Susitna River at
river mile 137.8 (Figure 1-3). It is approximately 0.4 miles in length
and is separated from the mainstem by a large vegetated island. Prior
to breaching, flow in this side slough is provided by groundwater
seepage. Subsequent to breaching, flow in this side slough is primarily
turbid water from the mainstem. An area of backwater has not been
observed at the mouth of this side slough.
72
-
-
-
-
-
-
-
-
-
r
'I
Table 1-13. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 11 ·RM 135.7.
Gage
Site
135.3H3 (Head)
135.356 (Q-Site)
135.3Wl (Mouth)
Range of
Water Surface
Elevation (ft)
Dewatered
0.18
4.00
73
Corresponding
Mainstem Discharge (cfs)
less than 40,000
4,900 -36,000
7,230-31,900
20-
15-
10-
u; -9-
CJ 8-
~ 7-
0
_J 6-
IJ..
:r: 5-
(..!)
:J
0 4-
_J en
IJJ 3-
0
en 2.5-
2
1.5-
Side Slough II
Gage 135.356
•4:5.82112 !18.39611 -----Q = !0 (WSEL-665)
r2:Q.81
I
1.5 2 2.11 :s 4 II II 7 8 9 10 15 20 25 30
WSEL-665 {feet)
Figure 1-40. Stage versus flow rating curve for Side
Slough 11, staff gage 135.356.
74
40 -
-
-
-
During the 1983 open water field season, stage was monitored at three
sites within Side Slough 16B. Streamflow was also measured at one of
the sites (Figure 1-41).
3.3.6.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-14. Measurements of water surface elevation and
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-45 -1-A-46. Measurements of streamflow along with corre-
sponding measurements of water surface elevation and mainstem discharge
at Gold Creek are presented in Appendix Table 1-A-8.
3.3.6.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Side Channel 16B (Figure 1-41).
From these measurements, a simple stage/streamflow rating curve was
deve 1 oped {Figure 1-42). This curve represents streamflow conditions
during both breached and nonbreached conditions. In addition, the
streamflow data obtained while the slough was breached was plotted
against the corresponding mainstem discharge at Gold Creek {Figure
1-43).
3.3.6.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough become governed by the mainstem at a
mainstem discharge of 23,000 cfs at Gold Creek. The lowest mainstem
discharge at Gold Creek observed to breach Side Slough 16B was 20,000
cfs.
3.3.6.5 Backwater
Based on available stage and channel geometry data (see Chapter 2), an
area of backwater has not been observed to occur at the mouth of Side
Slough 16B.
3.3.7 Side Slough 20 (RM 140.2)
3.3.7.1 Site Description
Side Slough 20 is located on the east bank of the Susitna River at river
mile 140.2 (Figure 1-3). It is approximately 0.5 miles in length and is
separated from the mainstem by a vegetated island. Prior to breaching,
flow in this side slough is provided by two small tributaries and
groundwater seepage. Subsequent to breaching, flow in Side Slough 20 is
primarily turbid water from the mainstem and clear water outflow from
the larger of its' two tributaries (Waterfall Creek). An area of
75
SLOUGH 168
6 STAFF GAGE
.0 250
FEET
( Approx. 5 ca Ia )
, •.. :. :~·-·;~F 8G
.;:·:'';!'.t·· Q STATION
(!) 137.9 ------SUSITNA RIVER---
Figure 1-41. Site map of Side Slough 168, which is located on the west bank of the
Susitna River at river mile 137.8.
_]
r
'F""
I
·"'"' il
:I
,_
I
I
I
Table 1-14. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 16B at RM
137.8.
Gage
Site
138.0H3 (Head)
138.0S5 (Q-Site)
138.0W1 (Mouth)
Range of
Water Surface
Elevation (ft)
1.42
1.64
2.88
77
Corresponding
Mainstem Discharge (cfs)
20,200 -31,900
11 ,700 -28,200
12,200 -31,900
-IIJ -0
400
Side Slough 168
300 Gage 138.055
200
.01
Q= 10 1
•
8848 {WSEL-700)1
"
7778
2_ ----. r -0.99 ..
•
.oz .oa .o4 .OIJ .oe .01 .oa.oa.1o .20 .40 .10 .10 1.0
WSEL -700 (feet}
Figure 1-42. Stage versus flow rating curve for Side
Slough 168, staff gage 138.055.
78
~,
-
-
-
-
-
r
'I -(I) -0
~
0 _.
u.
~
(!)
:::>
0 _.
en
r
400
Slough 16 8
300 Gage 138.055
•
200
100
90
80
76
60
50
40
30
20
2 zo . 40 10 10 100
MAINSTEM DISCHARGE AT GOLD CREEK (xiOOO)
Figure 1-43. Slough flow versus mainstem discharge rating curve
for Side Slough 168, staff gage 138.0S5.
79
200
backwater occurs at the mouth of this side slough during periods of low
to high mainstem flows.
During the 1983 open water field season, stage was monitored at three
sites within Side Slough 20. Streamflow was also measured at one of
these sites (Figure 1-44).
3.3.7.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-15. Measurements of water surface elevation and correspond-
ing mainstem discharge at Gold Creek obtained at each stage monitoring
station within Side Slough 20 are presented in Appendix Table 1-A-7.
Plots of water surface elevation versus corresponding mainstem discharge
at Gold Creek for each monitoring site are presented in Appendix Figures
1-A-48 and 1-A-49. Measurements of streamflow and corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A-8.
3.3.7.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Side Slough 20 (Appendix Table
1-A-8). From these measurements, a simple stage/streamflow rating curve
was developed {Figure 1-45). This curve represents streamflows during
both breached and unbreached conditions. In addition, the streamflow
data obtained while the slough was breached were plotted against the
corresponding mainstem discharge at Gold Creek (Figure 1-46).
3.3.7.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough become governed by the mainstem at a
mainstem discharge of 23,000 cfs at Gold Creek. The lowest observed
-
mainstem discharge at Gold Creek to breach Side Slough 20 is 22,000 cfs. ~·
3.3.7.5 Backwater
An area of backwater was observed to occur at the mouth of this slough
during periods of moderate to high mainstem discharge. Based on avail-
able stage and channel geometry data (see Chapter 2), an area of back-
water occurs in the immediate vicinity of the mouth of this side slough
at a mainstem discharge of 7,230 cfs at Gold Creek.
3.3.8 Side Slough 21 (RM 141.8)
3.3.8.1 Site Description
Side Slough 21 is located on the east bank of the Susitna River at river
mile 141.8 (Figure 1-3). It is approximately 0.5 miles in length and is
separated from the mainstem by a large vegetated island. Approximately
half way up the side slough, the channel divides into two forks, a NW
80
-
-
]
ffi 140. I
SLOUGH 20
b. STAFF GAGE
0 250
FEET
(Approx. Seal•)
·_c:c_=J
_...,..,..._ __ SUS I TN A Rl V£R-
Figure 1-44. Site map for Side Slough 20, which is located on the east bank of the Susitna
River at river mile 140.2.
Table 1-15. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 20 at RM
140.2.
Range of
Gage Water Surface Corresponding
Site Elevation (ft) Mainstem Discharge (cfs)
140 .1H3 (Head) 0.99 21,500 -32,500
140.1S5 (Q-Site) 1.43 8,480 -32,500
140 .1W4 (Mouth) 2.43 8,480 -32,500
82
-
-
~!,
-
~
-
-
-
-
-
T
~
.I
ti"
.I
i
~ .,
r •I
I .,
r
I
I
r
'
-rn .....
(.J
3:
0
~
~
J:
(!)
=> 0
~
(/)
w
Cl
(/)
400
300
2
Side Slough 20
Gage 140./S 5
z
•111.4718 19.&184 ...,..~---Q = 10 (WSEL-720)
r 2 = 0.90
4 5 6 T 6 9 10 ZO 40 eo eo tOO
WS EL -720 (feet)
Figure 1-45. Stage versus flow rating curve for Side
Slough 20, staff gage 140.1S5.
83
-(/) -(.) -
400
300
200
Side Slough 20
Gage 140.1S5
2 3 4 a a 7 a e1o
•
•
20 80 10 100
MAlNSTEM .DISCHARGE AT GOLD CREEK (xiOOO cfs)
Figure 1-46. Slough flow versus mainstem discharge rating curve
for Side Slough 20, staff gage 140.1S5.
84
-
-
r
.I
r
I
!"""
I
I .
and NE fork. Prior to breaching, the flow in this side slough is
provided by groundwater seepage and local runoff. Subsequent to
breaching, flow in the slough is provided by turbid water from the
mainstem. An area of backwater does not occur at the mouth of this side
slough.
During the 1983 open water field season, stage was monitored at four
sites within this side slough. Streamflow was also monitored at one of
these site (Figure 1-47).
3.3.8.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek at time of measurement for each stage monitoring
station are presented in Table 1-16. Measurements of water surface
elevation and corresponding mainstem discharge at Gold Creek obtained at
each stage monitoring station are presented in Appendix Table 1-A-7.
Plots of water surface elevation versus corresponding mainstem discharge
at Gold Creek for each stage monitoring station are presented in
Appendix Figures 1-A-53 -1-A-54. Measurements of streamflow and
corresponding measurements of water surface elevation and mainstem
discharge at Gold Creek are presented in Appendix Table 1-A-8.
3.3.8.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow was obtained at one
site within the free-flowing portion of Side Slough 21 (Appendix Table
1-A-8). From these measurements a simple stage/streamflow rating curve
was developed (Figure 1-48). This curve represents streamflows during
both breached and unbreached conditions In addition, the streamflow data
obtained while this slough was breached was plotted against the
corresponding mainstem discharge (Figure 1-49).
3.3.8.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in the NW and NE channels of this side slough become governed by
the mainstem at mainstem discharges of 25,000 and 28,000 cfs at Gold
Creek respectively. The 1 owest observed rna i nstem discharge to breach
the NW and NE channels were 23,000 and 26,000 cfs at Gold Creek respec-
tively. The breaching of the NW channel (25,000 cfs) governs the
hydraulic conditions present in the portion of Side Slough 21 downstream
of the fish in the slough.
3.3.8.5 Backwater
Based on available stage and channel geometry data (see chapter 2) and
field observations no backwater was found to occur in Side Slough 21 at
varying levels of mainstem discharge.
85
. J
co
CJ)
~:·-.:·:.·.".·:.•. ""~·· ...
SIDE SLOUGH 21
!'.::!. STAFF GAGE
0
I
FEET
1000
I
Figure 1-47. Site map for Side Slough 21, which is located on the east bank of the Susitna River at
river mile 141.8 .
""" I
Table 1-16. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 21 at RM
141.8.
'Gage
Site
142.0H1 (NE Head)
142.0H3 (NW Head)
142.0S6 (Q-Site)
142.0W5 (Mouth)
Range of
Water Surface
Elevation (ft)
0.65
0.74
2.18
2.06
87
Corresponding
Mainstem Discharge (cfs)
28,200 -33,000
25,600 -33,000
2,900 -33,000
7,230-33,000
-(I) -C.)
100
2
1.5
Side Slough 21
Gage 142.056
1.15 it Z.IS 3 4 S 6 7 I 9 10 liS zo ae :so
WSEL-740 (feet)
Figure 1-48. Stage versus flow rating curve for Side
Slough 21, staff gage 142.056.
88
-
-
f!lJ/iffl~
-
40
......
I'
U) -u
3:
0 ~
lL
:r:
(.!)
:::::>
0
~ en
LLI
9 en
40
30
15
10
9
8
7
6
5
4
3
2.5
2
1.5
10
Side Slough 21
Gage 142.056
~211.21117 •. , ....
J...a---QSL: 10 (Q,.11 )
r 1 = 0.99
15 20 25 30 40 eo so ro eo 90 100 150 200 250 300 400 500 600
MAlNSTEM DISCHARGE AT GOLD CREEK (x 1000 cfs)
Figure 1-49. Sl~ugh flow versus mainstem discharge rating
curve for Side Slough 21, staff gage 142.0S6.
89
3.3.9 Side Slough 22 (RM 144.2)
3.3.9.1 Site Description
Side Slough 22 is located on the north bank of the Susitna River at
river mile 144.2 (Figure 1-3). It is approximately 0.5 miles in length
and is separated from the mainstem by a narrow vegetated island. Prior
to breaching, flow in this side slough is provided by a small tributary
and groundwater seepage. Subsequent to breaching, flow is provided by
turbid water from the mainstem. Very 1 ittle backwater occurs at the
mouth of this side slough.
During the 1983 open water field season, stage was monitored at four
sites within this side slough. Streamflow was measured at one of these
sites (Figure 1-50).
3.3.9.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-17. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. Plots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-55 -1-A-56. Measurements of streamflow and corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A-8.
3.3.9.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Side Slough 22 (Appendix Table
1-A-8). From these measurements, a simple stage/streamflow rating curve
was developed (Figure 1-51). This curve only represents streamflows
during breached conditions. In addition, the streamflow data obtained
at this site were plotted against the corresponding mainstem discharge
at the time of measurement (Figure 1-52).
3.3.9.4 Mainstem Controlling and Breaching Discharges
Based on available streamflow and water surface elevation data and the
professional opinion of the project engineer, the hydraulic conditions
present in this side slough become governed by the mainstem at a
mainstem discharge of 23,000 cfs at Gold Creek. The lowest observed
mainstem discharge to breach Side Slough 22 was 20,000 cfs at Gold
Creek.
3.3.9.5 Backwater
Based on available stage and channel geometry data (see Chapter 2) and
field observations very little backwater occurs at the mouth of Side
Slough 22.
90
-
-
-
-
-
-_-'1
Ef)144.2
-oll(lf---StJSITNA RIVER
SLOUGH 22
ll STAFF GAGE
0
I
FEET
2!10
I
fApprn. ••••• I
Figure 1-50. Site map for Side Slough 22. which is located on the north bank of the Susitna River
at river m1le 144.2.
----1
Table 1-17. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Side Slough 22 at RM
144.2.
Gage
Site·
144.3H2 (Head)
144.3S6 (Q-Site)
144.3S4
144.3W3
Range of
Water Surface
Elevation (ft)
1.65
1.84
2.11
1.46
92
Corresponding
Mainstem Discharge (cfs)
21,700 -31,900
10,600 -28,200
10,600 -29,900
10,600 -28,200
-
....
-
-
-
-
-
'~
I
I
I
-
-I#) -(.) -
300
200
2
Side Slough 22
Gage 144.356
2
Figure 1-51.
-S.OSJO IO.l94S
_ ....... -----Q = 10 (WSEL-780)
r 2 = 0. 91
~ 4 s • 7 8 910 20 40 eo eo 100
WSEL-780
Stage versus flow rating curve for Side
Slough 22, staff gage 144.3S6.
93
200
5
-(/) -(.) -3:
0
...J
I..L,
::r:
(!)
:::::>
0
....1
(J)
IJ.I
Cl
(J)
Side Slough 2 2
Gage 144.356
_ ·e7.1411 ,te.eaoa
o,L-10 <a. ----......
r 2 = 0.84
2 3 4 5678910 20 40 eo ao 100
MAINSTEM DISCHARGE AT GOLD CREEK (xiOOO cfs)
Figure 1-52. Slough flow versus mainstem dischar~e rating curve for
Side Slough 22, staff gage 144.3S6.
94
-
-
-
-
-
r-
1
I
r
r
I
:!
r
i \1
-
3.4 Upland Sloughs
Measurements of stage and streamflow were obtained during the 1983 open
water field season at selected sites within two upland sloughs located
in the Talkeetna to Devil Canyon reach of the Susitna River. Results of
these investigations are discussed below by site.
3.4.1 Upland Slough 6A (RM 112.3)
3.4.1.1 Site Description
Upland Slough 6A (Figure 1-3) is located on the west bank of the Susitna
River at river mile 112.3. As in all upland sloughs, it has no
connection with the mainstem other than at the slough mouth. The
primary sources of flow for this slough originate from local runoff from
pondage caused by a beaver dam. A substantial area of backwater occurs
at the mouth of this upland slough during periods of low to high
mainstem flows.
During the 1983 open water field season, stage was monitored at two
locations within this upland slough. Streamflow was also measured at
one of these site (Figure 1-53).
3.4.1.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each monitoring station are presented in
Table 1-18. Measurements of water surface elevation and corresponding
mainstem discharge at Gold Creek obtained at each monitoring station are
presented in Appendix Table 1-A-7. Plots of water surface elevation
versus corresponding mainstem discharge at Gold Creek at time of
measurement for each monitoring site are presented in Appendix Figure
1-A-26.
Measurements of streamflow along with corresponding measurements of
water surface elevation and mainstem discharge at Gold Creek are pre-
sented in Appendix Table 1-A-8.
3.4.1.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site in Upland Slough 6A (Figure 1-53, Appendix Table 1-A-8). Because
of the influence of backwater at this site, a stage/streamflow rating
curve could not be constructed.
3.4.1.4 Backwater
A substantial area of backwater occurs at the mouth of this upland
slough during periods of low to high mainstem discharges. Based on
available stage and channel geometry data (see Chapter 2), an area of
backwater occurs at the mouth of this upland slough at a mainstem
discharge at Gold Creek as low as 7,230 cfs.
95
J J
ADF8G
Q STATION
112.3M2
112.3(D
.... t····· ..........
......
~··-• -:=:.:· •• ~
' ,: ,
.......-.--SUSITNA RIVER--
BEAVER DAM
SLOUGH 6A
fl. STAFF GAGE
0 2!50
FEET
(Approx. Scale)
Figure 1-53. Site map of Upland Slough 6A, which is located on the west bank of the Susitna
River at river mile 112.3.
I 1 I I ' J t I
-
-
-
Table 1-18. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Upland Slough 6A at RM
112.3.
Gage
Site
112. 3W1
112.3S3
Range of
Water Surface
Elevation (ft)
3.33
2.15
97
Corresponding
Mainstem Discharge (cfs)
7,230-32,000
10.,600-31,700
3.4.2 Upland Slough 19 (RM 140.0)
3.4.2.1 Site Description
Upland Slough 19 {Figure 1-3) is located on the east bank of the Susit.na
River at river mile 140.0. As in all upland sloughs, it has no con-
nection with the mainstem other than at it•s mouth. The primary sources
of flow originate from ground water seepage. A substantial area of
backwater occurs at the mouth of this slough during periods of low to
high mainstem flows.
During the 1983 open water field season, stage was monitored at three
locations within this upland slough. Streamflow was also measured at
one of these sites (Figure 1-54).
3.4.2.2 General Results
Ranges of water surface elevation and corresponding ranges of mainstem
discharge at Gold Creek for each stage monitoring station are presented
in Table 1-19. Measurements of water surface elevation along with
corresponding mainstem discharge at Gold Creek obtained at each stage
monitoring station are presented in Appendix Table 1-A-7. P1ots of
water surface elevation versus corresponding mainstem discharge at Gold
Creek for each stage monitoring station are presented in Appendix
Figures 1-A-47 1-A-48. Measurements of streamf1ow along with
corresponding measurements of water surface elevation and mainstem
discharge at Gold Creek are presented in Appendix Table 1-A-8.
3.4.2.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site in Upland Slough 19 (Figure 1-54, Appendix Table 1-A-8). Because
of the influence of backwater at this site, a stage/streamflow rating
curve was not be constructed.
3.4.2.4 Backwater
A substantial area of backwat.er occurs at the mouth of this upland
~laugh during periods of low to high mainstem flows. Based on available
stage and channel geometry data (see Chapter 2), an area of backwater
occurs at the mouth of Upland Slough 19 at a mainstem discharge at Gold
Creek as low as 10,000 cfs.
3.5 Tributaries
Simultaneous measurements of stage and streamflow were obtained within
selected tributaries within the Talkeetna to Devil Canyon reach of the
Susitna River. These results are presented below by tributary site.
98
-
-
-
-
""'
....
-
SLOUGH 19
6 STAFF GAGE
0 125
FEET
(Apprn. •••••)
) ) J
J • r,..
SUS,ITNA RIVER
G) 139.8
Figure 1-54. Site map of Upland Slough 19. which is located on the east bank of the Susitna River
at river mile 140.0.
Table 1-19. Range of water surface elevation and corresponding
mainstem discharge at Gold Creek (USGS 15292000) for each
stage monitoring station within Upland Slough 19 at Rr~
140.0.
Gage
Site
140.0W1
140.0S3
140.0S4
Range of
Water Surface
Elevation (ft)
3.74
3.17
2.21
100
Corresponding
Mainstem Discharge (cfs)
7,230-33,000
10,700 -30,000
10,700 -29,900
-
~.
"'"" '
-
,fl!fi[W:
....
-
. ~
-
.~
-
-
3.5.1 Whiskers Creek (RM 101.4)
3.5.1.1 Site Description
Whiskers Creek (Figure 1-3) is located on the west bank of the Susitna
River at river mile 101.4. It can be characterized as a relatively
narrow, meandering stream containing many pools and riffles. It joins
Whiskers Slough approximately 0.2 miles upstream of the slough•s
confluence with the mainstem Susitna River. During periods of high
mainstem discharges, an area of backwater occurs in the mouth of the
creek.
During the 1983 open water field season stage and streamflow were
measured at one location within this creek (Figure 1-55).
3.5.1.2 General Results
Measurements of water surface elevation and corresponding mainstem
discharge at Gold Creek obtained at the monitoring station in Whiskers
Creek are presented in Appendix Table 1-A-9. Measurements of streamflow
and corresponding measurements of water surface elevation and mainstem
discharge at Gold Creek at the time of measurement are presented in
Appendix Table 1-A-8.
3.5.1.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Whiskers Creek (Figure 1-55,
Appendix Table 1-A-8). These measurements were used to construct a
stage/streamflow rating curve (Figure 1-56).
3.5.2 Lane Creek (RM 113.6)
3.5.2.1 Site Description
Lane Creek (Figure 1-3) is located on the east bank of the Susitna River
at river mile 113.6. It can be characterized as a relatively narrow,
shallow, fast running, clear water stream containing many small pools
and riffles. · ·
During the 1983 open water field season, stage was monitored at two
locations within Lane Creek. Streamflow was a1so measured at one of the
1ocations (Figure 1-57).
3.5.2.2 Genera1 Resu1ts
Measurements of water surface elevation and corresponding mainstem
discharge at Gold Creek obtained at each monitoring site in Lane Creek
are presented in Appendix Table 1-A-9. Measurements of streamflow along
with corresponding measurements of water surface and mainstem discharge
at Gold Creek are presented in Appendix Tab1e 1-A-8.
101
J
• SUSITNA RIVER
WHISKERS 'CREEK
~ STAFF GAGE
0 250 , ___ _.
FEET
(.-,pproa. Beale)
Figure 1-55. Site map of Whiskers Creek, which is located on the west bank of the
Susitna River at river mile 101.4.
---
U) -() -3=
0
...J
LL
> a:: <t
1-
::::::> .... CD
a::
1-
Whiskers Creek
Gage 101.2T2
·8.6874 ' 9.9028 ~Q=IO (WSEL-360)
r2 =0.95 .
a 3 .. 5 8-7 8 9 10 20 40 60 80 100
WSEL-360 (feet)
Figure 1-56. Stage versus flow rating curve for Whiskers Creek,
staff gage 101.2T2.
103
,. ~~ ,.
\ ~: ;,
r. ' J ,. .. ;~ .:: .. X· . ..
RIVER
RAILROAD
I I I I I I I I I I I I • I ' I I I I 1 I I I I I I I I I I I I I I t-H--1-+-t-+-+-t-1-·1-·++++ -1·1 1-
LANE CREEK
6 STAFF GAGE
0
FEET
(Appro•. Soolo I
250
Figure 1-57. Site map of Lane Creek, which is located on the East Bank of the Susitna
River at river mile 113.6.
J
"""' I
-
3.5.2.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Lane Creek (Figure 1-57, Appen-
dix Table 1-A-8). These measurements were used to construct a simple
stage/streamflow rating curve (Figure 1-58).
3.5.3 Fourth of July Creek (RM 131.1)
3.5.3.1 Site Description
Fourth of July Creek (Figure 1-3) is located on the west bank of the
Susitna River at river mile 131.1. It is a relatively steep gradient,
narrow, shallow, fast-running clear water stream which overflows its
bank during periods of high streamflow.
During the 1983 open water field season, stage and streamflow were
monitored at one site within this creek (Figure 1-59).
3.5.3.2 General Results
Measurements of water surface elevation and corresponding mainstem
discharge at Gold Creek obtained at the monitoring station in Fourth of
July Creek is presented in Appendix Table 1-A-9. Measurements of
streamflow along with corresponding measurements of water surface
elevation and mainstem discharge at Gold Creek are presented in Appendix
Table 1-A-8.
3.5.3.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Fourth of July Creek (Figure
1-59, Appendix Table 1-A-8). These measurements were used to construct
a simple stage/streamflow rating curve (Figure 1-60).
3.5.4 Waterfall Creek (RM 140.1)
3.5.4.1 Site Description
Waterfall Creek (Figure 1-3) is a tributary to Slough 20 located on the
east bank of the Susitna River at river mile 140.1. It can be charac-
terized as a relatively small, steep gradient stream that has many small
pools and riffles.
During the 1983 open water field season, stage and streamflow were
measured at one site within this creek (Figure 1-61).
3.5.4.2 General Results
Measurements of water surface elevation and corresponding measurements
of mainstem discharge at Gold Creek are presented in Appendix Table
1-A-9. Measurements of streamflow along with corresponding measurements
of water surface elevation and mainstem discharge at Gold Creek are
presented in Appendix Table 1-A-8.
105
-en -(J -
Lane Creek
Gaqe li3.6T7
1.5 2 2.15 3
• •
5 6 7 8 9 10
WSEL-470 (feet)
IS 20 215
Figure 1-58. Stage versus flow rating curve for Lane Creek, staff
gage 113. 6T7.
106
-
-
-
-
-
-
-
-
-
4th of JULY CREEK
t:l STAFF GAGE
0 150
]
Figure 1-59. Site map of Fourth of July Creek, which is located on the west bank
of the Susitna River at river mile 131.1.
-en -u
4th of July Creek
Gage 131.1TI
1.5 z 2.11 a 4
•
Q = 109
.4-
121 (WSEL-620)111
"34111
r= o.s4 ·
II II 7 e 9 10 Ill 20 Ztl
WSEL-620 (feet)
Figure 1-60. Stage versus flow rating curve for Fourth
of July Creek staff gage 131.1T1.
108
-
~!
-
-
-
-
-
-
-
-
-
---1 ] ~--1 --1
' ... ~~ :.: ,;_--~ :i ., ·:.:,I~·-'. • \. -: .•: "'":'"
EB 140.1
.. ~ .... · .. ·. '.
WATERFALL CREEK
6. STAFF GAGE
0 250
FEET
(Appro•. Scolo)
j
. , -:1 ~-~-, ~ ·, ,• : ~·."! ·. ~-.-•
0
•' -., ~ I ·;~·~~' .•: • • •, •, • I •, ••• ••• , •: ~ , ., : -:~ :•: ',:,
0
•. ~ • ." ." i, •; ••: •.
-ot----SUS I TNA
.... ·.'·.~ · .. ....
Rl VER-
--~
""\ t!' •. :~ ....... ·---~ , .·:.-.;:.!::?::·'7. '.~-~ !.C"' .• ~·. o;,.,,.._,_..,..,...,,.,..,.....,.,7"<'~-.... · .. :. -:··~· .... ~.:-·:.·, ... ~;. · . ..: .. ·~ .... -
SMALL
TRIBUTARY
-1
Figure 1-61. Site map of Waterfall Creek, which is located on the east bank of the Susitna
River at river mile 140.1.
3.5.4.3 Stage/Discharge Relationship
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of Waterfall Creek. (Figure 1-61,
Appendix Table 1-A-8). Insufficient data were obtained to construct a
stage/streamflow rating curve.
3.5.5 Unnamed Tributary At Upper Slough 20 (RM 140.1)
3.5.5.1 Site Description
This unnamed stream (Figure 1-3) is a small tributary to Slough 20 which
is located on the east bank of the Susitna River at river mile 140.1.
It is a relatively narrow, meandering clear water stream and during
periods of moderate to high streamflow in Slough 20, an area of
backwater occurs at the mouth of this tributary.
During the 1983 open water field season, stage and streamflow were
measured at one site within this tributary (Figure 1-62).
3.5.5.2 General Results
Measurements of water surface elevation and corresponding mainstem
discharge at Gold Creek at the stage monitoring station are presented in
Appendix Table 1-A-9. Measurements of streamflow and corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek are presented in Appendix Table 1-A=8.
3.5.5.3 Stage/Discharge Relationships
Simultaneous measurements of stage and streamflow were obtained at one
site within the free-flowing portion of this tributary (Figure 1-61,
Appendix Table 1-A-8). These measurements were used to construct simple
stage/streamflow rating curve (Figure 1-63).
3.5.6 Gold Creek (RM 136.8)
3.5.6.1 Site Description
Gold Creek (Figure 1-3) is a medium sized tributary that joins with the
Susitna River on the east bank at river mile 136.8. It can be
characterized as a relatively steep gradient, fast running, clear water
stream having many pools and riffles.
During the 1983 open water field season, stage was monitored at two
sites within Gold Creek (Figure 1-64). One of the sites was monitored
with a staff gage and at the other site stage was monitored using a
continuous depth recorder and associated pressure transducer.
Streamflow was periodically measured at the 1 atter stage monitoring
station.
3.5.6.2 General Results
Measurements of stage (water surface elevation} obtained from staff gage
110
-
~.
"""
-
-
]
....... ....... .......
EB 14o.l
SLOUGH 20
Unnamed Tributary
6 STAFF GAGE
0 250
FEET
(Appro•. Scolo)
-~
------SUS I TNA Rl VER-
., .. .
· ..... :: ..
.., ·~' •. '.• .. :~· ·. ··~ • · .• ·,7.-.::;:-.. ~·. \..,.: !.": ·'··. -,..,_..__.,.,...,,.,,.,.,..~..,.,.~--
.:. :. : • :-~~,. .. 1 ~~ .:· •••• • .... : i, .. ..: ... • :· .... •
SMALL
TRIBUTARY
1
.,,',:
:~-·~~-i~'<~-'. ~=·.-~
~ ..
../. ,.
ADF &G ··~-~ ..
Q STATION·'.:.,
Figure 1-62. Site map of Slough 20 unnamed tributary, which is located on the east bank of
the Susitna River at river mile 140.1.
(/) -0 -3:
0
_J
IJ..
>-a:: 2 <r:
1-
~
CD
a::
1-
.3
.2
.I
Tributary in Upper Slough 20
Gage 140.1 T3
I.ISI 7 L7V67
f.----Q = 10 (WSEL-730)
r 2 = 0.99
•
.2 .3 .4 .II .8 .7 .8 .9 I 2 3 4 5 6 1 8 v 10
WS EL-730 (feet)
I
Figure 1-63. Stage versus flow rating curve for tributary in Upper
Slough 20, staff gage 140.1T3.
112
-
-
~~
-
] J
GOLD CREEK
[). STAFF GAGE
0 250 ....__=-_J
FEET
( Approx. Seal•»
Figure 1-64. Site map of Gold Creek, which is located on the east bank of the Susitna River at
river mile 136.7.
observations and corresponding mainstem discharge obtained at each stage
monitoring station within Gold Creek are presented in Appendix Table
1-A-9. Measurements of streamflow and corresponding measurements of
water surface elevation and mainstem discharge at Gold Creek are
presented in Appendix Table 1-A-8. Measurements of streamflow and the
corresponding measurement of water depth obtained at the pressure
transducer are presented in Table 1-20.
3.5.6.3 Stage/Discharge Relationship
Simultaneous measurements of water depth and streamflow were obtained at
the site of the cont·inuous stage recorder within Gold Creek. These
measurements were used to construct a simple rating curve (Figure 1-65).
The least squares regression equation for these depth of water and
streamflow measurements was used to determine hourly streamflow data
from the continuous water depth readings. Mean daily streamflow was
then determined from these hourly streamflow records and are presented
in Appendix Table 1-A-10.
3.5.7 Indian River (RM 138.6)
3.5.7.1 Site Description
Indian River (Figure 1-3) is a relatively large tributary which joins
with the Susitna River on the west bank at river mile 138.6. It can be
characterized as a relatively large, fast running, clear water, stream
consisting of many pools and riffles.
During the 1983 open water field season, stage was monitored at one
site within Indian River using both a continuous depth recorder and
associated pressure transducer and staff gages. In addition, streamflow
was periodically measured. (Figure 1-66).
3.5.7.2 General Results
Measurements of water surface elevation obtained from staff gage obser-
vations and corresponding mainstem discharge at Gold Creek obtained at
the monitoring station within Indian River are presented in Appendix
Table 1-A-9. Measurements of streamflow along with corresponding
measurements of water surface elevation and mainstem discharge at Gold
Creek at the time of measurement are presented in Appendix Table 1-A-8.
Measufements of streamflow along with the corresponding measurement of
water depth obtained at the pressure transducer are presented in Table
1-21.
3.5.7.3 Stage/Discharge Relationship
Simultaneous measurements of water depth and streamflow were obtai ned
within Indian River at the site of the continuous stage recorder. These
measurements were used to construct a simple rating curve (Figure 1-67).
The least squares regression equation for these depth of water and
streamflow measurements was used to ca 1 cul a ted hourly streamflow data
from the continuous water depth readings. Mean daily streamflow was
then determined from the hourly streamflow record and is presented in
114
~-
-
-
-
-
-
-
,_
Table 1-20. Streamflow (cfs) and water depth measurements obtained at
the Gold Creek tributary continuous stage recorder for
1983.
Water
Depth Streamflow
Date Time (ft) (cfs}
830806 1600 0. 77 34
830827 1700 0.87 51
830629 1500 0.87 56
830808 1800 1.53 154
115
-(J) -(,) -
3:
0
....1 u..
>-a::
<(
1-
~
CD
a::
1-30
2.!5
2
1.5
0.1
Gold Creek
Data pod
Q = ld·•••l { Depth}a_.o_eT_I ____ J
r-2:.0.97
0.11 0:1 0.11 0.1 0.4 o.e o.e 0.1 o.ao.• 1.0
DEPTH OF WATER (feet)
1.8 2.0 2.1 1.0 4.0
Figure 1-65. Depth of Water (feet) versus tributary f1ow
rating curve for Gold Creek continuous stage
recorder.
116
-
-
-
-
-
-
-
-
-
-
l ]
INDIAN RIVER
6 STAFF GAGE
0 1000
FEET
Figure 1-66. Site map of Indian River, which is located on the west bank of the
Susitna River at river mile 138.6.
Table 1-21. Streamflow (cfs) and water depth measurements obtained at
the Indian River tributary continuous stage recorder for
1983.
Water
Depth Streamflow
Date Time ~ft} {cfs)
830705 1200 1.50 459
830827 1200 1.50 338
830913 0900 1.40 242
830712 1600 1.30 173
830728 1830 1.20 98
118
-
-
-
~~
-
-
-
-
.....
I
I
I
-
!""'
r
:
Ill -u -~
0 ..J
LL.
>-a:: < 1-
:::::1
CD
a::
1-
0.1
Indian River
Data pod
0.15 0.2 025 0.3 0.4 o.e o.e 0.7 0.1 o.a 1.0 1.5 lt.O 2.5 3.0
DEPTH OF WATER (feet)
Figure 1-67. Depth of water (feet) versus tributary flow
rating curve for Indian River, continuous
stage recorder.
119
<1.0 5.0 s.o
Appendix Table 1-A-11. A comparison of the measured streamflows to that
estimated from the depth of water records indicate the streamflow record
may be in error at higher streamflows (greater than 350 cfs). This has
been attributed to streambed movement in the area of the monitoring
station.
3.5.8 Portage Creek (RM 148.8)
3.5.8.1 Site Description
Portage Creek (Figure 1-3) is a relatively large, fast running, clear
water stream that has many pools and riffles. It joins with the north
-
-
bank of the Susitna River at river mile 148.8. -
During the 1983 open water field season, stage was monitored at one site
within Portage Creek using a continuous stage recorder and a staff gage.
In addition, streamflow was periodically measured at this site (Figure
1-68).
3.5.8.2 General Results
Measurements of streamflow along with the corresponding measurement of
water surface elevation and mainstem discharge at Gold Creek are
presented in Appendix Table 1-A-8. Measurement of streamflow and
corresponding measurement of water depth obtained at the pressure
transducer are presented in Table 1-22.
3.5.8.3 Stage/Discharge Relationship
Simultaneous measurements of water depth and streamflow were obtained at
the site of the continuous stage recorder within Portage Creek. These
measurements were used to construct a simple rating curve (Figure 1-69).
The least squares regression equation for these depth of water and
streamflow measurements was used to calculate hourly streamflow in
Portage Creek from the continuous water depth readings. Mean daily
streamflow calculated from the hourly streamflow record are presented in
Appendix Table 1-A-12.
120
-
-
....
-
1--'
N
1--'
J 1 ] ] -I l
PORTAGE CREEK
t:l STAFF GAGE
0 250
FEET
(Appro1. loolt)
Figure 1-68. Site map of Portage·creek which is located on the west bank of the Susitna
River at river mile 148.8.
Table 1-22. Streamflow {cfs) and water depth measurements obtained at
the Portage Creek tributary continuous stage recorder for
1983.
Water
Depth Streamflow
Date Time (ft) (cfs}
830702 1200 1.83 1055
830828 1200 1. 70 789
830730 1100 0.87 267
122
-
-
-
-
-
-
-
~
'
-
4000
F' (I) -(,) -3:
0
!""' ..J
lL
>-700 a:
<t 600
1-
:::) 500 CD
a:
1-400 -
300
250
200
I !SO
0.1
-
-
Por1age Creek
Data pod
0 = 10z.a.,oo(Dep1h)l:7ala
r~ o.sa· .
0.18 o.z o.za o.lt o.4 o.a o.a 0.1 o.a o.a 1.0
DEPTH OF WATER (feet)
1.5 2.0 2.5 3.0 4.0 5.0
Figure 1-69. Depth of water (feet) versus tributary flow
for Portage Creek, continuous stage recorder.
123
4.0 DISCUSSION
Stage and discharge data were collected during the 1983 open water field
season to determine the influences that mainstem discharge has on the
water surface elevation of the mainstem at selected locations and to
evaluate the influences that mainstem discharge has on various hydraulic
conditions present in peripheral habitats.
Streamflows recorded during both the 1982 and 1983 open water field
seasons generally followed the historical 25 year streamflow record. In
contrast, the streamflows experienced during the 1981 open water field
season were higher than the historical 25 year streamflow record during
the July to August period.
During the 1983 open water field season (May-October), mainstem dis-
charge ranged from a low of 7,500 cfs on October 9 to a high of 36,000
cfs at Gold Creek on June 5. Generally, discharge increased during May,
peaked in June, and decreased during September and October (Figure 1-5).
Based on 1982 (ADF&G, 1983) and 1983 data, the relationship between
mainstem water surface elevation and mainstem discharge is relatively
well defined for mainstem discharges at Gold Creek ranging from 7,500 to
35,000 cfs.
Mainstem discharge was found to influence various hydraulic conditions
present within side channel, side slough, and upland slough habitats.
Moderate to high levels of mainstem discharge caused backwater areas to
form at the mouths of many of the side channels, side sloughs, and
upland sloughs that were evaluated. The size and extent of these
backwater areas increased as mainstem discharge increased.
Mainstem discharge was also found to influence, to varying degrees, the
water surface elevation and streamflow conditions that occur within side
channels and side sloughs, particularly when the head portions of these
sites were breached by the mainstem. Prior to breaching (overtopping),
the streamflow conditions present within these habitats are only
indirectly related to mainstem discharge. Under these conditions,
streamflows are small and water surface elevations remain relatively
stable. Streamflow prior to· breaching, is contributed by' groundwater
upwelling or seepage, surface water runoff, and tributary inflow.
With the occurrence of breaching of a side channel or side slough by
progressively higher levels of mainstem discharge, a succession of
events occurs within these habitats. The first event that occurs is the
initial overtopping of the head portion of these habitats. The mainstem
discharge at which this initial overtopping occurs is referred to as the
.. breaching discharge ... This initial breaching may or may not
significantly influence the hydraulic characteristics of a side channel
or side slough due to the low quantity of flow entering the head portion
and due to specific geomorphological features of a site. At some point,
as progressively higher levels of mainstem discharge overtop the head
portion of a side channel or side slough, the hydraulic characteristics
of a site begin to become governed by mainstem discharge. The mainstem
discharge at which this initially occurs is referred to as the
124
-
-
....
-
-
-
-controlling breaching discharge. The period between the initial
breaching discharge and the controlling breaching discharge is referred
to as the "intermediate breaching discharge" condition. Depending upon
the geomorphological character of the heads of side channels and side
slough the controlling mainstem breaching discharge and the breaching
discharge may be very close if not the same mainstem discharge.
In general, initial breaching discharges for side channels are lower
than those for side sloughs. Initial mainstem breaching discharges for
the side channels selected for study in the middle reach of the Susitna
River vary from 5,000 to 20,000 cfs as measured at the USGS Gold Creek
gaging station. These compare to mainstem breaching discharges for
studied side sloughs in the middle reach of the Susitna River which vary
from 16,000 to 42,000 cfs as measured at the USGS Gold Creek gaging
station (Table 1-23).
These breaching discharges compare to controlling breaching discharges
which range from 5,000 to 25,000 cfs and 19,000 to 42,000 cfs (Table
1-23) as measured at the USGS Gold Creek gaging station for side chan-
nels and side sloughs, respectively. The controlling breaching dis-
charges are closer to the breaching discharges in side channels than in
side sloughs. Side channels are generally of a lower elevation at their
head portions than side sloughs and the head portion of a side channel
is usually much broader allowing a larger quantity of water to flow over
the head at the initial point of overtopping. This causes a more
immediate influence of mainstem discharge on the hydraulic
characteristics of a side channel. With the occurrence of controlling
breaching discharges, both the water surface elevation and streamflow
within side channel and side slough habitats increases dramatically.
The initial breaching and controlling breaching discharges presented in
Table 1-23, are based on a combined interpretation of survey and water
surface elevation data, aerial photography, field observations, and the
professional judgement of our hydraulic engineering consultant. Table
1-23 represents our best estimate of breaching and cantrall ing dis-
charges for the studied sites. The discharge estimates are based on
mean daily mainstem discharge as measured at the USGS Gold Creek gaging
station rather than site specific mainstem discharge measurements.
Because of this, an error of ± 15% may be associated with the estimates.
Simultaneous measurements of stage and streamflow obtained within the
free-flowing portion of each side channel or side slough were plotted as
simple rating curves. These curves describe the relationship between
water surface elevation within each site to streamflow at the site.
Because of the influence of mainstem discharge on the hydraulics at the
gaging station, many of the plots depict both the breached and non-
breached conditions.
Stage and streamflow measurements were also obtained in two upland
s 1 oughs 1 oca ted in the Ta 1 keetna to De vi 1 Canyon reach of the Sus itna
River. Because of the influence of backwater at these habitats, rating
curves describing the relationship of site streamflow to water surface
elevation could not be constructed.
125
Table 1-23. Initial breaching and controlling mainstem discharges for
selected side channels and side sloughs in the Talkeetna to
Devil Canyon reach of the Susitna River, 1983.
2
Initial 1 Con troll-
ing
Breaching Mainstem
Discharge Discharge
Site RM (cfs) (cfs}
Side Channels
Mainstem 2 Side Channel
NW Channel 114.4 12,000 16,000
NE Channel 115.5 23,000 25,000
Side Channel 10 134.2 19,000 19,000
Lower Side Channel 11 135.0 5,000 5,000
Upper Side Channel 11 136.2 13 ,000 16,000
Side Channel 21
Downstream of A5 140.6 9,2003 12,000
Upstream of A5 141.9 18,000 24,000
Side Sloughs
Whiskers Side Slough 101.2 22,000 23,000
Side Slough 8 113.6 24,000 24,000
Side Slough 8A
NW Channel 126.2 27,000 27,000
NE Channel 126.7 33,000 33,000
Side Slough 9 128.3 16,000 19,000
Side Slough 11 136.4 42 ,000· 42,000
Side Slough 168 138.2 20,000 23,000
Side Slough 20 4 140.6 22,000 23,000
Side Slough 21
NW Channel 142.2 23,000 25,0005
NE Channel 142.3 26,000
Side Slough 22 144.7 20,000 23,000
1 The initial breaching discharges presented in this table represent the
lowest mainstem discharge occurring when the head portions of these
side channel and slough habitats were observed to be breached.
2 Controlling mainstem discharge values were determined by the project
hydraulic engineer using available hydraulic data.
3 Small overflow channel A6 (Figure 1-20) is initially breached
contributing minimal flow to Side Channel 21.
4 The northwest channel of Slough 21 initially governs the hydraulic
characteristics for the main channel of the slough.
5 Data not available to determine the controlling mainstem discharge for
Slough 21 NE channel.
126
-
~
-
-
.~
.,
-
-
-
-
-
-
Significant areas of backwater occurred at the mouth of each of the
upland sloughs during periods of low to high mainstem discharge. These
backwater areas are characterized by increased water depth and reduction
in water velocities.
Because upland sloughs are not hydraulically connected with the mainstem
at their heads, the streamflow in these sites was not found to be
directly related to mainstem discharge. The major contributors to
streamflow in the upland sloughs included surface water runoff and
groundwater upwelling.
Stage and streamflow measurements were obtained at eight tributaries
located in the Talkeetna to Devil Canyon reach of the Susitna River.
From these data, rating curves describing the relationship between
tributary streamflow and water surface elevation were constructed.
Three of the tributaries studied contributed flow to side slough habi-
tats (Whiskers Creek, Waterfall Creek and a small tributary near the
head of Side Slough 20). Fourth of July Creek emptied into an adjoining
side channel. The remaining tributaries evaluated emptied directly into
the mainstem Susitna River. Tributary inflow was found to provide a
significant contribution of flow to side slough habitats when the
sloughs were not breached by mainstem discharge. Whiskers Creek was
found to contribute as much as 90% of the flow to Whiskers Side Slough
during unbreached periods. Similarly Waterfall Creek provided as much
as 80% of the total discharge in Side Slough 20 under nonbreached
hydraulic conditions.
All of the tributaries studied provided clear water plumes where they
joined with sloughs, side channel or mainstem habitats. The extent of
these clear water plumes were found to vary, depending on both the
volume of flow of the tributary and the flow associated with the habitat
into which they emptied.
Continuous measurements of streamflow were estimated for Gal d Creek,
Indian River, and Portage Creek for the months of May to October, 1983.
The estimates were determined from continuous depth of water
measurements and indicate the general magnitude and variability of
stream f1ows for these tributaries. At Indian River, the streamf1ow
record may be in error in the range of 20% for those f1ows exceeding 300
(cfs) due to streambed movement found to occur at the discharge station.
Overall, the three tributaries exhibit simi 1 ar trends with streamflow
generally increasing during 1ate May and ear1y June, presumab1y due to
snow me1t, and decreasing in October. Peak f1ows occurred in August and
September for each of these tributaries and are assumed to be the resu1t
of precipitation. Stream flow for Gold Creek, Indian River, and Portage
Creek on August 9, 1983 (a period of high f1ow) was 200 (cfs) 2,647
{cfs) and 2,045 {cfs) {Appendix Tables 1-A-10 -1-A-12), respectively.
The tota1 of these three tributaries provided approximate1y 16% of the
mainstem discharge at Gold Creek (USGS 15292000) of 29,900 cfs occurring
for the same day.
Stage and streamflow rating curves have been developed for each tribu-
tary studied in the Ta1keetna to Devil Canyon reach of the Susitna River
127
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with the exception of Waterfall Creek. From rating curvest continuous
streamflow records have been estimated for Gold Creek, Indian River and
Portage Creek. Although stage and discharge measurements have been
obtained providing streamflow data for various fishery and hydrological
studies, use of these rating curves should be limited to the 1983 open
water season. Streambed movement which is common among several of these
tributaries may alter the stage and streamflow relationship presently
identified.
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5.0 CONTRIBUTORS
PROJECT LEADER
Aquatic Habitat and Instream Flow
Project Leader
PRIMARY AUTHORS
REPORT COORDINATORS
EDITORS
DATA PROCESSING
DATA COLLECTION
DRAFTING
TYPING
129
Christopher Estes
Tim Quane
Pat Morrow
Tommy Withrow
Douglas Vincent-Lang
Tim Quane
Christopher Estes
Christopher Estes
Douglas Vincent-Lang
Allen Bingham
Alice Freeman
Donna Bucholz
Katrin Zosel
Camille Stephens
Pat Morrow
Torrmy Withrow
Isaac Queral
Jody Miller
Chris Kent
Sa 11 y Donovan
Skeers Word Processing
6.0 ACKNOWLEDGEMENTS
The authors wish to thank E.W. Trihey & Associates for providing their
assistance with the study design and the data reduction process associ-
ated with this report. Funding for this study was provided by the State
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of Alaska, Alaska Power Authority. ~
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7.0 LITERATURE CITED
Alaska Department of Fish and Game (ADF&G). 1981a Aquatic studies
procedures manu a 1. Phase I. Prepared for Acres American, Inc.
Anchorage, Alaska.
• 1983a. Aquatic studies procedures manual. Phase II. Prepared
--for Acres American, Inc. Anchorage, Alaska.
. 1984. Su Hydro Aquatic Studies (May 1983-June 1984) Procedures
--·Manual. Final Draft. Prepared for Alaska Power Authority
Anchorage, Alaska.
• 1982a. Susitna Hydro Aquatic Studies, Phase II, Basic data
report; Volume 4: Aquatic Habitat and Instream Flow Studies, Part
I and II. Anchorage, Alaska.
• 1983b. Aquatic Habitat and Instream Flow Studies, 1982.
Volume 4 of Phase II Basic Data Report. Alaska Department of Fish
and Game/Susitna Hydro Aquatic Studies Program. Anchorage, Alaska.
R&M Consultants, Inc. 1982.
graphic Surveys Report.
Anchorage, Alaska.
Susi tna Hydroelectric Project:
Prepared for Acres American,
Hydro-
Inc. ,
U.S. Geological Survey {USGS). 1978. Water Resources Data for Alaska:
Water Year 1977. USGS Water Data Report AK-77-1. Anchorage,
Alaska •
. 1981. Water Resources Data for Alaska: Water Year 1980. USGS
---.Water Data Report AK-80-1. Anchorage, Alaska •
• 1982a. Water Resources Data for Alaska: Water Year 1981. USGS
---~water Data Report AK-8K-1. Anchorage, Alaska .
• 1983b. Water Provisional Summary of 1983 Water Resources Data
for Alaska
131
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8.0 GLOSSARY
Backwater Area - A reach of stream with reduced or no velocity and a
rise in stage resulting from a hydraulic or physical barrier.
Backwater areas in habitats adjacent to the Susitna River usually
are due to an increase in mainstem discharge and occur at the mouth
of or within a side channel or slough.
Berm -The leqge or shelf at the head of a side slough or side channel
that separates the side slough or side channel from the mainstem
Susitna River or other side channels.
Breaching -The overtopping of the head of a side channel or side slough
by the mainstem river.
Clearwater Plume -the extension of the clearwater of a tributary into
the turbid mainstem at and below the confluence of the two. Due to
the different densities of the mainstem and tributary waters, these
two water bodies do not readily mix, causing a clearly defined
clearwater extension of the tributary along the river bank at end
below the actual confluence. The size of the plume is a function
of tributary flow and mainstem discharge.
Controlling Discharge -The mainstem discharges at Gold Creek required
to breach the upstream berm govern the hydraulic characteristics
within a side slough or side"channel.
Cross Section Profile - A survey of the vertical section of a channel
bottom taken at right angles to a survey line resulting in a
ground/streambed profile.
Datapod - A dual channel, electronic instrument capable of simul-
taneously measuring and recording from each channel on a continuous
basis. Datapods have been used to monitor stage, temperature and
dissolved gas concentrations.
Discharge -Discharge, or streamflow, is defined as the volume rate of
flow of water passing a specific location at a specific period in
time. Dimensions are usually expressed as cubic feet per second
(cfs). For the purpose of this report 11 discharge 11 will refer
specifically to mainstem flow and 11 streamflow 11 will refer to flow
in side channels, sloughs and tributaries habitats.
DSM - A non-volatile, ultraviolet (UV) erasable, solid state data
storage module capable of storing approximately 3 months of stage,
temperature or dissolved gas concentration data.
Flow-The movement of a volume of water from place to place. See
Discharge and Streamflow.
Gaging Station -A location which has·been established for monitoring
stage, flow and/or discharge.
Gradient -Rate of change in vertical elevation per unit horizontal
distance.
132
Habitat -The surrounding environmental conditions to which a particular
species and life stage of fish responds both behaviorally and
physiologically.
Head -The upstream or point of origin of a lotic water body.
Initial Breaching Discharge -The mainstem discharge at Gold Creek which
represents the initial point when mainstem water begins to enter
the upstream head (berm) of a side slough or channel.
Intermediate Breaching Discharge -The range of mainstem discharges at
Gold Creek representative of the conditions between the Initial and
Controlling Discharges. This range occurs from immediately after
mainstem surface water begins to overtop the upstream head (berm)
of a side slough or side channel up to the point when the mainstem
discharge begins to govern the hydraulic characteristics of the
site.
Lower Reach (of the Susitna River) -The segment of the Susitna River
between Cook Inlet and the Chulitna River confluence. (See also
middle reach and upper reach).
Mainstem Habitat -Consists of those portions of the Susitna River that
normally convey water throughout the year. Both single and multi-
ple channel reaches are included in this habitat category. Ground-
water and tributary inflow appear to be inconsequential contribu-
tors to the overall characteristics of mainstem habitat. Mainstem
habitat is typically characterized by high water velocities and
well armored streambeds. Substrates generally consist of boulder
and cobble size materials with interstitial spaces filled with a
grout-like mixture of small gravels and glacial sands. Suspended
sediment concentrations and turbidity are high during summer due to
the influence of glacial melt-water. Discharges recede in early
fall and the mainstem clears appreciably in October. An ice cover
forms on the river in late November or December.
Mean Daily Discharge -The computed mean mainstem discharge per 24 hour
period for a USGS gaging station.
Middle Reach (of the Susitna River) -The segment of the Susitna River
between the Chu 1 itna River confluence and De vi 1 Canyon. (See a 1 so
lower reach and upper reach).
Monitoring Station-A station set up for the collection of a particular
data base.
Mouth -The downstream confluence of a lotic water body with another
water body.
Observed Data -Values derived through a visual estimate or
evaluation.
Overflow Channel -Those channels which connect the mainstem river with
side channel and side slough habitats and are located downstream of
133
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the head portions of these habitats. Overflow channels
periodically breach providing mainstem water into side channel and
side slough habitats.
Overtopping -See breaching.
Peripheral Habitats -Aquatic habitats adjacent to the mainstem Susitna
River habitat (e.g. side channel, side slough, upland slough,
tributary mouth and/or tributary habitats).
Project Datum-The project elevations referenced to mean sea level.
Rating Curve - A curve representing a simple relation. between two
variables to be used to determine values of the dependent variable
as a function of the independent variable. The rating curves
developed using project measurements of stage and discharge consist
of discharge rating curves and stage rating curves. The discharge
rating curves are used to determine streamflow as a function of
mainstem discharge and streamflow as a function of water surface
elevation. The stage rating curves are used to determine stage
referred to as water surface elevation as a function of mainstem
discharge.
Side Channel Habitat -Consists of those portions of the Susitna River
that normally convey water during the open water season but become
appreciably dewatered during periods of low mainstem discharge.
Side channel habitat may exist either in well defined overflow
channels, or in poorly defined water courses flowing through
partially submerged gravel bars and islands along the margins of
the mainstem river. Side channel streambed elevations are typical-
ly 1 ower than the mean monthly water surface elevations of the
mainstem Susitna River observed during June, July, and August.
Side channel habitats are characterized by shallower depths, lower
velocities and smaller streambed materials than the adjacent
habitat of the mainstem river.
S 'ide Slough Habitat -Those channe 1 s 1 oca ted between the edge of the
floodplain and the mainstem and side channels of the Susitna River.
It is usually separated from the mainstem and/or side channels by
well vegetated bars. An exposed alluvial berm often separates the
head of the slough from mainstem discharge or side channel flows.
The controlling streambed/bank elevations at the upstream end of
the side sloughs are slightly less than the water surface
elevations of the mean monthly discharges of the mainstem Susitna
River observed for June, July, and August. At intermediate and
low-discharge periods, the side sloughs convey clear water from
small tributaries and/or upwelling groundwater. These clear water
inflows are essential contributors to the existence of this habitat
type. The water surface elevation of the Susitna River generally
causes a backwater to extend well up into the slough from its lower
end. Even though this substantial backwater exists, the sloughs
function hydraulically very much like small stream systems and
several hundred feet of the slough channel often conveys water
independent of mainstem backwater effects: At high discharges the
water surface elevations of the mainstem river is sufficient to
134
overtop the upper end of the slough. Surface water temperatures in
the side sloughs during summer months are principally a function of
air temperature, solar radiation, and the temperature of the local
runoff.
Staff Gage - A non-recording staff, marked in graduations of hundredths
of feet, used to monitor stage through observation.
Stage -The height of the water surface above an established datum
plane. Stage can be converted to true water surface elevation if
the observations are converted into project datum.
Streamflow-Same as discharge but refers specifically to side channel,
slough and tributary flow whereas discharge denotes in the
mainstem. See Discharge.
Suitability Criteria Curve-A preference curve, modified by additional
information, e.g. observations, professional judgment, field and
literature data, etc., to represent the suitability of habitat for
a particular species and lifestage over the range of habitat
components expected to be encountered. This is the curve used to
calculate weighted usable area (also suitability index curve and
weighted habitat criteria). The x and y axes are established in
the same manner as the utilization curves.
Suitability Curve -See suitability criteria curve.
Suitability Index -The label for they-axis indicating standardization
to the 0 - 1 scale for a suitability curve. Can also be used to
indicate a value determined from a suitability curve.
Synthetic Data -Estimated data sets based on professional judgment used
in the hydraulic modeling calibration process to fill in data gaps.
Thalweg Profile - A longitudinal profile that describes the streambed
elevation of the deepest portion of mainstem, tributary, slough or
other riverine habitats.
Thermal Infrared Imagery -the process by which thermal images are
obtained through the use of thermal infrared sensors
(imagers); the tone of the image or picture is directly
related to the infrared radiation emitted from the object
imaged.
Tributary Habitat -Consists of the full complement of environmental
conditions that occur in the tributaries. Their season a 1 flow,
sediment, and thermal regimes reflect the integration of the
hydrology, geology, and climate of the tributary drainage. The
physical attributes of tributary habitat are not dependent on
mainstem conditions~
Tributary Mouth Habitat -Extends from the uppermost point in the
tributary influenced by mainstem Susitna River or slough backwater
effects to the downstream extent of the tributary plume which
extends into the mainstem Susitna River or slough.
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Turbid -The condition of water quality at a site when water clarity is
decreased by inorganic and/or organic suspended materials.
urn - a millionth of a meter.
Upland Slough Habitat -Differs from side slough habitat in that the
upstream end of the slough does not interconnect with the surface
waters of the mainstem Susitna River or its side channels even at
high mainstem discharges. These sloughs are characterized by the
presence of beaver dams and an accumulation of silt covering the
substrate resulting from the absence of mainstem scouring dis-
charges.
Upper Reach (of the Susitna River) -The segment of the Susitna River
between Devil Canyon and the headwaters (See also lower reach and
middle reach).
USGS Water Year -The USGS water year runs from October to September and
the years designation is determined by the end of the period. The
1983 water year occurs from October 1 of 1982 to September 30 of
1983.
Water Surface Profile (WSP) Model -See IFG-2 Model.
WSEL -Abbreviation for water surface elevation.
136
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9.0 APPENDIX 1-A
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LIST OF APPENDIX TABLES
1-A-1
1-A-2
1-A-3
1-A-4
1-A-5
1-A-6
1-A-7
1..:.A-8
Mainstem Susitna River mean daily discharge at
Cantwell Station ..•..•.•..•.•.••••.•••.•••••••...••••
Mainstem Susitna River mean daily discharge at
Gold Creek Station ................................... .
Mainstem Susitna River mean daily discharge at
Sunshine Station ..••.••••.•.•••••.••.•••••.•..••...•.
Mainstem Yentna River mean daily discharge near
Susitna Station ..•••••••.•.•••.••••••••••.•.•••.•.•..
Mainstem Susitna River mean daily discharge at
Susitna Station ••••..••.•.••••.••••.•.•••••..•.•.••..
Comparison of mainstem water surface elevations
to mean daily mainstem discharge (cfs) obtained
at the USGS gaging station at Gold Creek
( 15292000) .......................................... .
Comparison of non-mainstem water surface
elevation to mean daily mainstem discharge (cfs)
obtained at the USGS gaging station at Gold
Creek (15292000) ..•••.•.•.•••••.•.••••••••.•••.•••.•.
Comparison of water surface elevation (WSEL) and
flow measurements at selected side channel,
slough and tributary study sites in the
Talkeetna to Devil Canyon reach to the mean
daily Susitna River discharge recorded at Gold
Creek ( 15292000) ..................................... .
1-A-1
1-A-2
1-A-3
1-A-4
1-A-5
1-A-6
1-A-55
1-A.:.129
1-A-9 Comparison of tributary water surface elevations
to mean daily mainstem discharge (cfs) obtained
at the USGS gaging station at Gold Creek
(15292000) ........................................... 1-A-137
1-A-10 Daily mean streamflow record for Gold Creek,
Alaska 1983.......................................... 1-A-143
1-A-11 Daily mean streamflow record for Indian River,
Alaska 1983.......................................... 1-A-149
1-A-12 Daily mean streamflow record for Portage Creek,
Alaska 1983.......................................... 1-A-155
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LIST OF APPENDIX FIGURES
1-A-1 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Whiskers Slough head and mouth....................... 1-A-161
1-A-2 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Talkeetna Fishwheel Station and left bank at
LRX9................................................. 1-A-162
1-A-3
1-A-4
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
right bank at LRX lOB and right bank at LRX
lOC •••..•••••.•••••••.•••••••••••••.••••••••.••.•••••
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
1-A-163
right bank at LRX 11 and left bank at LRX 12........ 1-A-ln4.
1-A-5 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Upland Slough 6A mouth and left bank at LRX
16................................................... 1-A-165
1-A-6
1-A-7
1-A-8
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
right bank at LRX 18 and mainstem below Lane
Creek mouth •.•••••••.••...••..••••.••••••••••.••••..•
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
Lane Creek mouth and above Lane Creek mouth •••••••
Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
above Mains tern 2 Side Channe 1 mouth and above
Mainstem 2 Side Channel NW head ••••••••••••••••••••••
1-A-9 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation
above Mains tern 2 Side Channe 1 NE head and the
right bank at LRX 24 •••••••••••••••••••••••••••••••••
1-A-10 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 28 and at Side Slough
SA mouth ...•....••....•..•.•..•.••••••..•••.....•••..
i i
1-A-166
1-A.;.167
1-A-168
1-A-169
1-A-170
LIST OF APPENDIX FIGURES (Cont.)
1-A-11 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 24 and above Slough 8A
NE head •.•.•• c•••••••••••••••••••••••••••••••••••••••
1-A-12 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 31 and at the right bank
1-A-171
at LRX 32............................................ 1-A-172
1-A-13 r~ainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 33 and at the right bank at
LRX 34............................................... 1-A-173
1-A-14 Mainstem discharge {Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 35 and be 1 ow the mouth of
Fourth of July Creek................................. 1-A-174
1-A-15 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
left bank at LRX 37 and at Side Channel 10 mouth..... 1-A-175
1-A-16 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
left bank at LRX 40 and at Side Slough 168 mouth..... 1-A-176
1-A-17 Mainstem discharge (Provisional USGS 1983)
versus ma·instem water surface elevation at the
mainstem at the head of Side Slough 16B and the
right bank at LRX 49................................. 1-A-177
1-A-18 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
left bank at LRX 50 and the left bank at LRX 51...... 1-A-178
1-A-19 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at the
Upland Slough 19 mouth and the right bank at
LRX 53............................................... 1-A-179
1-A-20 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at Side
Channel 21 mouth and the right bank at LRX 58........ 1-A-180
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LIST OF APPENDIX FIGURES (Cont.)
1-A-21 Mainstem discharge {Provisional USGS 1983)
versus mainstem water surface elevation at the
right bank at LRX 55 and the right bank at
LRX 56............................................... 1-A-181
1-A-22 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the right bank at LRX 57 and at the mainstem at
Side Slough NW head.................................. 1-A-182
1-A-23 Mainstem discharge (Provisional USGS 1983)
versus mainstem water surface elevation at
the left bank at LRX 61 and at the left bank at
LRX 62............................................... 1-A-183
1-A-24 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Whiskers
Slough mouth and discharge site ••••••••••.•••...••...
1-A-25 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Whiskers
Slough head .••.••.•.•..••.•••••.•••••••••• •'• ••.•.•.•.
1-A-26 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 6A
1-A-184
1-A-185
mouth and backwater.................................. 1-A-186
1-A-27 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8
mouth and discharge site............................. 1-A-187
1-A-28 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Slough 8
head and Mainstem 2 mouth............................ 1-A-188
1-A-29 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
lower backwater and upper backwater.................. 1-A-189
1-A-30 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
NW channel discharge site and head................... 1-A-190
1-A-31 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Mainstem 2
NE channel discharge site and head................... 1-A-191
iv
LIST OF APPENDIX FIGURES (Cont.)
1-A-32 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 8A
mouth and upper backwater............................ 1-A-192
1-A-33 Non-main stem discharge {Provisional USGS 1983)
versus the water surface elevation at Slough 8A
NW channel discharge site and lower discharge
site west channel.................................... 1-A-193
1-A-34 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Slough 8A
lower discharge site east channel and NW channel
head................................................. 1-A-194
1-A-35 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 9
mouth and discharge site............................. 1-A-195
1-A-36 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Slough 9
head and Side Channel 10 mouth....................... 1-A-196
1-A-37 Non-mainstem discharge {Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 at staff gage 133.8S7 and physical
habitat modeling cross section 1..................... 1-A-197
1-A-38 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 physical habitat modeling cross
section 2 and 4 (discharge site)..................... 1-A~198
1-A-39 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 10 head and Lower Side Channel 11
physical habitat modeling cross section 1............ 1-A-199
1-A-40 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Lower Side
Channel 11 physical habitat modeling cross
section 3 and Side Channel below Slough 11
mouth. . . . • . • • • . • . . . . • • . . . . • . . • . • • . . • • • • . . . • . • . . • . • . . . 1-A-200
1-A-41 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel above Slough 11 mouth and Slough 11
mouth................................................ 1-A-201
1-A-42 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 11
discharge site and Upper Side Channel 11 mouth....... 1-A-202
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LIST OF APPENDIX FIGURES (Cont.)
1-A-43 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Upper Side
Channel 11 physical habitat modeling cross
section 2 and 3...................................... 1-A-203
1-A-44 Non-mainstem discharge (Pro vision a 1 USGS 1983)
versus the water surface elevation at Upper Side
Channel 11 discharge site and head................... 1-A-204
1-A-45 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 16B
mouth and discharge site •••••••••••••••••••••••••••.•
1-A-46 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 16B
head and Slough 19 access .•....•...••...••••••..•....
1-A-47 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 19
1-A-205
1-A-206
below mouth and discharge site....................... 1-A-207
1-A-48 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 20
mouth and discharge site............................. 1-A-208
1-A-49 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 20
head and Side Channel 21 mouth....................... 1-A-209
1-A-50 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 21 Upper and Lower discharge sites........... 1-A-210
1-A-51 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
Channel 21 mid channel and Side Channel AS .••••••.•••
1-A-52 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Side
1-A-211
Channel A6 Upper and Slough 21 mouth................. 1-A-212
1-A-53 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 21
discharge site and NW head........................... 1-A-213
1-A-54 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 21
NE head and Slough 22 mouth.......................... 1-A-214
vi
LIST OF APPENDIX FIGURES (Cont.)
1-A-55 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 22
mid slough and discharge site........................ 1-A-215
1-A-56 Non-mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Slough 22
head ••..•••••.•••••..•••••••••••..••••..••.•.••..•••. 1-A-216
vii
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Appendix Table 1-A~l Mainstem Susitna River mean daily discharges determined by
the USGS at their gaging station at Cantwell (15291500) for
WY83 (Oct. 1982-Sept. 1983).
!"'""
---------------------------------------------------------------------------------------DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 5570 1800 1400 1300 1200 1200 1100 2000 19100 16800 17100 16000
2 5200 1800 1400 1300 1200 1200 1100 2100 16600 18200 17400 15000
3 5000 1800 1400 1300 1200 1200 1100 2400 22400 19100 17000 14600
4 4700 1800 1400 1300 1200 1200 1100 2600 24500 17 500 16500 12400
F 5 4400 1800 1400 1300 1200 1200 1100 3000 19100 18800 16500 10900
6 4100 1700 1400 1300 1200 1200 1100 3400 16200 20100 18200 9760
7 4000 1700 1400 1300 1200 1200 1100 3800 15000 22900 18400 8910
1'1"" 8 4000 1700 1400 1300 1200 1200 1100 4300 13600 20800 16900 8370
9 4000 1700 1400 1300 1200 1200 1100 4500 1:2200 18200 22200 7920
10 4000 1700 1400 1300 1200 1200 1100 5400 11600 16400 22300 7700
11 3900 1600 1400 1300 1200 1200 1100 6200 12300 15200 18200 7610 -12 3800 1600 1400 1300 1200 1200 1100 7400 12800 15200 16100 7260
13 3600 1600 1400 1300 1200 1200 1100 8400 12700 14900 16500 6790
14 3500 1600 1400 1300 1200 1200 1100 9200 12200 15200 18100 6570
15 3500 1600 1400 1300 1200 1200 1100 10000 12900 13400 17200 6620
16 3200 1500 1400 1300 1200 1100 1100 11000 14400 12300 16000 6450
17 3100 1500 1400 1300 1200 1100 1100 11200 16500 13200 14700 6830
18 3100 1500 1400 1300 1200 1100 1100 12000 15400 15000 14100 5610
19 3200 1500 1400 1300 1200 1100 1100 11600 15400 15300 12800 . 5450
20 3200 1500 1400 1300 1200 1100 1200 10500 17700 14000 12000 5700
21 2900 1500 1400 1300 1200 1100 1200 10500 17100 14800 13000 77 50
22 2500 1500 1400 1300 1200 1100 1200 9630 17 500 15000 15000 11800
23 2300 1500 1400 1300 1200 1100 1200 9720 18300 15700 14600 13000 -24 2200 1500 1400 1300 1200 1100 1300 10300 18100 17600 17100 10500
25 2100 1500 1400 1300 1200 1100 1300 8960 17700 15800 19900 7700
26 2000 1500 1400 1300 1200 1100 1400 9720 18100 15000 23800 6700
27 2000 1500 1400 1300 1200 1100 1500 10500 18800 14700 21200 5780
F 28 1900 1500 1400 1300 1200 1100 1600 9040 19400 14200 17600 5400
29 1900 1500 1400 1300 1100 1700 10400 18700 14700 15600 5900
30 1900 1500 1400 1300 1100 1800 14900 17400 16000 14800 9500
31 1800 1400 1300 1100 19100 17100 16300
---------------------------------------------------------------------------------------
1-A-1
-·
~1
Appendix Table 1-A-2 Mainstem Susitna River mean daily discharges determined by
the USGS at their gaging station at Gold Creek (15292000)
for WY83 (Oct. 1982-Sept. 1983).
----------------------------------------------------------------------------------------. DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 12400 4800 3000 2900 1900 1900 1500 3600 33000 23100 23000 25400
2 11700 4700 2900 28"00 1900 1900 1500 3900 29000 24900 22400 25400 -3 11000 4600 2900 2800 1900 1900 1500 4200 35000 26200 21600 23600
4 10500 4500 2900 2700 1900 1900 1500 4500 36000 24800 20900 21000
5 9800 4400 2800 2700 1900 1800 1500 4900 30000 25100 21700 18200
6 8960 4300 2800 2600 1900 1800 1500 5400 26000 26300 23800 16000 -7 8640 4300 2800 2500 1900 1800 1500 5800 23000 27200 25000 14800
8 8480 4200 2700 2500 1900 1800 1500 6400 22000 27900 26000 13700
9 8440 4100 2700 2400 1900 1800 1500 7200 19400 26300 29900 13200
10 8480 4000 2700 2400 1900. 1800 1500 8000 18000 22200 31900 12700
11 8220 4000 2600 2400 1900 1700 1500 9000 19000 20000 27700 12200
12 7950 3900 2600 2300 2000 1700 1500 10000 20000 19700 24500 11600
13 8040 3800 2600 2300 2000 1700 1600 12000 19900 19100 25900 11100
14 7800 3800 2600 2200 2100 1700 1600 13000 19000 19800 27400 10700 ~'
15 7110 3700 2600 2200 2100 1700 1600 15000 19600 18600 26800 10600
16 6750 3600 2500 2200 2100 1700 1700 17000 21600 16400 24600 10500
17 6660 3600 2500 2100 2100 1700 1700 19000 23300 16500 22700 10000
18 6720 3500 2500 2100 2100 1700 1800 20000 22900 18900 21000 9400 ~~
19 6900 3500 2400 2100 2100 1700 1800 21000 23000 20600 19200 8920
20 6800 3400 2400 . 2000 2100 1700 1900 21000 25000 18600 17800 9320
21 6500 3400 2400 2000 2100 1600 2000 20000 24000 18100 18900 11000 -. 22 6200 3300 2400 2000 2100 1600 2000 19000 23600 18600 21600 13600
23 6000 3300 2400 2000 2100 1600 2100 18000 25400 19200 22700 17 500
24 5900 3200 2400 2000 2000 1600 2300 17000 24000 22700 24700 15200
25 5700 3200 2300 2000 2000 1600 3400 16000 23300 21900 27400 12000
26 5600 3100 2300 2000 ·2000 1500 3500 16000 23000 19400 31700 10600
•27 5400 3100 2400 2000 2000 1500 2700 17000 22000 18500 31000 9640
28 5300 3100 2400 2000 2000 1500 2900 16000 21900 17700 26600 9080
29 5200 3000 2600 2000 1500 3100 17000 26800 17300 23300 9400 -30 5100 3000 2800 2000 1500 3300 25000 24700 19100 22900 11600
31 4900 2900 2000 1500 32000 22800 24800
----------------------------------------------------------------------------------------
-·
-
-
1-A-2
,_
f'r"'
,....,
!"""
-
'f"'\
r
i
Appendix Table 1-A-3 Mainstem Susitna River mean daily discharges determined by
the USGS at their gaging station at Sunshine (15292780) for
WY83 (Oct. 1982-Sept. 1983).
---------------------------------------------------------------------------------------DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 30600 7800 5600 6800 4600 4100 3100 8400 64000 64400 58300 60500
2 26400 7600 5600 6800 4600 4100 3100 9400 65300 65300 57700 65200
3 26600 7400 5600 6600 4600 4000 3100 11000 70100 67400 56300 59300
4 24800 7200 5500 6400 4500 4000 3100 12000 80800 64800 55400 50600
5 23000 7000 5500 6200 4500 3900 3200 13000 64800 65500 57400 42500
6 21400 7000 5500 6000 4500 3900 3200 15000 54200 70900 60200 36600
7 20600 6800 5500 5800 4500 3800 3200 17000 52700 72800 62000 35000
8 20000 6800 5500 5600 4500 3800 3200 20000 49100 67000 70900 33000
9 19400 6600 5500 5500 4500 3700 3200 22000 45400 70900 97700 32000
10 19100 6600 5500 5400 4600 3700 3200 25000 41900 63000 100000 30000
11 18400 6400 5500 5300 4700 3600 3300 28800 40800 57000 82700 28000
12 18000 6400 5500 5200 4800 3600 3300 32400 43200 54000 68800 27000
13 18800 6200 5500 5100 4900 3500 3400 35600 44700 54400 72700 25000
14 17700 6200 5500 5000 5000 3500 3400 36400 45200 54400 74000 24000
15 15800 6000 5500 5000 5000 3400 3500 37800 47100 51000 67200 23000
16 14600 6000 5500 4900 5100 3400 3600 40600 50100 47900 58000 22000
17 15200 6000 5500 4800 5100 3400 3700 42200 52900 46400 52400 21000
18 14700 6000 5500 4800 5000 3300 3900 42400 53300 48600 48900 21000
19 14600 6000 5500 4700 5000 3300 4000 43000 54800 50000 45700 20000
20 14400 6000 5500 4700 4900 3300 4200 41000 60400 49100 43000 20000
21 13200 5800 5500 4700 4800 3200 4400 40000 63000 47900 48400 22000
22 11600 5800 5500 4700 4700 3200 4600 38000 63600 48800 51100 25000
23 11200 5800 5500 4700 4600 3200 4800 37000 66400 50400 53200 27200
24 9920 5800 5400 4700 4500 3200 5000 35000 67000 55900 54100 25000
25 9200 5800 5400 4700 4400 3200 5400 34000 66200 52300 55300 20800
26 8920 5600 5400 4600 .4300 3100 5800 34000 66400 46900 56000 18800
27 8840 5600 5400 4600 4200 31QO 6200 34000 66000 44000 58800 18300
28 8400 5600 5600 4600 4200 3100 6800 37000 67700 43500 53000 18000
29 8200 5600 6400 4600 3100 7200 43000 68800 44600 47700 19000
30 8000 5600 6800 4600 3100 7800 50000 67000 48100 48600 31400
31 7800 6800 4600 3100 58000 54400 62500
---------------------------------------------------------------------------------------
1-A-3
-
-
Appendix Table 1-A-4 Mainstem Yentna River mean daily discharges determined by the
USGS at their gaging station near Susitna Station (15294345)
for WY83 (OCT. 1982 -SEPT. 1983). ----------------------------------------------------------------------------------------DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 25900 7000 4600 4100 3000 3400 2700 14000 65200 50700 41800 27200 -2 23100 7000 4600 4200 3000 3400 2600 16000 62100 50900 42200 27500
3 21400 7000 4600 4200 3000 3400 2600 18000 58400 49800 43100 27000
4 20900 7000 4600 4100 3000 3400 2600 20000 58600 48300 43300 24100
5 19100 6500 4400 4000 3000 3400 2550 22000 51300 49100 46200 21600 -6 17500 6500 4400 3900 3000 3400 2500 23000 44500 51300 52000 19300
7 15400 6500 4400 3800 3000 3400 2500 24000 44000 57800 59000 17400
8 15000 6500 4400 3700 3000 3400 2500 24000 43800 53700 75000 16400
9 14200 6000 4400 3500 3000 3200 2500 23000 42600 51300 100000 16000 ~
10 13600 6000 4400 3400 3000 3200 2500 24700 41700 48900 112000 15400
11 12700 6000 4200 3300 3100 3200 2500 24900 38500 46800 91200 15000
12 12500 6000 4200 3200 3200 3200 2500 25400 37600 45900 63400 14800
13 12600 6000 4200 3200 3300 3200 2600 26400 37300 47700 56600 14600 """
14 11900 5500 4200 3200 3400 3200 2700 29700 37100 49400 59200 15900
15 11400 5500 4000 3200 3400 3000 2800 31000 37100 49000 49900 19000
16 11000 5500 4000 3200 3400 3000 2900 28700 38500 47000 40400 16900
17 10500 5500 4000 3200 3400 3000 3100 26700 39200 46000 35600 13300
_,
18 10500 5500 4000 3100 3400 3000 3300 26400 42000 45000 34600 12300
19 10000 5000 4000 3000 3400 3000 3500 26800 45000 43000 33600 11500
20 9500 5000 4000 3020 3400 3000 3800 27100 50000 41000 32600 11300
21 9500 5000 3800 3000 3400 3000 4100 27500 51000 39000 35300 12500
22 9000 5000 3800 3000 3400 3000 4600 28200 52000 38000 44300 14000
23 8500 5000 3800 3000 3400 2900 5200 28100 55000 40000 42500 13800
24 8500 5000 3800 3000 3400 2900 5800 28000 57500 42000 36400 12300 -25 8000 4800 3800 3000 "3400 2900 6800 27300 56300 37000 31100 11000
26 8000 4800 3800 3000 3400 2800 7800 26500 57300 32800 27300 10600
27 8000 4800 3800 3000 3400 2800 9000 26500 60200 32000 25200 10100
28 7500 4800 3800 3000 3400 2800 10000 25000 55800 32600 24500 9640 -29 7500 4600 3800 3000 2800 11000 26000 52600 35500 25400 9640
30 7500 4600 3800 3000 2700 13000 29600 51700 39200 26300 12000
31 7000 4000 3000 2700 48500 41800 27700
----------------------------------------------------------------------------------------
-
1-A-4
-
-
Appendix Table 1-A-5 Mainsten Susitna River mean daily discharges determined by the
USGS at their gaging station at Susitna Station (15294350) for
WY83 (Oct. 1982-Sept. 1983).
---------------------------------------------------------------------------------------DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 67000 19000 12000 10500 7600 8200 6600 15000 105000 116000 98400 91800
2 63000 19000 12000 10500 7600 8200 6600 18000 115000 116000 100000 90800
3 60000 18000 12000 10000 7600 8200 6600 21000 125000 117000 101000 93900
4 56000 18000 11000 10000 7600 8000 6520 24000 130000 115000 99800 84200
5 50800 18000 11000 9500 7600 7800 6500 29000 120000 114000 103000 75500
6 45700 18000 11000 9500 7600 7600 6500 34000 110000 118000 107000 67800
7 42200 17000 11000 9200 7600 7600 6500 42000 100000 128000 107000 61800
,.... 8 40500 17000 11000 9000 7800 7400 6500 50000 90000 126000 116000 58100
9 38700 16000 10000 8600 7800 7400 6500 55900 80000 118000 183000 55900
10 37000 16000 10000 8400 7800 7400 6500 62000 75000 113000 218000 53800
11 35200 16000 10000 8200 8000 7200 6400 68000 70000 108000 182000 51800 -12 33800 16000 10000 8000 8200 7200 6400 72000 70000 104000 134000 50300
13 34400 15000 10000 8000 8400 7000 6400 75000 75000 104000 122000 49100
14 34300 15000 10000 8000 8600 7000 6400 75000 80000 106000 129000 49000
15 32000 15000 10000 8000 8800 7000 6400 80000 80000 105000 121000 52000
16 29000 15000 9600 7800 9000 7000 6600 80000 90000 101000 105000 51400
17 29100 15000 9600 7800 9200 7000 6800 82000 95000 99200 94200 46600
18 29200 15000 9200 7800 9400 7000 6800 85000 100000 100000 89000 43100
19 27500 14000 9200 7800 9400 6800 7000 85000 100000 98600 84900 40700
("""' 20 28000 14000 9000 7800 9400 6800 7200 80000 105000 96200 81500 40200
21 27000 14000 9000 7800 9200 6800 7400 75000 110000 94900 82800 43000
22 25000 14000 8800 7800 9200 6800 7800 70000 116000 95300 95200 47900
23 24000 14000 8800 7800 9000 6600 8000 66000 120000 93300 96400 51400
F'" 24 23000 13000 8800 7800 9000 6600 8500 64000 124000 96600 95600 51900
25 22000 13000 8800 7800 ·88oo 6600 9000 62000 122000 94200 92500 45900
26 21000 13000 8800 7800 . 8600 6600 9500 64000 123000 88600 87600 40900
27 21000 13000 8800 7800 8600 6600 10500 66000 125000 83800 87600 39000 -28 20000 12000 8800 7600 8400 6600 11500 70000 122000 82500 85800 37300
29 20000 12000 9000 7600 6600 12500 7 5000 120000 84500 81500 35000
30 19000 12000 9400 7600 6600 14000 85000 119000 88700 79800 46000
31 19000 10000 7600 6600 95000 94000 85800
---------------------------------------------------------------------------------------
,_
1-A-5
Appendix Table 1-A-6 Comparison of mainstem water -surface elevations to mean daily -mainstem discharge (cfs) obtained at the USGS gaging station
at Gold Creek, (15292000).
-----------------------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE ( cf s) -------------
MAINSTEM AT WHISKERS SLOUGH HOUTR 831103 1525 362.57 4,500
(101.2M4 AT R.M. 101.2) 831027 1655 362.60 5,020 ~
821012 1633 362.73 7,950
821009 1030 362.89 8,440
821007 1415 362.96 8,640
831011 1445 363.22 9,520 -830916 0940 363.29 10,500
820822 1630 363.44 12,200
830911 1010 363.55 12,200
820823 1124 363.47 12,300
831001 1505 363.83 13,200
820909 1250 363.64 13,400
820813 1420 363.70 13,600
820927 1825 363.83 13,800
820903 1545 363.97 14,600
820831 364.07 16,000
820807 1347 364.13 16,500
820808 1950 364.22 16,600
830529 1045 364.14 17 ,000 ~
830720 1835 364.40 18,600
8307 22 1850 364.45 18,600
830720 0900 364.49 18,600
830822 1220 364.76 21,600 """' 830805 1635 364.82 21,700
830619 1125 364.90 23,000
830619 1830 364.99 23,000
830617 1142 364.95 23,300
830621 1730 365.24 24,000 -820920 1450 365.39 24,000
830807 1450 365.25 25,000
820715 1110 365.38 25,600
830808 1920 365.63 26,000
830703 1645 365.22 26,200
830706 1405 365.27 26,300
830828 1052 365.53 26,600
~ -------------------------------------------------------
-·
1-A-6
~
-
""'
r
!
Appendix Table 1-A-6 continued
-----
LOCATION ---
MAINSTEM AT WHISKERS SLOUGH HEAD
(101.5M6 AT R.M. 101.5)
---------
-----------------------------
DATE TIME WSEL (ft) DISCHARGE (cfs) --------------
831103 1520 365.11 4,500
831027 1650 365.19 5,020
831020 1645 365.71 7,230
831011 1441 365.92 9,520
830916 1020 366.03 10,500
830911 0930 366.33 12,200
831001 1530 366.60 13,200
830716 1145 366.82 16,400
830529 1045 366.85 17 ,000
830720 1830 367.16 18,600
830722 1825 367.23 18,600
830822 1255 367.64 21,600
830805 1630 367.72 21,700
830619 1120 367.68 23,000
830617 1735 367.86 23 ,300
830807 1455 368.07 25,000
830808 1900 368.36 26,000
830703 368.02 26.200
830706 1400 368.11 26 ,300
830828 1055 368.24 26 ,600
----------------------------
1-A-7
-
1-A-8
Appendix Table 1-A-6 continued
-----------------
"""" LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) ---------
tALKEETNA FISKWHEEL STATION 830717 0900 376.78 16,500
(103".0F1 AT R.M. 103.0) 820707 1715 376.86 16,600
~ (continued) 830529 0830 376.91 17,000
830527 0830 377.15 17,000
830524 0800 377.22 17 ,000
820924 1530 377.13 17,100 .... 830729 0925 376.96 17,300
830923 0900 377.08 17,500
830728 0920 377.08 17.700
830820 0855 377.18 17,800
830523 0803 377.24 18,000
830610 0830 377.32 18,000
830721 1000 377 .os 18,100
830727 0915 377.22 18,500
830722 1015 377 .21 18,600
830720 0900 377.32 18,600
830715 1000 377.37 18,600
830718 0900 377.03 18,900
830821 0915 377.23 18,900
"""" 830611 0900 377.18 19,000
830522 1000 377.33 19,000
830614 0815 377.43 19,000
830730 0840 377.12 19,100
830713 1000 377.26 19,100
830723 1030 377.18 19,200
830819 0910 377.49 19,200
830726 0910 377.42 19,400
820923 1800 377.53 19,400
II"" 830609 0800 377.66 19,400
830615 0800 377.38 19,600
830712 1000 377.33 19,700
830714 1000 377.38 19,800
830613 0815 377.50 19,900
830521 1000 377.37 20,000
830612 0830 377.39 20,000
830711 1000 377.47 20,000
820914 1510 377.7 5 20,200
830719 0900 377 .63 20,600
830804 2010 377.69 20,900
830520 1245 377.35 21,000
830519 1000 377.64 21,000
830818 1005 377.78 21,000
830616 0900 377.61 21,600
830822 0910 377.66 21,600
830803 0930 377.74 21 ,600
------------------------------------------------------------------------
r 1-A-9
Appendix Table 1-A-6 continued
------------------. --------------------------
LOCATION DA'rE TIME WSEL (ft) DISCHARGE (cfs) -----·--------
!ALKEETNA FISBWBEEL STATION 830805 0950 377.71 21,700
(103.0F1 AT R.M. 103,0) 820721 2400 377.92 21,900
(continued) 830725 0915 377.94 21,900 -830628 0800 378.51 . 21,900
830608 0800 378.04 22,000
830627 0800 378.19 22,000
830710 1000 377.93 22,200
820922 1255 378.20 22,300 -
830802 0910 377.94 22,400
820802 1425 378.21 22,500
830724 1010 377.89 22,700
830823 0835 377.93 22,700 -830731 1110 377.79 22,800
830618 0900 378.18 22,900
830619 0900 377.94 23,000
830619 1140 377.99 23,000 -830801 0855 378.01 23,000
830626 0800 378.05 23,000
830607 0800 378.39 23,000
830701 1200 377 .95' 23,100
830617 0905 378.03 23,300
830625 0830 378.25 23,300
830622 0800 378.29 23,600
820729 1630 378.31 23,600
830806 0920 377.96 23 ,BOO -830624 0825 378.35 24,000
830621 0850 378.36 24,000
820920 1610 378.51 24,000
820921 1340 378.41 24,200 -830709 1000 378.29 24,300
830812 0820 378.44 24,500
830824 0815 378.00 24,700
830630 0800 378.28 24,700
830704 0900 378.22 24,800
830702 1000 377.89 24,900
820719 0715 378.42 24,900
830530 0830 377.88 25,000
830620 0900 378.14 25,000 -830807 0920 378.40 25,000
830530 1535 378.41 25,000
830530 1845 378.72 25,000
830530 2310' 378.86 25,000 -830705 1000 378.03 25,100
830623 0820 378.34 25,400
820718 2300 378.43 25,400 --------------------------------------------------------------
1-A-10
-
-Appendix table 1-A-6 continued
--------------------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) --------
TALKEETNA FISHWHEEL STATION 820716 1300 378.42 25,600
(103.0Fl AT R.M, 103.0) 830813 0745 378.43 25,900 -{continued) 830808 0905 378.35 26,000
830606 0930 378.58 26,000
830703 1000 378.35 26,200
830706 1100 378.42 26,300 -820801 1645 378.76 26,400
820730 1320 378.90 26,400
830828 0925 378.82 26,600
830629 0900 378.58 26,800 -820724 1345 378.87 26,800
820918 1217 379.02 26,800
820625 2200 378.99 27,000
830707 0900 378.48 27 ,200
820714 0745 378.81 27 ,300
830825 0835 378.60 27,400
830811 0850 379.25 27.700
830708 1200 378.98 27. 90()
820731 1100 379.24 28,400
830602 0810 379.07 29,000
820727 1535 379.24 29,100
830809 0950 379.00 29,900
830605 0900 379.68 30,000 -830827 0710 379.55 31,000
830826 0815 379.11 31,700
820726 1430 379.88 31,800
830810 0910 379.7 5 31,900 -820725 1255 379.95 31,900
830531 0815 379.15 32,000
830531 1805 379.7 5 32,000
820916 1445 380.01 32,500
830601 0800 379.66 33,000 -830601 1800 379.90 33,000
830603 0830 379.06 35,000
830603 1150 379.31 35,000
830603 2245 380.58 35,000 .... 830604 0815 380.45 36,000
----------------------------------------------------
r-
1-A-11
-
Appendix Table 1-A-6 continued
------------------------------------
LOCAtiON DATE TIME WSEL (ft) DISCHARGE ( cfs) ----------
LEFT BANK AT LRX 9 831020 1640 377.97 7,230
(103.2Ml AT R.M. 103.2) 831011 1434 378.51 9,520
830917 0850 378.60 10,000
830916 1112 378.76 10,500
830915 1004 378.76 10,600
830911 1500 379.18 12,200
830923 0921 380.41 17,500
830722 1240 380.64 18,600
830805 1605 381.51 21,700
830704 1110 381.70 24,800
830807 1030 381.96 25,000
830808 1030 381.92 26,000
830808 1810 382.54 26,000
830706 1245 382.02 26,300
830828 1100 382.71 26,600
830825 1033 382.30 27,400
830827 0910 383.46 31,000
830826 0920 383.00 31,700
-
-
-
1-A-12
""" Appendix Table 1-A-6 continued
-------------------------
LOCAnON DATE TIME WSEL (ft) DISCHARGE ( cfs) ------
RIGHT BANK AT LRX lOB 831103 1506 400.18 4,500
(105.9Ml AT R.M. 105.9) 831020 1630 400.92 7,230
~ 831011 1431 401.34 9,520
830916 1205 401.28 10,500
830915 1012 401.31 10,600
830912 0930 401.49 11,600 -831003 1255 401.78 13,000
830528 1845 402.19 16,000
830529 1615 402.36 17,000
830720 1820 402.39 18,600 ,-830612 1130 402.56 20,000
830822 1515 402.89 21,600
830805 1600 402.92 21,700
830619 1110 402.98 23,000
830808 1804 403.71 26,000 ,_, 830706 1240 403.40 26,300
830828 1115 403.65 26,600
830826 0930 404.09 31,700
r""" -----------------------------------
''~"'"'
1-A-13
-
Appendi~ Table 1-A-6 continued
LOCATION DATE TIME \ISEL ( ft) DISCHARGE (ds)
RIGHT BANK AT LRX lOC 831020 1630 406.16 7,230 """ (106.4Ml AT R.H. 106.4) 831011 1430 406.53 9,520
830916 1235 406.59 10,500
830915 1014 406.64 10,600
830912 0940 406.81 11,600
831003 1310 407 .15 13,000 -830528 1815 407 .51 16,000
830519 1650 407 .58 17,000
830519 16JO 407.65 17,000-
830720 1810 407.74 18,600 ~ 830612 1143 407.94 20,000
830822 1525 408.11 21,600
830805 1555 408.05 21,700
830619 1105 408.22 23,000
830808 1800 408.86 26,000 -830706 1230 408.55 26,300
830828 1115 408.79 26,600
830826 0935 409.09 31,700 ---------------
-
-
-
-
1-A-14
Appendix Table 1-A-6 continued
---------------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) --------
RIGHT BANK AT LRX 11 831103 1500 406.61 4,500
(106.7M1 AT R.M. 106.7) 831020 1625 407.63 7,230
831011 1427 407.97 9,520
830916 1310 408.07 10,500
830915 1016 408.11 10,600
830912 0945 408.31 11,600
831003 1320 408.67 13,000
830528 1720 409.09 16,000
830529 1700 409.24 17,000
83072.0 1815 409 •. 45 18,600
830612 1200 409.59 20,000
830822 1550 409.91 21,600
830805 1550 410.03 21,700
830619 uoo 410.00 23 .ooo
830808 1758 410.71 26,000
830706 1230 410.41 26,300
830828 1115 410.67 26,600
830826 0940 410.96 31,700
------------------------------------------
-
1-A-15
Appendix Table 1-A-6 continued
---------------
LOCATION
MAINSTEM AT SLOUGH 6A MOUTH
(112.3W1 AT R.M. 112.3)
DATE
821006
820807
820722
820729
820921
820723
820917
I
____ _, ________
TIM! WSEL (ft) DISCHARGE ( cfs) ---------------
1600 455.06 8,960
1205 456.43 16,500
1550 457.11 22,400
1445 457.29 2.3,600 -1000 457.41 24,200
1100 457.27 24,900
1720 458.22 32,000
---------------------
-
-
-
-
-
1-A-16
-Appendix Table 1-A-6 continued
-------------·-·-----------------------------
~""', LOCAT!Olf DATE TIME WSEL (ft) DISCHARGE (cfs) -----------
LEFT BANK AT LRX 16 830917 0945 455.64 10,000
(112.4M2 AT R.M. 112.4) 830916 1412 455.71 10,500
830915 1042 455.71 10,600
831004 1125 456.11 11,400
830912 1140 455.92 11,600
830922 1823 455.95 13,600
830528 1254 456.60 16,000
830528 1240 456.85 16,000
830720 1750 457 .02 18,600
830722 1710 457 .09 18,600
830612 1300 457 .19 20,000
830822 1717 457.49 21,600
830805 1518 457.42 21,700
830619 0950 457.46 23,000
830824 163{) 457.73 24,700
830807 1535 457.76 25,000
830808 1733 457 .98 26,000
830706 1210 457.86 26,300
830809 1500 458.25 29,900 -830826 1045 458.31 31,700
----------------------· -----------------------------------
-
1-A-17
-
-
~
Appendix Table 1-A-6 continued
------------------------------------------------
LOCATION DATE TIME WSEL (ft) DI SCBARGE ( cf s ) -------
RIGHT BANK AT LRX 18 831103 1436 459.27 4,500
(113.0M1 AT R.M. 113.0) 831027 1630 459.56 5,020
831020 1620 460.43 7,230
821012 1623 459.92 7,950 -821008 1500 460.14 8,480
831011 1324 460.68 9,520
821004 1325 460.65 10,500
830916 1416 460.90 10,500 -830915 1050 460.93 10,600
83~004 1210 461.26 11,400
830912 1230 461.16 11,600
820909 1645 461.36 13,400
830922 1820 461.63 13,600 ~
820903 1600 461.64 14,600
820831 461.66 16,000
820920 1518 462.89 24,000
830824 1625 463.27 24,700
830807 1820 463.27 25,000
830808 1055 463.37 26,000
830808 1728 463.66 26,000
830825 1105 463.51 27 ,400 ..,..,
830825 1845 464.07 27,400
830825 1010 464.25 27,400
830826 1535 464.33 31,700
JIIIF!':-:-------------------------------------
-
-
-
1-A-18 -·
.-... Appendix Table 1-A-6 continued
-----------------------------------------------
LOCAT10N DATE 'II ME WSEL (ft) DISCHARGE ( cfa) -----------
MAINSTEM BELOW LANE CREEK MOUTH 831103 1431 462.19 4,500
(113.4K6 AT R.K. 113,4) 831020 1620 463.64 7,230 -831011 1321 464.03 9,520
830916 1418 464.32 10,500
830915 1052 464.43 10,600
831004 1220 464.68 11,400
830912 1310 464.52 11,600
830912 1145 464.54 11,600
830922 1815 46 5.14 13,600
830528 1045 465.48 16,000
830716 1135 465 .3'8 16,400
830720 1635 465.83 18,600
830615 1820 466.07 19,600
830612 1320 466.03 20,000
830616 1620 466.35 21,600 ,.... 830805 1500 466.37 21,700
830619 1000 466.34 23,000
830807 1540 466.87 25,000
830808 1705 467.26 26,000 -830706 1200 466.89 26,300
830825 1655 467.19 27,400
830826 1545 468.12 31,700
-----------------------------------------------------------------
-~
1-A-19
Appendix Table 1-A-6 continued
LOCATION
MA.INSTEM AT LANE CREEK MOUTH
(113.6M9 AT R.M. 113.6)
-----------------
,...,.,
-------------------------
DATE TIME WSEL (ft) DISCHARGE ( cf& ) -------
830716 1140 466.73 16,400
830820 1307 467.09 17,800
830710 1100 467.73 22,200
830625 1030 467.72 23,300
830622 1100 467.75 23,600
830622 1242 467.75 23,600
830807 1540 467.87 25,000
830623 1030 467.92 25,400 -830808 1720 468.18 26,000
830825 1730 468.13 27,400
830814 1140 468.23 27,400
830826 1545 468.87 31,700
-
-
1-A-20
""" Appendix Table 1-A-6 continued
---------------------..... LOCA'!ION DATE TIME WSEL (ft} DISCHARGE ( cfs} ------------
MAINSTEM ABOVE LANE CREEK MOU'l'H 831103 1425 464.53 4,500
(113.7M5 AT R.M. 113.7} 831020 1615 465.91 7,230
831011 1319 466.26 9,520
830916 1421 466.55 10,500
830915 1056 466.65 10,600
831004 1225 466.91 11,400
~ .... 830912 1505 466.84 11,600
830912 1121 466.86 11,600
830922 1817 467.61 13,600
830528 0950 468.35 16,000
~ 830716 1230 468.06 16,400
830720 1630 468.52 18,600
830615 1730 468.71 19,600
830612 1330 468.71 20,000
830805 1455 469.23 21,700 ,_
830710 1201 469.25 22,200
830802 1130 469.24 22,400
830619 1000 469.17 23,000
830530 1750 470.61 25,000
830808 1700 470.09 26,000
830706 1200 469.68 26,300
830825 1700 470.13 27,400
830809 1920 470.51 29,900
830826 1550 470.62 31,700
------------------------------------------------
1-i\-21
Appendix Table l-A-6 continued
----------------------·-----------LOCATION
MAINSTEM ABOVE MAINSTEM 2 MOUTH
(114.4Ml AT R.M. 114.4)
'~
------------------------
DATE TIME WSEL (ft) DISCHARGE (cfs) ---------------
831011 1316 475.02 9,520
830916 1830 47 5.15 10,500
830915 1100 475.17 10,600
831004 1325 475.34 11,400
830912 1800 475.65 13,600
830720 1300 476.30 18,600
830612 1540 476.47 20,000
830805 1430 476.82 21,700
830619 1010 476 .83 23,000
830806 1930 477.06 23,800
830824 1440 477.21 24,700
830808 1120 477.30 26,000
830706 1150 477.36 26,300
830825 1120 477.54 27,400
830826 1800 478.53 31,700
-
-
1-A-22 -
Appendix Table 1-A-6 continued
-------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) -----------
MAINSTEM A/B MAINSTEM 2 NW HEAD 831103 1415 479.84 4,500
(115.5M4 AT R.M. 115.5) 831020 1610 480.99 7,230
831011 1312 481 .39 9.520
831005 1145 481.71 10,300
830916 1755 481.62 10,500
830915 1104 481.65 10,600 -830912 1705 481.88 11,600
830922 1805 482.47 13,600
830526 1630 482.92 16,000
830721 1950 483.23 18,100 -830720 1250 483.30 18,600
830611 1430 483.24 19,000
830611 1345 483.49 19,000
830805 1250 483.84 21,700
830619 1015 483.91 23,000
830806 1920 484.12 23,800
830824 1355 484.24 24,700
830530 1537 484.53 25,000
830808 1118 484.39 26,000 -830706 1145 484.39 26,300
830825 1130 484.57 27,400
830826 1835 485.50 31,700
-
-
-
1-A-23
Appendix Table 1-A-6 continued
------------------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (c:fs) -------------
MAINSTEM A/B KAINSTEM 2 NE HEAD 831103 1410 481.15 4,500
(115.9M2 AT R.M. 115.9) 831027 1620 481.67 5,020
831020 1600 482.42 7,230
831011 1307 483.07 9,520
831005 1205 483.40 10,300
830916 . 1710 483.31 10,500
830915 1109 483.31 10,600
830912 1710 483.59 11,600
830922 1808 484.24 13,600
830526 1515 484.58 16,000
830721 1940 485.08 18,100
830720 1200 485.20 18,600 -830611 1430 485.04 19,000
830612 1345 485.32 20,000
830805 1240 485.74 21,700
830619 1020 485.78 23,000
830806 1915 486.13 23,800 ~
830824 1340 486.19 24,700
830530 1430 486.35 25,000
830808 1116 486.43 26,000
830706 1136 486.37 26,300 -830825 1130 486.62 27,400
830827 1020 487.45 31,000
830826 1840 487.62 31,700
---··----------------------------
-
1-A-24
,....., Appendix Table 1-A-6 continued
---·------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ---------------
RIGHT BANK AT LRX 24 831103 1400 519.93 4,500
(120.7M1 AT R.M. 120.7) 831027 1605 520.17 5,020
"""' 831020 1600 521.08 7,230
821012 1617 520.88 7,950
821008 1300 521.04 8,480
831011 1253 521.48 9,520 -831005 1320 521.72 10,300
821004 1139 521.60 10,500
830916 1447 521.67 10,500
830915 1625 521.73 10,600 -820907 1000 521.70 11,700
820908 0930 521.72 11,900
820829 1500 521.82 12,200
820906 1800 521.82 12,200
820930 1652 522.06 12,500
831003 0954 521.79 13,000
820830 1330 522.01 13,100
820912 1030 522.06 13,200
820909 1645 522.08 13,400 -' 820911 1030 522.12. 13,600
820910 0945 522.22 14,400
820903 1350 522.35 14,600
820913 1220 522.49 15,200
830924 1650 522.59 15,200
820831 1230 522.58 16,000
820914 1600 523.18 20,200
830619 1230 523.66 23 ,000
820919 1226 524.05 24,100 ,_ 830824 1224 523.90 24,700
830807 1250 524.00 25,000
830828 1557 524.01 26,600
830809 1010 524.46 29,900
830827 1040 524.90 31,000
-----------------------------------------------------------------
-
1-A-25
Appendix Table 1-A-6 continued
------------------------------
LOCATION DATE TIME W~EL (ft) DISCHARGE ( cfs) ----------
RIGHT BANK AT LRX 28 831103 1355 550.82 4,500
(124.4M1 AT R.M. 124.4) 821008 1000 552.39 8,480
831011 1248 552.58 9,520
821004 1129 553.14 10,500 -830916 1420 553 .20 10,500
830915 1558 553.24 10,600
830914 1815 553 .28 10,700
820930 1352 553 .so 12,500 -· 831003 1453 553.90 13,000
820909 1645 554.17 13,400
820903 1233 554.47 14,600
820902 1836 554.61 16,000
830615 1700 555.63 19,600
830804 1601 556.34 20,900
830805 1150 556.14 21,700
830823 1030 556.25 22,700
830619 1148 556.26 23,000 -820919 1201 556.77 24,100
830630 1215 556 .5·2 24,700
830706 1210 556.54 26,300
830828 1548 556.88 26 ,600
830825 1224 557 .03 27,400
830809 1035 557 .38 29,900
830827 1055 557.72 31,000 -------------------------------------
-
1-A-26
-
-
Appendix Table 1-A-6 continued
------------------------------------LOCATION DATE TIME WSEL (ft) DISCliAR.GE ( c_fs) ---------
SIDE CHANNEL AT SLOUGH SA MOUTH 830924 1150 562.54 15,200
(125.3M4 AI R.M. 125.3) 830721 1100 562.77 18,100
830718 1200 562.93 18,900
830804 1523 563.09 20,900
830803 1505 563.21 21,600
830607 1430 563.42 23,000
830630 1220 563.33 24,700
830623 1015 563.54 25,400
830902 1630 563.55 25,400
830606 1700 563.54 26 ,000
830814 1345 563.71 27,400
830809 1040 563.87 29,900 ....
830809 1730 564.13 29,900
830605 1005 564.07 30,000
830827 1115 564.09 31,000
830604 1750 564.68 36,000
830604 1000 564.78 36,000
----------------------------------------------
-
-
1-A-27
-
''''"
Appendix Table 1-A-6 continued
----------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) --------
RIGHT BANK AT LRX 29 821012 1608 568.41 7,950
(125.3M3 AT R.M. 126.1) 831011 1238 569.18 9,520
821004 1123 569.51 10,500 -821001 1100 570.02 12,400
820909 1640 570.41 13,400
820831 570.91 16,000
830716 1930 571.45 16,400
830721 1920 571.89 18,100 -830720 1115 572.00 18,600
830615 1448 572.16 19,600
830805 1130 571.54 21,700
830823 1000 572.64 22,700 -830619 1142 57 2.61 23,000
830625 1010 572.86 23,300
820920 1131 572.18 24,000
830630 1540 572.80 24,700
830630 1220 573.23 24,700
830623 0948 573.16 25,400
830706 1159 573.11 26,300
830828 1544 573.15 26,600
830825 1234 573.35 27,400 ~
830809 1415 572.81 29.900
830605 1015 573.88 30,000
830827 1240 573.96 31,000
830531 1308 574.12 32,000 um.
830603 1900 574.75 35,000
830604 1800 574.60 36,000
830604 1000 574.75 36,000 ---------------------------------
~it
-
1-A-28 -
~'
-
Appendix Table 1-A-6 continued
--------·--------------------------------------------
LOCATION
MAINSTEM ABOVE SLOUGH SA NE HEAD
(125.3M6 AT R.M. 12.7 .1)
DATE
830916
830914
830721
830720
830718
830615
830804
830805
830823
830619
830825
830827
--------------·---
1-A-29
TIME WSEL (ft) DISCHARGE ( cf s) -------
1411 579.98 10,500
1630 580.08 10,700
1915 581.44 18,100
1125 581 .54 18,600
1015 581.95 18,900
1150 581.70 19,.600
2033 581.78 20,900
1120 582.05 21,700
0930 582..06 22,700
1140 582..29 23,000
1341 582.77 27,400
12.10 583.37 31,000
--------------------
-
-1
Appendix Table 1-A-6 continued -, ---------------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) ------------------
-r
RIGHT BANK AT LRX 31 831103 1330 594.34 4,500
(l28.7M1 AT R.M. 128.7) 831027 1550 594.50 5,020
831020 1545 595.54 7. 230
821012 1605 595.05 7,950 -831011 1222 595.92 9,520
821004 1117 595.95 10,500
830916 1407 596.13 10,500
830914 1320 596 .15 10,700
821001 1259 596.39 12,400 """" 831003 1530 596.71 13,000
820909 1640 596.92 13,400
820903 1220 597 .15 14,600
820902 1619 597.29 16,000 -830614 1336 597.71 19,000
830818 1540 597.94 21,000
830805 1100 598.07 21,700
830805 1400 598.15 21,700
""""' 820919 1103 598.38 24,100
830808 1845 598.72 26,000
830828 1533 598.50 26,600
830825 1446 598 .66· 27,400
830810 0935 599.39 31,900 --------------------------------------
-
1-A-30
,.~ Appendix Table 1-A-6 continued
-------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ---------
RIGHT BANK AT LRX 32 831103 1330 606.05 4,500
(129.7M1 AT R.M. 129.7) 831027 1540 606.15 5,020
831020 1540 606.53 7,230
831011 1216 606.70 9,520
830916 1402 606 .81 10,500
830914 1355 606.82 10.700
'*""
831003 1533 607.11 13,000
830720 1105 607.40 18,600
830613 1644 607.54 19,900
830818 1545 607.61 21,000
830803 1240 607.57 21,600
830805 1055 607.61 21,700
830805 1438 607.61 21,700
830619 1133 607.66 23,000
830630 1150 607.76 24,700
830630 1152 607.76 24,700
830623 1400 607.90 25,400
830808 1840 607.96 26,000
830706 1109 607 .81 26,300 -830828 1530 607.81 26,600
830825 1450 607.91 27,400
830809 1745 608.36 29,900
830810 0940 608.38 31,900 ------------------------------------
-r
1-A-31
~
Appendix Table 1-A-6 continued 14'l
--------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ----------------
RIGHT BANK AT LRX 33 831103 1140 611.13 4,500
(130.1M1 AT R.M. 130.1) 831027 1515 611.28 5,020
831020 1540 611.82 7,230 -831011 1213 612.14 9,520
830916 1400 612.25 10,500
830914 1430 612.26 10,700
831003 1534 612.32 13,000 ,..~~ ... 830720 1100 613.16 18,600
830614 1216 613.11 19,000
830819 1131 613.49 19,200
830818 1545 613.36 21,000
830803 1230 613.43 21,600 --830805 1050 613.41 21,700
830623 1400 613.76 25,400
830808 1840 613.81 26,000
830706 1056 613.63 26,300 ~
830828 1529 613.71 26,600
830825 1451 613.75 27,400
830809 1750 614.21 29,900
830810 0940 614.22 31,900 -------------------------------------------
-
~-
1-A-32
. .-Appendix Table 1-A-6 continued
-----------------· ---------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) -------
RIGHT BANK AT LRX 34 831103 1130 613.78 4,500
(130.5Ml AT R.M. 130.5) 831027 1505 614.09 5,020
831020 1535 615.12 7,230
831011 1207 615.32 9,520
830916 1358 615.55 10,500
830914 1510 615.53 10,700
831003 1535 616.01 13,000
830720 1055 616.97 18,600
830614 1140 616.93 19,000
830818 1550 617.27 21,000
830803 0940 617 .37 21,600
830805 1050 617.33 21,700
830619 1130 617.54 23,000
830630 1157 617.54 24,700
830623 1400 617.89 25,400 -830808 1835 617.94 26 ,000 ,,
830706 1105 617 .74 26,300
830828 1527 617.77 26 ,600
830825 1453 617.84 27,400 -830809 1800 618.09 29,900
830810 0945 618.46 31,900
-------------------------------------------
-
1-A-33
Appendix Table 1-A-6 continued -
-------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) -------------llii!R?l'
RIGHT BANK AT LRX 3 5 831103 1122 615.29 4,500
(130.9M1 AT R.M. 130.8) 831027 1500 615.62 5,020
831020 1535 616.52 7,230 -~ 821004 1107 617.14 10,500
830916 1355 617.23 10,500
821001 1406 617.58 12,400
830910 1143 617.81 12,700
831003 1534 617.87 13,000
830909 1143 617.81 13,200
820909 1630 618.05 13,400
820903 1210 618.28 14,600
820902 1518 618.47 16,000
820831 618.55 16,000
830613 1450 619.19 19,900
830818 1550 619.37 21,000
830803 1604 619.40 21,600
830803 0945 619.48 21,600
830805 1045 619.42 21,700
830823 1102 619.56 22,700
830619 1127 619.55 23,000
820919 1040 619.86 24,100 .,.~
830623 1400 620.17 25,400
830808 1723 620.27 26,000
830808 1835 620.27 26,000
830828 1525 620.00 26,600
830825 1455 620.26 27,400
820915 1047 620.66 28,200
830809 1800 620.97 29,900
830826 1121 620.97 31,700 ~>
830810 0945 621.07 31,900
820917 1016 621.08 32,000
--------------------------------------------------------
-
1-A-34
-
""" Appendix Table 1-A-6 continued
-----------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) --·
MAINSTEM B/L 4TH OF JULY CR 821012 1603 615.17 7,950
(131.1M3 AT R.K. 131.1) 831011 1158 615.53 9,520
830912 1452 615.46 11,600
820907 1750 615.64 11,700
820822 1340 615.63 12,200
830910 1058 615.59 12,700
831003 1540 615.55 13,000
820813 1235 615.69 13,600
820818 1735 615.74 14,200
820902 1705 616.01 16,000
830613 1415 616.11 19,900
830803 1700 616.38 21,600
830803 1550 616.41 21,600
830803 1115 616.53 21,600
830822 1230 616.56 21,600
830805 1430 616.52 21,700
830823 1037 616.67 22,700
830624 1644 617.23 24,000
830709 1130 616.74 24,300
!'1'», 830808 1653 617.73. 26,000
830828 1523 617.28 26,600
830828 1602 617.31 26,600
820915 1100 618.19 28,200
830826 1115 618.55 31,700
820917 1104 618.72 32,000
------------------------------------------------------------
1-A-35
Appendix Table 1-A-6 continued -·
------------------
LOCATION DATE TIME WSEL (ft:) DISCHARGE (cfs) -------'f'
LEFT BANK AT LRX 37 831103 1115 626.49 4,500
(131.8M1 AT R·.M. 131.8) 831027 1450 626 .so 5,020
831020 1530 627.26 7,230
831011 1155 627.47 9,520
830916 1352 627.81 10,500
830910 1221 628.31 12.700
831003 1242 628.21 13,000
830614 1033 629.33 19,000 -830803 1608 629.84 21,600
·830805 1426 629.00 21,700
830823 1020 629.92 22,700
830619 1122 629.90 2.3,000
830808 1653 630.80 26,000
830828 1521 630.36 26,600
830825 1459 630.56 27.400
830826 1125 631.00 31,700 !!!">'
830810 1240 631.12 31,900
------------------------
-
-
r-A-36
Appendix Table 1-A-6 continued
----------------
LOCATION DATE TIME WSEL (ft) DISCHARGE ( efs) --------
MAINSTEM AT SIDE CHANNEL 10 MOUTH 831103 1110 649.62 4,500
(133.8M6 AT R.M. 133.8) 831027 1445 649.96 5,020
831019 1258 650.47 8,010
831011 1149 650.77 9,520
830916 1346 650.86 10,500
831003 1237 651.18 13,000
830717 1724 651.53 16,500
830729 1839 651 .58 17,300
830728 1410 651.63 17,700
830727 1015 651.70 18,500
830730 1112 651.78 19,100
830726 1300 651.73 19,400
830803 1638 651.92 21,600
830805 1422 651 ~92 21,700
830725 1020 651.98 21,900 ~ 830710 17 55 651.88 22,200
830724 1020 652.03 22,700
830823 1120 652.07 22,700
830731 1122 652.06 22,800
!""" 830618 651.96 22,900
830619 1116 651.96 23,000
830626 1400 652.33 23,000
830625 1630 652.18 23 ,300 ...,.. 830622 1805 652.18 23,600
I 830806 1100 652.13 23,800 ! 830624 1026 652.18 24,000
830623 1400 652.33 25,400 -830813 1225 652.43 25,900
830808 1150 652.28 26,000
830808 1649 652.43 26,000
830828 1516 652.26 26,600
830629 1520 652.31 26,800
830825 1505 652.48 27,400
830810 1345 653 .08 31,900
830810 0848 653.26 31,900
------------------------------------------------
-
-~
1-A-37
"""
Appendix Table 1-A-6 continued
--------------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE (c:fs)
""""'
LEFT BANK AT LIX 40 831103 1105 654.75 4,500
(134.3Ml AT R.M. 134.3) 831027 1430 654.99 5,020
821012 1601 655.44 7,950
831019 1255 655.57 8,010
831011 1146 655.80 9,520
821004 1059 655.83 10,500
830916 1344 655.90 10,500
830911 1434 656 .06 12,200 -821001 1631 655.99 12,400
830910 1303 656.13 12,700
830910 1713 656 .15 12,700
831003 1235 655.99 13,000 -830909 1624 656.17 13,200 '
820909 1430 ''-...._ 656.24 13,400
820902 1452 656.47 16,000
820831 656.49 16,000
830729 1730 656.71 17,300
830728 1410 656.84 17,700
830727 1015 656 .93 18,500
830713 1605 '" 656 .84 19;100
830730 1115 '," 656.94 19,100 -830609 1132 656.91 19,400
830613 1107 656.94 19,900
820914 1815 657 .12 20,200
830803 1840 657 .19 21,600 .-.
830805 1420 657.33 21,700
830725 1020 657.29 21,900
830608 1736 657 .26 22,000
830608 1135 657.27 22,000 ,.,..,
830710 1755 657.21 22,200
830823 1322 657.41 22,700
830724 1528 657.47 22,700
830731 1125 657.47 22,800
830619 1115 657.41 23,000 -830607 1637 657 .59 23,000
830625 1630 657.69 23,300
830622 1805 657.94 23,600
830806 1100 "-657 .57 23,800
830624 1026 657.67 24,000
820919 1006 657.60 24,100
830709 1520 657 .51 24,300
830702 1655 657.66 24,900 ~.
830813 1225 657 .89 25,900
830606 1045 657.74 26,000
830808 1148 "'657 .87 26,000 --------------------------------------------------------------------------
-
1-A-38 -
-
Appendix Table. 1-A-6
LOCATION
LEFT BANK AT LRX 40
(134.3M1 AT R.M. 134.3}
(continued)
continued
DATE
830808
830825
830708
820915
830605
830826
830810
830810
820917
1-A-39
TIME
1648
1508
1615
1119
1430
1728
1340
0844
1005
WSEI. (ft)
658.07
658.04
657.94
658.37
658.17
658.74
658.59
658.69
658.67
DISCHARGE (cfs)
26,000
27,400
27,900
28,200
30,000
31,700
31,900
31,900
32,000
Appendix Table 1-A-6 continued -
--------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ~' -----------
MAINSTEM AT SLOUGH 16B MOUTH 831103 1036 693.24 4,500
(138.0M2 AT R.M. 138.0) 831027 1245 693.60 5,020
831020 0935 694.50 7,230 -821012 1551 694.22 7,950
831019 1151 694.64 8,010
831007 694.77 8,760
831011 1110 695.12 9,520 #>
830916 1145 695.51 10,500
830914 1535 695.53 10,700
821002 1425 695~62 11,700
820822 1440 696.06 12,200
831003 1212 696.33 13,000 ~
820909 1420 696.49 13,400
820813 1105 696.53 13,600
820902 1115 697.05 16,000
820914 1656 698.04 20,200 """'·
830822 0947 698.32 21,600 ..
830805 1354 697 .30 21,700
830619 0944 698.46 23,000
820920 1340 698.69 24,000 ~~
820919 1705 698.72 24,100
820723 1000 698.74 24,900
830808 1640 699.44 26 ,000
830828 1506 699.06 26 ,600
830825 0806 699.29 27,400
820915 1259 699.93 28,200
830809 1648 699.04 29,900
820726 1230 700.00 31,800
820725 1105 700.05 31,900
----------------------------------------
~·
-
1-A-40
-
-Appendix Table 1-~
;.}~
continued
-------------------------------------------LOCArlOH DATE TIME WSEL (ft} DISCHARGE ( cfs} ------------
MAINSTEM AT HEAD OF SLOUGH 16B 820909 1420 701.98 13,400
(138.0M4 AT R.M. 138.3) 820813 1020 702.02 13,600
820831 1900 702.55 16,000
830612 1743 703.09 20,000
820914 1623 703.32 20,200
830804 1600 703.25 20,900 -830822 0953 703.40 21,600
I 830805 1330 703.46 21,700
830619 1010 703.49 23,000
830701 1600 703.44 23,100
F"" 820920 1330 703.76 24,000
I
820919 1540 703.73 24,100
830808 1635 704.24 26,000
830706 0950 703.93 26,300
830828 1.503 703.95 26 ,600 r 820915 1249 704.72 28,200
830809 1645 704.73 29,900
830810 1618 704.69 31,900
820725 1120 704.78 31,900
"!""'
I
-----------------------------
-
-
-
1-A-41
-
"""
Appendix Table 1-A-6 continued
------------t ----------LOCATION DATE TIME WSEL (ft) '.' DISCHARGE ( cfs) ------~
RIGRT BANK AT LRX 49 831103 1031 698.47 4,500
( 138 .3Ml AT R.M. 138.3) 831027 1240 698.59 5,020
831019 1149 699.80 8,010
831011 1107 700.23 9,520
830916 1147 700.65 10,500
830914 1445 700.69 10,700
831003 1200 701.35 13,000
830822 0950 703.50 21,600 -830805 1332 703.57 21,700
830701 1554 703.62 23,100
830808 1637 704.82 26,000
830706 0953 704.41 26,300 """' 830828 1504 704.42 26,600
830809 1647 705.64 29,900
830810 1616 705.52 31,900
----------------------------
-
-
-
-
1-A-42 ~I
,....
I
Appendix Table 1-A-6 continued
--------------------------------------LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ---------------
LEFT BANK AT LRX 50 831027 1235 701.22 5,020
(138.5Ml AT R.M. 138.5) 821012 1550 701.95 7,950 .... 831019 1146 702.13 8,010
831007 702.15 8,760
831011 1103 702.48 9,520
830916 1144 702.83 10,500 -830914 1411 702.93 10,700
821002 1620 703.01 11,700
820904 1415 703.97 14,400
820902 1210 704.39 16,000
820901 1906 704.88 17,900
830612 1630 704.79 20,000
820914 1515 705.22 20,200
830822 0957 704.93 21,600
830805 1329 705.11 21,700
830619 1008 705.19 23,000
820919 1531 705.57 24,100
830808 1633 705.97 26,000
830828 1502 705.65 26,600
820918 1912 705.82 26,800
830809 1643 706.57 29,900
830810 1619 706.51 31,900
-----------------------------------------
-
,....
I
-
-
1-A-43
Appendix Table 1-A-6 continued -
-----------------------------
LOCAUON DArE TIME WSEL (ft) DISCB.AllGE ( cfs). ----------~
LEFT BANK AT LRX 51 831103 1023 706 .so 4,500
(138.9M1 AT R.M. 138.9) 831027 1230 706.52 5,020
821012 1549 707.00 7,950 -831019 1140 707.04 8,010
831007 1604 707.17 8,760
831011 1100 707.29 9,520
830916 1151 707.68 10,500
830914 1419 707.72 10,700 ~
821003 1742 707 .68 11,000
821002 707.72 11,700
831003 1130 708.17 13,000
820909 1415 708.34 13,400 -820902 1205 708.73 16,000
830612 1545 709.43 20,000
820914 1512 709.47 20,200
830805 1326 709.91 21,700 -830619 1006 709.99 23,000
820919 1530 710.07 24,100
830808 1631 710.76 26,000
830828 1459 710.46 26,600 -830809 1643 711.52 29,900
830810 1621 711.49 31,900
----------------------------------------------
~
-
-
-
1-A-44
!"""
-I
I
I
l
""""
....
....
-I
....
I
Appendix Table 1-A-6 continued
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) ---
MAINSTEM AT SLOUGH 19 MOUTH 831103 1016 718.64 4,500
(140.0M2 AT R.M. 139.8) 831027 1220 718.83 5,020
821012 1548 719.13 7,950
831019 1136 719.45 8,010
831007 1600 719.46 8,760
831011 1055 719.61 9,520
830916 1154 720.08 10,500
821003 1740 719.91 11,000
820822 1400 720.33 12,200
820820 0910 720.31 12,500
820819 1020 720.43 13,300
820819 1734 720.47 13,300
820909 1330 720.59 13,400
820905 1530 720.52 13,600
820831 1825 721.00 16,000
820807 1000 721.03 16,500
820806. 1505 721.08 16,800
830529 1816 721.14 17,000
820901 1747 721.23 . 17,900
820708 1315 721.21 18,100
830721 1835 721.26 18,100
830612 1511 721.36 20,000
J 820914 1502 721.45 20,200
830804 1524 721.53 20,900
830822 1004 721.60 21,600
830616 1615 721.69 21,600
830805 1323 721.69 21,700
830823 1746 721.65 22,700
830619 1003 721.71 23,000
820711 1930 721.98 24,000
820919 1525 721 .7 5 24,100
830630 1754 721.80 24,700
830824 1315 721.94 24,700
830808 1629 722.36 26 ,000
830706 0945 722.08 26,300
820801 1706 721.96 26,400
830828 1455 722.01 26,600
830629 1706 722.03 26 ,800
820727 1310 722.44 29,100
830809 1620 722.76 29,900
820726 1245 722.61 31,800
830810 1624 722.59 31,900
820725 1140 722.67 31,900
820916 1530 722.92 32,500
---------------------------------------------------------------------
1-A-45
~
Appendix Table 1-A-6 continued
---------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) -----------
RIGHT BANK At LRX 53 831103 1010 720.86 4,500
(140.1M1 At R.M. 140.1) 831027 1215 721.01 5,020 """' 831019 1129 721.87 8,010
831011 1050 722.14 9.520
830916 1155 722.52 10,500
830913 1903 722.61 11,100
831003 1106 723.11 ~ 13,000 """'
830716 1200 723.60 16,400
830529 1426 723 .77 17,000
830721 1757 724.02 18,100
830715 1130 724.09 '--'18,600
830612 1500 724.19 20,000
830711 1155 724.20 20,000 .
830804 1454 724.42 20,900
830822 1007 724.46 21,600 l""l'l
830616 1526 724.54 21,600
830805 1320 724.58 21,700
830724 1100 724.80 22,700
830619 1001 724.57 23,000 _,
830701 1104 725.52 23,100
830824 1250 725.07 '\;24, 100
830702 1230 724.02 24,900
830808 1627 725.30 26,000
830706 0942 725.10 26,300
830828 1455 725.15 26,600
830828 1135 725.23 '· 26,600
830810 1704 725.88 \, 31,900 -----------------------------------
~
-
-
1-A-46
r
Appendix Table 1-A-6 continued
LOCATION
MAINSTEM AT SIDE CBANB. 21 MOUTH
(140.6Ml AT R.M. 140.6)
'-----------··---
DATE TIME
831103 1006
831027 1210
821012 1546
831019 1120
831007 1551
831011 1046
830916 1157
821003 1540
830912. 1024
831003 1051
830527 1315
830712 1425
830805 1310
830824 1239
830808 1625
830828 1453
830809 1219
830810 1626
----------
1-A-47
------------WSEL (ft) DISCHARGE (efs) --------
729.35 4,500
729.69 5,020.
729.99 7,950
730.09 8,010
730.04 8, 760
730.13 9,520
730.47 10,500
730.39 11,000
730.60 11,600
730.78 13,000
731.05 17,000
730.89 19,700
731.73 21,700
731.85 24,700
732.17 26,000
731.97 26,600
732.35 29,900
732.26 31,900
----------------
Appendix Table 1-A-6 continued ""''
LOCATION DATE tiME WSEL (ft) DISCHARGE ( cfs)
"""'
RIGHT BANK AT LllX 54 831103 1000 731.15 4,500
(140.8M1 AT R.M. 140.8} 831027 1205 731.36 5,020
831011 1042 732.42 9,520 -830916 1159 732.86 10,500
821003 1527 733.08 11,000
830912 1326 733.14 11,600
831003 1047 733.37 13,000
820831 1802 734.25 16,000 -
830527 1430 734.42 17 ,000
820901 1412 734.66 17.900
830721 1615 734.62 18,100
830712 1420 734.80 19,700 -820914 1400 734.90 20,200
830804 1328 735.05 20,900
830822 1011 735.06 21,600
830805 1234 735.23 21,700 """' 830619 0958 735.24 23,000
820919 1443 735.41 24,100
830630 0927 735.38 24,700
830824 1237 735.47 24,700 ~ 830808 1622 735.80 26 ,000
830706 0940 735.60 26,300
830828 1451 735.52 26,600
820918 1658 735.72 26,800
830809 1221 735.63 29.900 -830810 1630 736.24 31,900
830601 1742 736.30 33,000
-------------------~·
-
-
-
1-A-48
-I
r
-
-
-
r
....
r
I
r
Appendix Table 1-A-6 continued
LOCATION
RIGHT BANk AT LRX 55
(141.6M1 AT R.M. 141.6)
---
DATE TIME
83ll03 0956
831027 1155
831019 ll17
8310ll 1036
830916 1200
830913 1835
831003 1047
830527 1651
83072.1 1611
830612. 1402.
830804 1315
830822 1015
830805 1233
830619 0955
830630 0931
83082.4 12.07
830808 162.0
830706 0938
83082.8 1449
830809 122.8
830810 1632
------
1-A-49
---------WSEL (ft) DISCHARGE (cfs) -------
738.93 4,500
739.16 . 5,020
740.34 8,010
740.64 9,520
740.94 10,500
741.08 11,100
741.56 13,000
742.59 17,000
742..89 18,100
743.11 2.0,000
743.53 2.0,900
743.66 2.1,600
743.70 21,700
743.80 23,000
744.17 24,700
744.46 2.4, 700
744.68 2.6,000
744.60 2.6,300
744.50 26,600
745.30 29,900
745.45 31,900
------------
-
Appendiz Table 1-A-6 continued -
------
LOCATION DATE TIME WSEL (ft) DISCHARGE (cfs) -
RIGHT BANK AT LRX 56 831103 0950 750.09 4,500
(142.1M1 AT R.M. 142.1} 831027 1100 750.35 5,020
831019 1114 751.22 8,010
821011 1600 751.06 8,220
831011 1031 751.50 9,520
830916 1205 751.89 10,500
821003 1300 751.76 11,000
830913 1802 752.03 11,100 -821002 0950 751.96 11,700
821001 1110 752.07 12,400
831003 lOll 752.36 13,000
820909 1330 752.56 13,400 ~
820927 1500 752.48 13,800
820831 752.96 16,000
830529 1258 753.17 17,000
830721 1435 753.41 18,100
830612 1030 753.59 20,000
820914 1252 753.59 20,200
830822 1022 7 53.83 21,600
830803 1000 753.84· 21,600
830805 1231 753.94 21,700
830619 0952 753.94 23,000
820920 1230 754.06 24,000
820919 1319 754.09 24,100
830630 1157 754.13 24,700 ~
830824 1203 754.23 24,700
830808 1615 754.53 26 ,ODD
830706 0936 754.39 26,300
830828 1445 754.39 26,600 -820918 1600 754.33 26 ,BOD
820915 1602 754.94 28,200
830809 1542 755.09 29,900
830605 1700 754.59 30,000 -830605 1315 754.79 30,000
830810 1636 754.88 31,900
830601 1755 754.93 33,000
-----------------------------
-
1-A-50 -
r
r Appendiz Table 1-A-6 continued
-------------------
LOCATION DAtE TIME WSEL (ft) DISCHARGE ( cfs) --------
RIGHT BANK AT LRX 57 831103 0945 751.02 4,500
(142.0M2 AT R.M. 142.3) 831020 0820 752.40 7,230
831019 1110 752.54 8,010
831007 1419 753.14 8, 760
831011 1027 753.22 9,520
830913 1717 7 53.97 11,100
830912 1915 754.15 11,600
831003 0957 754.40 13,000
820909 1330 754.43 13,400
820813 0915 754.37 13,600
820831 755.07 16,000
820901 1257 755.47 17,900
820708 1615 7 55.66 18,100
8307 21 1430 7 55.68 18,100
830518 0928 755.72 20,000
830612 1040 755.81 20,000
820914 1248 755.79 20,200
830804 0940 756.16 20,900
820709 1250 7 56.31 21,500 r 830822 1024 7 56.45 21,600
830805 1230 7 56.31 21,700
820802 1450 756.24 22,500
820720 1535 756.31 22,900
830619 0950 756.34 23,000
820920 1214 756.48 24,000
820919 1317 756.45 24,100
830630 1205 756.61 24,700 -830824 1202 7 56.76 24,700
820728 1225 756.84 25,600
830706 0928 756.94 26,300
830828 1443 757 .07 26,600
820915 1604 7 57 .56 28,200
830809 1544 7 57.7 5 29,900
820726 1300 757.53 31,800
830810 1640 7 57.7 2 31,900
820725 1500 7 58.06 31,900
I""' 820916 1002 7 57.86 32,500
830601 1800 757 .59 33,000
------------------------------------------------
1-A-51
-
~I
Appendix Table 1-A-6 continued_ -
--------------------
LOCATION DATE TIME WSEL (ft) DISCBAB.GE (cfs)
""'' -----------
MAINSTEK AT SLOUGH 22 HEAD 831103 0938 783.92 4,500
(144.3M1 AT R.M. 144.7) 831027 1030 784.26 5,020
831019 1103 784.99 8,010 -831007 1409 785.10 8,760
831011 1021 785.27 9,520
830916 1213 785.80 10,500
820909 1330 786.60 13,400
"""' 820813 0855 786.69 13,600
820831 1115 787.07 16,000
820807 1215 787 .27 16,500
820901 1240 787.52 17,900
820708 1800 787.69 18,100
820914 1129 787.78 20,200
830805 1220 788.22 21,700
820802 1720 788.06 22,500
820720 1100 788.39 22,900 -820920 1125 788.40 24,000
820919 1038 788.37 24,100
830824 1006 788.66 24,700
830702 1552 788.62 24,900 ~
820728 1135 788.82 25,600
830606 0923 788.85 26,000
830828 1438 788.83 26,600
820918 1547 788.76 26,800 """'~ 820918 1400 788.85 26,800
820623 1735 788.90 27,000
820622 1615 789.48 31,000
820726 1315 789.57 31,800
830810 1649 789.72 31,900 -
----------------------------------------------------------
~
-
1-A-52
....
-
-
I""'
Appendix Table 1-A-6 continued
------·------------------·------LOCATION
LEF'r BANK AT LRX 61
(148.7M1 AT R.M. 148.7)
--------
DATE TIME
831103 0930
831027 1015
830916 1224
830915 1504
831003 0946
820909 1325
820904 1800
820709
820710 1600
830828 1428
820726 1500
1-A-53
--------------
WSEL (ft) DISCHARGE ( cfs) ------
832.03 4,500
832.36 5,020
833.78 10,500
833.81 10,600
834.33 13,000
834.25 13,400
834.45 14,400
836.09 21,500
836.20 23,000
836.69 26,600
837.00 31,800
Appendix !able 1-A-6 continued f"'f'
--------------------------------
LOCATION DATE TIME WSEL (ft) DISCHARGE ( cf&)
'"""' --------
LEFT BANK AT LRX 62 831103 0920 833.29 4,500
(148.9M1 AT R.M. 148.9) 831027 1000 833.60 5,020
821012 1532 7,950 -831019 1052 834.54 8,010
831011 1010 834.97 9,520
830916 1226 835.44 10,500
830915 1529 835.48 10,600 ~
831003 0943 836.08 13,000
820909 836.45 13,400
820909 1325 836.53 13,400
820904 1800 836".68 14,400 -820709 838.39 21.500
820919 1800 838.79 24,100
830824 1109 838.98 24,700
830828 1425 839.07 26,600 ---------------
-
. ~
-
1-A-54
Appu.du table 1-A-7 Comparison of non-mainstea vater surface elevations to ••an daily
mainst• discharge (cfs) obtained at the USGS gaging station at
Gold Creek (15292000).
r-LOC.A.'fiOII DA.TE TIME WSEL (ft) DISCIWtGE ( cfs)
WHISKERS SLOUGH (MOtrrH) 821009 1030 362.92 8,440
Cl01.2W1 AT B..M. 101.2) 830911 1020 363.48 12,200
820823 1126 363.44 11,300
820928 1715 363.64 12,900
831001 1500 363.80 13,200
820909 1500 363.67 13,400
820927 1605 363.85 13,800
820903 1550 363.97 14,600
. 820816 1715 364.03 15,600
830523 1130 364.36 18,000
830720 0915 364.41 18,600
830722 1850 364.43 18,600
830804 1330· 364.71 20,900
820709 1715 364.77 21,500
830822 1220 364.75 21,600
830805 1635 364.83 21,700
820617 1045 364.95 22,000
830621 1730 365.24 24,000
820920 1515 365.38. 24,000
830807 1400 365.31 25,000
830808 1925 365.61 26,000
830703 1645 365.21 26,200 ·-820726 1720 366.38 31,800
820621 1300 366.75 37,000
1-A-55
Appeadiz table 1-A-7 coati.Jmed -
LOCA'riOR DATE tiME WSEL (ft) DISCJWI.GE ( cf11)
~J
WlliSKEI.S SLOUGB ( Q SITE) 821009 1145 365.58 8,440
(101.283 At R.H. 101.4) 821006 1300 365.58 8,960
820908 1540 365.61 11,900 ~
820822 1353 365.56 12.,200
830911 0945 365.70 12.200
820928 1705 365.64 12,900
831003 1520 365.82 13.000
831001 1520 365.82 13,200 -820813 1355 365.61 13,600
820927 1550 365.68 13,800
820903 1550 365.65 14,600
820816 1445 365.81 15,600 ~-
830716 1130 365.70 16,400
830720 0930 365.70 18,600
830722 1840 365.72 18,600
830804 1345 365.77 20,900
-830822 1255 365.75 21,600
830618 1225 365.95 22,900
830619 1230 365.78 23,000
830617 1250 365.89 23,300
820920 1530 366.20 24,000
830621 1730 366.22 24,000
830807 1345 366.25 25,000
820715 1300 366.16 25,600
830808 1940 366.60 26 .ooo ~
830703 366.18 26,200
820622 0935 367.22 31,000
820621 1300 367.61 37,000
-
1-A-56
-
Appendix Table 1-A-7 continued
...,_ ----
WCA'IION DA'IE TIME WSEL (ft) DISCHARGE (cfa)
WHISKERS SLOUGH (BEAD) 830911 0930 366.48 : 12,200
(101.2R5 AT R.M. 101.5) 831001 1520 366.48 I 13,200
820904 1300 366.48 14,400
820903 1550 366.48 I 14,600
~ 820816 1445 366.48 I 15,600
830720 1100 366.48 I 18,600
830722 1830 366.48 I 18,600
830822 1300 367.77 21,600
830617 1800. 368.05 23,300
820920 1830 368.09 24,000
830807 1330 368.16 25,000
820715 1415 368.18 25,600
:-830808 1905 368.46 26,000
830703 368.14 26,200
820725 1040 368.89 31,900
!""" ------· ---
1/ Streambed elevation obtained from cross sectional profile.
1-A-57
-
AppenciU: Table 1-A-7 continued -
LOCATION DUE TIME WSEL {ft) DISCBA&GE ( c:fa) -
SLOUGH 6A (MOum) 831020 1500 455.00 7,230
(11Z.3W1 AT a.M. 112.3) 821009 1600 455.13 8,440
830915 1035 455.60 10,600
831004 1110 455.92 11,400
830912 1145 455.80 11,600
830930 1330 456.09 11,600
820822 1645 455.92 12,200 '""" 820820 1725 456.02 12,500
830908 1245 456.23 13,700
820926 1405 456.41 14,000
820910 1330 456.40 14,400
820925 1740 456.53 15,000 ~'
830528 1254 456.57 16,000
830528 1140 456.59 16,000
830716 1400 456.52 16,400
820807 1200 456.58 16,500
820808 1720 456.68 16,600
830523 1130 456.87 18,000
830722 1720 456.86 18,600
830718 1230 456 .so 18,900 -~'
830612 1250 456.95 20,000
820709 1850 457.20 21,500
830616 1030 457.06 21,600
830822 1655 457.22 21,600
830805 1130 457.14 21,700
830805 1510 457.20 21,700
820729 1445 457.46 23,600
820921 1000 457.63 24,200
830824 1630 457.50 24,700 ,-,'II',
830807 1530 457.52 25,000
830808 1735 457.75 26,000
830809 1500 458.02 29,900
830826 1530 458.13 31,700 ~
820917 1717 458.33 32,000
-
1-A-58
Appendix table 1-A-7 continued
LOCATIOR· n&.tE TIME WSEL (ft) DISCIWtGE (cfa)
SLOUGH 6A ( BACKWA'l'EB.) 830915 1038 455.47 10,600
(112.353 At a.M. 112.5) 831004 1105 455.78 11,400
830912 1050 455.66 11,600
830930 1330 455.93 11,600
830722 1700 456.68 18,600
830822 1700 457.08 21,600
830805 1200 457.03 21,700
830805 1520 457.07 21,700
830824 1630 457.43 24,700
830807 1530 457.36 25,000
830808 1738 457.62 26,000
-
r
-
1-A-59
-
A.ppeDdi:s: Table 1-A-7 CODtiDued
LOCATIOR DATE TID WSEL (ft) DISCJWtGE ( cfl)
SLOUGH 8 (MOUTH) 830912 1530 466.70 11,600
{113.6W8 AT R.M. 113.6) 830910 1130 466.96 12., 700
830716 1145 467.60 16,400 -830616 1540 468.70 21,600
830710 1203 468.76 22,200
830802 1200 468.74 22,400
830618 0945 468.96 22,900
830807 1630 469.24 25,000 ~
830808 1705 469.66 26,000
830825 1715 469.67 27,400
830809 1925 470.46 29,900
830826 1555 470.56 31,700
830810 1040 470.69 31,900
~
~I
~'
1-A-60 -·
-
-Appendix 7able 1~-7 continued
LOCATIO Ill Dl'r! TIME WSEL (ft) DISCUI.GE (cfa)
SLOUGH 8 (Q SitE) 830927 1230 467.97 9,640
(113.6S2 A7 &.H. 113.6) 821004 1235 468.24 10,500
831004 1230 468.01 11,400
830912 1600 467.94 11,600
830910 1200 467.95 12,700
820903 1456 468.28 14,600
820925 1110 468.35 15,000
830526 1110 468.05 16,000
830528 1005 468.05 16,000
830716 1150 467.97 16,400
830716 1430 467.98 16,400
830722 1730 468.15 18,600
830615 1745 468.40 19,600
830805 1450 468.70 21,700
830710 1141 468.76 22,200
830802 1200 468.77 22,400
820722 1010 468.80 22,400
830618 0945 468.98 22,900
820920 1329 469.41 24,000
820723 1010 469.15 24,900
830807 1630 469.23 25.000
830808 1711 469.66 26,000
830825 1710 470.58 27,400 -830809 1816 470.36 29,900
830826 1610 470.58 31,700
830810 1105 470.65 31,900
820917 1517 470.75 32,000 -I
r
11""' I,
1-A-61
· Appendix Table 1-A-7
LOCA'IION
SLOUGH 8 (BEAD)
(113.6H4 AT &.M. 113.6)
continued
DATE
820903
830716
830616
830802
820920
830808
830825
830809
830826
830810
820917
TIME
1215
1830
1145
1310
1700
1735
1810
1550
1020
1830
·-------WSEL (ft)
I 472.53 I
471.53
472.53 I
472.53 I
472.53 I
473.62
473.60
474.09
474.24
474.42
474.30
DISCBARGE (cfs) ------
14,600
16,400
21,600
22,400
24,400
26,000
27,400
29,900
31.700
31.900
32,000
------------------------------------------------------------
1/ Streambed elevation obtained from cross sectional profile.
1-A-62
-
-
-
-
-
-
Appendiz Table 1-A-7 c:outiDued
LOCA.TIOB D&TE TIME WSEL <ft) DISCBA.IGE (c:fa)
MAINSTEM 1 (MOU'l'l[) 831010 1410 473.59 7,130
(114.4W6 AT &.M. 114.4) 830918 1030 474.03 9,080
831004 1320 474.76 11,400
t• 830912 1305 475.01 13,600
830526 1800 475.68 16,000
830720 1300 476.18 18,600 -830611 1915 476.12 19,000
!' 830613 1315 476.31 19,900
830803 1230 476.69 11,600
830805 1430 476.63 11,700
F" 830618 1730 476.89 22,900
{ 830806 1931 476.95 23,800
830824 1450 477.06 24,700
830704 1700 476.78 24,800
830620 1530 477.37 15,000
830530 1600 477.47 25,000
830808 1121 477.17 26,000
830706 1150 477.16 26,300
830815 1120 477.38 27,400
~ 830826 1750 478.38 31,700
-
-1-A-63
-
Appendix 'fable 1-A-7 continued -
LOCAnOR DA'!E 'riME WSEL (ft) DISCBAB.GE ( cf 11)
-~1'
MAINSTEM 2 (l.owD BACD.&na) 830720 1305 476.17 18,600
(114.489 AT a.M. 114.5) 830612 1830 476.34 20,000
830805 1430 476.71 21,700
_,
830806 1932 477.03 23 .8oo
830824 1500 477.16 24,700
830704 1650 476.88 24,800
830808 1122 477.26 26,000
830706 1200 477.25 26,300
_,
830825 1115 477.49 27,400
830826 1750 478.55 31,700 -
-
1-A-64
-
-
-I
-
-
Appendix Table 1-A-7
LOCAnOR
MA.IRSTEM 1 ( UPP!ll BACKWArEB.)
(114.487 AT a.M. 114.8)
continued
DA.T!
830516
830710
830715
830611
830613
830611
830803
830805
830806
830824
830808
830825
830826
1-A-65
Till! WSEL (ft) DISCBAKGE (cfa)
1830 475.77 16,000
1305 476.06 18,600
1330 476.39 18,600
1930 476.19 19,000
1155 476.35 19,900
1830 476.40 20,000
1145 476.81 11.600
1435 476.74 11.700
1933 477.04 23,800
1530 477.31 14,700
1134 477.38 26,000
1115 477.58 '2.7,400
1755 478.70 31,700
Appendiz table 1-A-7 continued -
LOC'ATIOR DAtE tiME WSIL (ft) DISCBAJI.GE ( cfll) -
MAINS'rKM 2 NW CBANDI. (Q SitE) 830917 1025 478.84 10,000
(114.4S5 AT &.M. 115.4) 831004 1340 479.10 11,400
830526 1650 480.01 16,000 -830721 2000 480.50 18,100
830720 1430 480.61 18,600
830722 1405 480.64 18,600
830611 1520 480.56 19,000
830611 1830 480.66 19,000 -830615 1220 480.82 19,600
830805 1315 481.31 21,700
830806 1150 481.51 23 ,BOO
830806 1730 481.60 23 ,8oo -830824 1410 481.59 24,700
830530 1600 482.06 25,000
830808 1440 481.89 26,000
830825 1140 481.94 27,400 -830825 1300 481.97 27,400
-
1-A-66
Appendix Table 1-A-7 eontinuecl
LOCA.'l'IOR DAtE 'IIHE WSEL (ft) DISCIWlGE ( cfa)
MAIHSTEM 2 Ill CIWDIEL (RE.U>) 8309:l2 1804 481.95 13.600
(114.4B3 A'I R.M. 114.4) 830526 1530 482.42 16.000 -830721 1955 482.76 18.100
830722 1445 482.86 18,600
830720 1420 482.87 18.600
830611 1820 482.61 19.000 -83061) 1715 482.75 19.000
83080 . 1300 483.02 21.700
83080 1927 483.58 23.800
·830824 1400 483.68 24.700
830704 1630 483.21 24.800
830808 1119 483.82 26 .ooo
830706 1145 483.82 26.300
830826 1815 484.61 31.700
-
-
-1-A-67
Appendix Table 1-A-7 continued .. ,,
LOCA.TIOR DI.D TIME WSEL (ft) DISCJWI.GE ( cfa) ....
KAINSTEM 2 NE CBANNEL (Q SITE) 830917 1040 480.41 10,000
(114.488 AT a.M. 115.5) 831004 1450 480.48 11,400
830721 2000 480.44 18,100 """1
830720 1445 480.44 18,600
830722 1420 480.44 18,600
830805 1335 480.46 Zl,700
8306. 480.76 21,900 -8308 1900 480.57 23,800
8308214 1425 480.60 24,700
830704 480.54 24,800
830808 1530 481.28 26 .ooo
830825 1605 481.31 27,400 I""'
830826 1925 482.88 31,700 -
-
1-A-68
!'"" Appendix Table 1-A-7 continued
LOCATION DUE TIME WSEL {ft) DlSCBAI.GE ( cfa)
MAINSTEH % RE CBARREL (BlWl) 830526 1430 484.64 16,000
(114.4K1 AT a.M. 115.5) 830720 1245 484.64 18,600
830619 1025 484.54 23,000
830806 1915 484.72 23.800
830824 1350 484.84 24,700
830807 1445 485.00 25,000
830530 1430 485.08 25,000
830808 1115 485.05 26,000
830703 1230 484.93 26,200
830825 1135 485.23 27,400
'I""" 830827 1020 486.22 31,000
i,l 830826 1845 486.35 31,700 (i
1-A-69
-
-
Appendiz Table 1-A-7 continued -
LOCATION DA.'lE 'riME WSEL (ft) DlSCBAB.GE (cfa)
~~ ..
SLOUGH 8A (MOtrm-LEF'l' lWll:) 831010 1240 561.34 7,130
(125.3W5 AT R.M. 115.3) 830915 1435 561.64 10,600
830914 1155 561.47 15,200
"""" 830721 1100 561.70 18,100
830718 uoo 561.86 18,900
830719 1420 563.03 20,600
830804 1523 563.03 10,900
830803 1505 563.12 11,600 ~
830823 1055 563.11 21,700
830607 1430 563.40 23,000
830630 1220 563.36 24,700
830901 1630 563.53 15,400
830623 1000 563.54 15,400
830606 1700 563.58 16,000
830815 1118 563.63 27,400
830814 1345 563.75 17,400
830809 1040 563.98 29,900
830809 1405 564.01 29,900
830809 1730 564.11 29,900
830605 1005 564.05. 30,000 ""'1 830817 1115 564.11 31,000
830604 1750 564.68 36,000
830604 1000 564.76 36,000
-'
-
-
1-A-70
-
f"'"'
r--
-
!"""'
I
i
-I
i
-I
-
Appendiz Table 1-A-7
LOCATION
SLOUGH. SA (UPPEB. BACKWATEB.)
(125.386 AT B..M. 125.6)
coutiJWed
DATE
831020
830915
830909
830924
830924
830721
830718
830804
830803
830823
830902
830825
830814
830809
830809
830827
1-A-71
TIME WSEL (ft) DISCBAB.G! ( cfa)
1318 561.48 7,130
1440 561.65 10,600
1130 562.09 13,200
1214 562.42 15,200
1020 562.44 15,200
1120 562.69 18,100
1330 562.89 18,900
1523 563.04 20,900
1500 563.13 21,600
1100 563.19 22,700
1630 563.54 25,400
1205 563.64 27,400
1345 563.75 27,400
1045 563.84 29,900
1405 563.98 29,900
1110 564.09 31,000
-.~
Appendix Table 1-A-7 continued -
LOCATIO II DATE 'riHE WSEL (ft) DISCBAB.GE ( cfa) -
SLOUGH 8A LOWD Q SITE W .CJWni. 831020 1314 563.49 7,230
(125.3S4 AT a.M. 125.7) 830915 1450 563.49 10,600
831003 1310 563.68 13,000 ~
830909 1130 563.52 13,200
830924 1%24 563.60 15,200
830716 1900 563.53 16,400
830721 1430 563.51 18,100
"""' 830721 1515 563.51 18,100
830718 1700 563.51 18,900
830804" 1320 563.57 20,900
830725 1130 563.55 21,900
830823 1400 563.66 22,700 ~
830902 1830 563.68 25,400
830825 1158 563.71 27,400
830809 1103 563.97 . 29,900
830827 1427 564.14 31,000 -
-
1-A-72
-
"""'
-
--~
'
-
Appendiz Table 1-A-7 continued
IDCA.TIOR
SLOUGH 8A LOWD Q SITE E.ClWIR.
(125.385 AT R.H. 125.7)
D&.TE
831020
830915
830909
830924
830804
830823
830902
830825
830809
830827
1-A-73
TI!IE WSEL (ft) DISCJWlGE ( cfa)
1314 563.73. 7,230
1450 563.64 10,600
1350 563.70 13,200
1234 563.71 15,200
1400 563.61 20,900
1500 563.65 22.700
1700 563.81 25,400
1159 563.73 2.7,400
1100 564.01 29,900
1450 564.18 31,000
Appeudilt Table 1-A-7 continued ~11"5
LOCAfiON Da.TE TlHE WSEL (ft) DISCBAB.GE ( cfa) -
SLOUGH SA. RW CBI.RHEL (Q SI'r!) 830915 1515 566.01 10,600
(125.383 AT &.K. 125.3) 831003 1350 566.10 13,000
830909 1Z30 566.03 13 .zoo ""'* 830924 1246 566.08 15,200
830716 1800 566.11 16,400
830721 1150 566.00 18,100
830718 1920 566.00 18,900 _,
830804 1130 566.03 20,900 .
830823 1340 566.05 22,700
830809 1245 566.44 29,900
830827 1320 566.81 31,000
-
-
-
1-A-74
....
-I
-
-
r
-l
!"""
I
-i
-!
-!
Appendu table 1-A-7 continued
------
LOCAtiON DA'I'E 'l'IME WSEL (ft) DISCJWlGE (cfs)
SLOUGH SA NW CHANNEL (HEAD) 830823 573.11 I 22,700
(125.382 At R.M. 126.2) 830902 573.11 I 25,400
830825 1234 573.13 27,400
830809 1415 573.33 29,900
830827 U40 573.53 31,000
830531 1308 573.63 32,000
!/Streambed elevation obtained from cross sectional profile.
1-A-75
-
Appendix table 1~-7 contilwed -
LOCA.'J:IOB DU'E 'fiME WSEL (ft) DISCEWtGE ( cf a)· -
SLOUGH 8A NE ClW1REL (Q SitE) 830506 1330 565.91 5,400
(1l5.3S1 AT R.M. 1l5.8) 830915 1505 567.ll 10,600
830909 llOO 567.19 13,l00 -8309l4 1315 567 .l9 15,l00
830716 18l0 566.l0 16,400
83072.1 ll50 566.33 18,100
830615 1615 566.09 19.600 ~' 830711 1130 566.15 lO,OOO
830804 ll2.0 566.60 20,900
83082.3 1l10 566.97 2l,700
830630 1404 566.08 24,700
830809 1130 566.91 29.900
830827 1145 567.07 :n.ooo
,~,
-
1-A-76
!"""" Appendix table 1-A-7 CODtiuued
LOCI.. '!lOll DU'E 'riME WSEL (ft) DISCIWlGI ( ch)
SLOUGH 8A liE CBAlfiiEL 830719 1300 574.26 20,600
(125.3S8 AT &.M. 126.7) 830825 1253 574.77 27,400
830809 1430 574.71 29,900
830827 1140 574.81 31,000
-
-
-
-1-A-77
Appendix Table 1-A-7
LOCATION
SLOUGH SA NE CHAHKEL (HU.D}
(125.3H7 AT R.M. 126.9)
continued
DATE TIME
830719 1315
830815 1300
830809 1435
83082.7 1200
----WSEL (ft) DISCBARGE ( cfs)
577.06 I 20,600
577.06 I 27,400
577.06 I 29,900
577.06 I 31,000
------------------------------------------------------------------------
1/ Streambed elevation obtained from cross sectional profile.
1-A-78
-
-
-
....
-
-Appendix table 1-A-7 continued
LOCA'liOH ~n: TIME WSEL (ft) DISClWlGE ( cfl)
SLOUGH 9 (MOtrrB.) 831007 1100 . 589.86 8,760
( 128 .3W3 At i..M. 128.3) 831006 1500 589.86 9,800
830914 1100 589.81 10,700
830913 0700 589.86 11,100
830912 1020 589.90 11,600
830911 1100 589.97 12,200
830910 1020 590.07 12,700
830909 1045 590.18 13,200
830922 0900 590.03 13,600
830908 1800 590.33 13,700
830924 1000 590.98 15,200
830906 1600 16.000
830717 1115 591.04 16,500
830729 1638 591.32 17 ,300
830923 0930 591.32 17,500 -830923 1700 591.32 17,500
830728 1320 .591.47 17.700
830820 1120 591.31 17,800
830820 1600 591.41 17,800
r 830721 1830 591.47 18,100
I 830905 1900 591.33 18,200
830727 1000 591.64 18,500
830720 2230 591.24 1'8 ,600
~ 830821 1000 591.53 18,900
I 830821 1600 591.73 18,900
830614 1530 591.65 19,000
830730 1048 591.70 19,100
830819 1700. 591.60 19,200
830819 1030 591.63 19,200
830723 1830 591.81 19,200
830726 1130 591.78 19,400
830804 1000 592.10 20,900
830818 1530 592.03 21,000
830904 1200 592.03 21,000
830822 0950 592.08 21,600
830803 1930 592.13 21,600
830803 0926 592.24 21,600
830822 592.33 21,600
830725 1553 592.13 21,900
830725 1000 592.31 21,900
830823 1800 592.33 22,700
830823 1415 592.37 22,700
830817 1000 592.41 22,700
830731 1041 592.38 22,800
830830 1300 592.41 22,900
1-A-79
-
Appeuclix Table 1-A-7 continued.
LOCAnOR DA.'lE 'liME VSEL (ft) DISCBAB.GE ( cfs) --
SLOUGH 9 (MOlmi) 830615 1000 592.67 23,300
U18.3W3 AT B..M. 118.3) 830625 1805 592.73 23,300
(continued.) 830622 1824 592.83 23,600 ~.
830806 1005 592.53 23,800
830624 2200 592.73 24,000
830709 1000 592.63 24,300
830812 1200 592.71 24,500
830816 1030 592.72 24,600 """''
830824 0900 592.53 24,700
830630 1140 592.59 24.700
830630 1142 592.59 24,700
830824 2115 592.63 24,700
830824 1130 592.65 24,700
830831 1045 592.78 24,800
830702 1630 592.73 14,900
830807 1730 592.73 25,000 -830807 0930 592.83 25,000
830902 1615 592.93 25,400
830613 1748 593.02 25,400
830902 1100 593.03 -25,400 ~-830613 1345 593.12 25,400
830813 1130 593.08 25,900
830808 1030 592.93 26,000
830808 1850 593.23 26,000
830828 1536 593.48 26,600 ~
830815 1600 593.01 26,800
830815 1200 593.13 26,800
830815 0815 592.51 27,400
830825 1630 593.20 27,400
830814 1058 593.22 27,400
830708 1600 593.22 27,900
830809 1500 593.63 29,900
830809 1630 593.73 29,900
830809 1930 593.83 29,900
830827 1315 593 .07 31,000
830816 0745 593.58 31,700
830816 1830 593.83 31,700
830810 1400 593.81 31,900
830810 0915 593.90 31,900
830604 1800 594.07 36,000
830604 0913 594.21 36,000
""'~
1-A-80
-
-
!""' Appendix Table 1-A-7 continued
LOCATIOR DA.TE TIME WSEL (ft) DISCHAB.GE (c:fl)
SLOUGH 9 (Q SITE) 830914 0955 593.27 10,700
(128.351 AT a.M. 128.9) 830912 1200 593.29 11,600
831003 1515 593.50 13,000
8309%% 1820 593.30 13,600
830924 1550 593.33 15,200
830716 2200 593.27 16,400
830721 1800 593.36 18,100
830730 0927 593.37 19,100
830726 1730 593.44 19,400
830609 1030 593.56 19,400 .... 830712 0715 593.43 19,700 I'
830711 1715 593.46 20,000
830518 1334 593.81 20,000
8307%5 1600 593.65 21,900
I""" 830731 1444 593.93 22,800
830607 1830 594.10 23 .ooo
830630 1030 594.00 24,700
830824 1135 594.0.5 24,700
830825 1215 594.36 27,400
830605 2240 594.53 30,000
-
-
-
1-A-81
-
-
Appendiz table 1-A-7 continued ,.,,
LOCAUOB DAtE '!DIE WSEL (ft) DISCBA&GE ( ch)
SLOUGB 9 (BEAD) 830922 1900 603.70 13,600
( 128 .3B2 AT i..M. 129.3) 830924 1600 603.70 15,200
830820 1130 604.27 17 ,BOO ~ 830721 1850 604.45 18,100
830727 1500 604.51 18.500
830719 1815 604.58 20,600
830803 1805 604.71 21,600
830823 1750 604.71 22,700 -
-
-
-
,,.,.., Appendix Table 1-A-7 contiD.uecl
-LOCA.TIOR DATE TIME WSEL (ft) DISCBAB.GE (cfs)
SIDE CBARIIEL lOA 830913 1000 629.26 11.100
(132.181 AT R.N. 132.1) 830907 1115 629.83 14.800
830803 1301 630.35 21,600
830809 1015 631.33 29,900
-
~-
1-A-83
-
Appendix Table 1-A-7 continued !#ii;l ..
LOCATION DA.TE '1'IME WSEL (ft) DISCJWlGE ( c:f 1) -
SIDE CBANNEL 10 (MOutH) 830911 1520 649.81 12,200
(133.8W5 AT R.M. 133.8) 830906 1600 650.71 16,000
830717 1713 650.81 16,500 """" 830729 1840 651.01 17,300
830923 1040 651.06 17,500
830820 1200 651.00 17,800
830720 1656 651.10 18.600 -· 830803 1623 651.63 21,600
830710 1545 651.67 22,200
830724 1045 651.89 22.700
830731 1250 651.91 22,800
830622 1805 652.26 2.3,600
830806 1105 652.18 23,800
830624 1025 652.17 24,000
830624 1320 652.21 24,000
830813 1200 652.41 25,900 -· 830808 1152 652.31 26,000
830811 1255 652.51 27,700
830809 0850 653.29 29,900
830810 1000 653.31 31,900 ~~
-
1-A-84
Appendiz Table 1-A-7 continued
LOCATIO I ~'.rE 'l1HB WSEI. (ft) DISCHARGE ( cfa)
SIDE CBANBEL 10 830911 1333 650.29 12,200
(133.8S7 AT B..M. 133.9) 830910 1318 650.30 12,700
830909 1638 650.33 13,200
830729 1839 650.89 17,300
830823 1140 651.78 22,700
830724 1600 651.86 22,700
830731 1250 651.88 22,800
830806 1105 651.97 23,800
830810 1000 653.28 31,900
1-A-85
~,
Appendi.z Table 1-A-7 c:oa.tiDued
LOCATION IIA.D TIME WSEL (ft) DISCJWlGE ( c:fa) -'
SIDE CHANNEL 10 830911 1300 651.01 12,200
(133.851 AT B..M. 133.9) 830909 1633 651.06 13,200
830713 1600 651.17 19,100 ~
830723 1030 651.24 19,200
830609 1100 651.21 19,400
830804 1300 651.60 2.0. 900
830710 1600 651.67 22,200
830823 1154 651.83 22,700 ~
830724 1145 651.92 22,700
830607 1625 652..03 2.3 ,ODD
830829 1330 651.91 2.3.300
830622 1805 652.25 2.3,600 -830624 1035 652..18 2.4,000
830813 1220 652..53 25,900
830605 1343 652.91 30,000
830826 1145 653.54 31,700
830810 1010 653.48 31,900
830810 1110 ~ 653.53 31,900
~
~·
1-A-86
Appendiz table 1-A-7 continued
LOCATIOB DArE TillE WSEI. (ft) DISCUB.GE ( cfa)
SIDE CBANREL 10 830911 1230 651.94 12,200
(133.882 AT A.M. 134.0) 830910 1312 651.95 12,700
830909 1631 651.96 13,200
830713 1600 652.06 19,100
830723 1200 652.17 19,200
~ 830609 1230 652.16 19,400
830804 1300 652.43 20,900
830710 1643 652.46 2.2,200
830823 1208 652.69 22,700
8306(]7 1626 652.73 23,000
830829 1325 652..61 23,300
830829 1030 652.66 23,300
830813 12.20 653.06 25,900
830605 1405 653.36 30,000
830605 1407 653.36 30,000
830826 1350 653 .91 31,700
830810 0921 653.86 31,900
830810 1020 653.86 31,900
-
I
-
-
1-A-87
Appendix Table 1~-7 continued -~
LOc.t.noB M'l'E TIME WSEL (ft) DISCIWI.GE ( efa)
SIDE CllAHHEL 10 830910 1310 653.19 12,700
(l33.8S6 AT B..M. !34.1) 830909 1618 653.19 13,200
830823 12.09 654.31 2.2.,700 -830724 1340 654.35 22,700
830829 1320 654.35 23,300
830829 1115 654.41 23,300
~
-
-
1-A-88
Appeudix Table 1-A-7. CODti.Dued
LOCA.nOR D&.'D: !DIE WSEL (ft) DISCIWlGE (cfl).
SIDE CHANNEL 10 (Q SID) 830911 1115 654.27 12,200
(133.883 AT a.M. 134.2) 830910 1100 654.29 12,700
831003 .1215 654.30 13,000
830909 1622 654.29 13,200
830717 1100 654.30 16,500
830720 1630 654.43 18.600
830713 1600 654.50 19,100
830723 1200 654.74 19,200
830609 1200 654.62 19,400
830803 1745 655.15 21,600
830803 1703 655.18 21,600
830710 1719 655.21 22,200
830823 1330 655.54 22,700
830607 1645 655.73 23,000
830808 1310 656.27 26 .ooo
830629 1610 656.09 26,800
830605 1515 656.75 30,000
830826 1713 657.97 31,700
830810 1120 658.26 31,900
·.1'""' 830810
i 1233 658.26 31,900
-
-
1-A-89
Appe:ndiz Table 1-A-7 eontiDuec! -
LOCATION Dt.:TE TDIE WSEL (ft) DISCJWlGE ( efa )
SIDE CBAHREL 10 (BEAD) 830717 1030 656.20 16,500
(133.8B4 AT &.H. 134.2) 830720 1700 656.20 18,600
830730 1115 656.53 19,100
830613 1045 656.56 19,900
830803 1825 656.85 21,600
830710 1755 656.91 2.2,200
830823 1325 657.20 22.,700 ~
83072.4 1526 657.25 22,700
830731 1125 657.24 22,800
830622 1805 657.53 23,600
830623 1400 657.77 25,400
830808 1329 657.78 26,000 ~
830809 0846 658.53 29.900
-
-1-A-90
Appencliz table 1-A-7 continued
LOCAnOR DA.'l'E nMI WSEL (ft) DISCHAI.GE (cfa)
LOWER SIDE CBARREL 11 831019 1254 661.47 8,010 -(134.681 AT a.M. 135.0) 831011 1145 661.67 9,520
8309l2 661.82 13,600
830906 1610 661.82 16,000
830729 1713 662.10 17,300
830728 1340 662.27 17,700
830820 1200 662.10 17,800
830820 1205 662.12 17,800
830730 1119 662.32 19,100
830819 104.5 66l.3l 19,200 ,.... 830723 1722 662.37 19,200
I 830711 1400 662.27 20,000
830804 1245 662.47 20,900
830904 1237 662.52 21,000
"""" 830818 1620 662.53 21,000
830803 1740 662.52 21,600
830822 1535 662.74 21,600
830608 1205 662.57 22,000
830823 1400 662.62 22,700 r 830817 0945 662.82 22,700
830731 1131 662.87 22,800
830806 1030 662.82 23,800
830806 1258 662.83 23,800
~ 830624 1324 663.10 24,000
830812 1320 662.92 24,500
830816 1000 663.11 24,600
830831 1105 663.07 24,800
830902 1156 663.27 25,400
830808 1336 663.17 26,000
830808 1430 663.22 26,000
830828 0955 663.22 26,600
"""' 830815 1230 663.32 26,800
! 830825 1035 663.22 27,400
830809 1811 663.95 29,900
830827 1730 663.60 31,000
830827 1340 663.77 31,000
830826 0900 663.82 31,700
830810 1259 663.95 31,900
-,;
1-A-91
Appeuclu Table 1-A-7 CODtilllled -
· LOCA.tlOR DA.'I! TIHE WSEL (ft) DISClWlGE ( ch)
LOWEll SIDE ClWmEL 11 831019 1253 662.92 8,010
(134.6S2 AT R.M. 135.2) 831011 1145 663.42 9,520
830915 0930 66J.22 10,600
830922 663.62 13,600
830906 1610 663.67 16,000
830719 1713 663.87 17,300
830728 1915 663.80 17.700 """":
830820 1205 663.87 17,800
830820 1200 663.95 17,800
830730 1119 664.15 19,100
830819 1045 664.07 19,200 -830723 1724 664.12 19,200
830711 1400 664.15 20,000
830804 1250 664.23 20,900
830904 1238 664.22 21,000
830818 1620 664.27 21,000 ~~
830803 1740 664.27 21,600
830822 1535 664.35 21,600
830608 1203 664.29 22,000
830823 1403 664.48 22,700
830817 '0945 664.55 22,700
830731 1131 664.55 22,800
830806 1030 664.57 23,800
830806 1254 664.59 23,800
830624 1324 664.77 24,000
830812 1320 664.62 24,500
830816 1000 664.72 24,600
830831 1105 664.72 24,800
830902 1157 664.90 25.400 -830813 1255 664.87 25,900
830808 1336 664.82 26,000
830828 0958 664.87 26,600
830815 1235 664.92 26,800 -830825 1039 664.82 27,400
830811 1700 664.72 27,700
830809 1812 665.47 29,900
830827 1730 665.22 31,000 ·-830827 1343 665.27 31,000
830826 0900 665.42 31,700
830810 1259 665.42 31,900
-·
1-A-92
Appendix Table 1-A-7 c:outiuued
LOCAnoR Ill1'E TIHE WSEL (ft) DISCIWlGE (c:fa)
SIDE CIWUIEL B/L SLOUGH 11 MOU'rli 821012 1555 665.56 7,950
(135.3M4 AT B..M. 135.3) 821002 1040 666.68 11,700
820906 1600 666.86 12,200
820929 1830 666.81 12,400
820830 1740 667.46 13.100
820909 1420 667.36 13,400 ,.... 830906 1610 667.79 16,000
' 820831 668.16 16,000
830904 1238 668.69 21,000
830822 1730 669.79 21,600
830823 1414 669.95 22,700
830812 1320 669.14 24,500
830831 1105 669.24 24,800
830902 1159 669.44 25,400
830808 1338 669.45 26,000 !'""' 830808 1435 669.49 26,000
830828 0958 669.44 26,600
830825 1040 669.46 27,400
830825 1514 669.54 27,400
"""' 830825 0900 670.04 27,400 ,:
I 830809 1815 670.09 29,900
830827 1200 669.79 31,000
830827 1345 669.89 31,000
1""' 830826 0900 670.04 31,700
830810 1259 670.04 31,900
....
-
r 1-A-93
-
-
Appendi% Table 1-A-7 continued ~
LOCA.UOR DATE 'riME WSEL (ft) DISCBAB.GE ( cfa) """'
SIDE CBANHEL A/B SLOUGH 11 HDUTK 831027 1430 667.27 5,020
(135.3M2 AT R.M. 135.3) 821012 1555 667.50 7,950
830915 1807 667.78 10,600
820907 1820 668.10 11,700
820822 1535 667.92 12,200
831003 1350 667.89 13,000
820830 1735 668.62 13,100 ~
820909 142.0 668.55 13,400
830906 1610 668.55 16,000
82.0831 668.80 16,000
830729 1715 668.66 17,300 ""' 830728 1340 668.79 17,700
830820 1200 668.74 17,800
83072.1 1150 668.76 18,100
8307 2.7 1025 668.84 18,500
830718 102.5 668.91 18,900 """' 830730 112.0 668.91 19,100
830723 1735 668.91 19,200
830819 1045 668.94 19,2.00
830518 1318 668.91 2.0,000
830804 1300 669.08 2.0,900
830904 1238 669.06 2.1,000
830818 1625 669.11 2.1,000
83082.2 1535 669.16 2.1,600 ~
83072.5 . 1030 669.16 2.1,900
83072.4 1030 669.21 22.,700
830817 0945 669.36 2.2,700
830731 1131 669.2.9 2.2.,800
830618 162.0 669.2.3 2.2.,900 -
830812. 132.0 669.36 2.4,500
830816 1000 669.56 2.4,600
830831 1110 669.46 2.4,800
830902. 12.00 669.65 2.5,400 ~
830813 1300 669.70 2.5,900
82.062.4 102.0 669.75 2.6,000
83082.8 0958 669.66 2.6 ,600
83062.9 12.10 669.55 2.6,800
830815 1235 669.76 2.6,800
82.0714 12.10 669.67 2.7,300
83082.5 1042. 669.76 2.7,400
83082.5 1519 669.79 2.7,400
830810 1307 670.2.1 31,900 ~I
830810 0953 670.2.2. 31,900
830604 1430 670.70 36,000
~
1-A-94
-
Appendix Table 1-A-7 contiuued
-LOCA'l'IOR DATE TIME VSEL (ft) DISCIWlGE (cfa)
'
SLOUGB 11 (KOtml) 831020 1210 666.29 7,230 -(135.3W1 AT R.M. 135.3) 830915 1812 666.96 10,600
831004 1353 667.07 11,400
821002 1040 667.01 11,700
820907 1825 667.15 11,700
820906 1600 667.23 12,200
820822 1540 667.32 12,200
820830 1740 667.77 13,100
820813 1115 667.81 13,600
830922 1330 667.89 13,600
820812 0935 667.91 14,400
820811 1825 668.04 15,400
830906 1630 668.28 16,000
830728 1915 668.52 17.700
830820 1205 668.60 17,800
830718 1020 668.85 18,900
8307%3 1730 668.91 19,200
830518 1319 668.87 20,000
830804 1253 669.0.5 20,900 -830804 1255 669.05. 20,900
830823 1616 669.24 22,700
830618 1615 669.28 22,900
830806 1131 669.37 %3,800
830806 1320 669.37 Z3 ,800
820920 1026 669.41 24,000
830816 1000 669.47 24,600
820728 2030 669.37 25,600
830813 1310 669.69 25,900
820624 1020 669.72 26,000
830828 1000 669.64 26,600
830707 1120 669.75 27,200
820714 1210 669.67 27,300
830825 1045 669.72 27,400
830825 1515 669.75 27,400
830811 1100 669.82 27,700
8209'18 1026 669.71 28,600
830809 1100 669.92 29,900
830827 1200 670.02 31,000
830827 1730 670.02 31,000
830827 1347 670.13 31,000
820622 1045 670.16 31,000
830826 0900 670.20 31,700
830826 0905 670.20 31,700
830826 1800 670.28 31,700
830810 1309 670.22 31,900 ·-
1-A-95
Appendix table 1-A-7
LOCA.TIOR
SLOUGH 11 (HOll'rB)
(135.3W1 At &.M. 135.3)
830810
810611
1-A-96
'fDIE
0837
1040
WSEL (ft)
670.29
670.66
DISCBAB.GE (cfl)
31,900
37,000
-
-
~:
-
-
-
-Appeudiz table 1-A-7 coutiuued
-LOCATION DA."rE TIME VSEL (ft) DISCIWlGE ( cfl)
SLOUGH 11 ( Q SitE) 830505 1810 670.67 4,900
(135.3S6 AT a.M. 135.7) 830915 1751 670.67 10,600
821003 1513 670.77 11,000
831004 1340 670.67 11,400
821002 1100 670.76 11.700
82.092.9 1800 670.75 12.400
82.0830 1244 670.72 13,100
830922 1205 670.66 13,600
830524 1100 670.23 17.000
83052.4 1420 670.73 17,000 -830721 1110 670.72. 18,100
830718 1040 670.72 18,900
830609 1333 670.75 19,400
830803 1330 670.73 21,600 -830823 1524 670.73 22,700
830806 1155 670.73 23,800
830806 1330 670.73 23,800
830806 1500 670.73 23,800
"""'
82.0920 1300 670.80 2.4,000
I 82.0921 1130 670.80 24,200
I 830828 1030 670.75 2.6.600
83062.9 0950 670.76 26,800
820918 1010 670.80 2.6,800
"""' 830707 1145 670.76 2.7,200
830604 1045 670.85 36,000
.....
-
-
-
1-A-97
-
Appendix Table 1-A-7 continued
LOCATION DATE TIME WSEL (ft) DISCHARGE ( cfs) -----.
SLOUGH 11 (BEAD) 831004 1300 684.00 : 11,400
(135.3B3 AT R.H. 136.4) 820830 684.00 13.100
820813 1140 684.00 I 13.600
820812 0935 684.oo r 14,400
820811 1805 684.00 I 15,400
820716 1255 684.00 I 25,600 -
820918 1025 684.00 I 26,800
-----
1/ Streambed elevation obtained from cross sectional profile.
-
''''"
1-A-98
~
-
!""'
I
I
Appendiz Table 1-A-7 coati.Dued
LOCA.'.riOII
UPPEB. SID! CBABREL 11 (MOtml)
(136.2W3 At R.M. 136.2)
DI.TB
831004
830911
830910
830711
830725
830829
830824
830826
1-A-99
'!DIE WSEL (ft) DISCBAI.GE (de)
1258 676.84 11,400
1700 676.90 12,200
1730 677.01 12,700
1715 677.95 20,000
1257 678.31 2.1,900
1435 678.43 23,300
1605 678.31 24,700
1853 679.56 31,700
Appev.cliz 'table 1-A-7 coutinuecl
LOCA.TIOB DAD TIME WSEL (ft) DISCB.AB.GE (cfs)
~
UPPEI. SIDE ~L 11 831004 12.56 676.78 11,400
(136.284 AT I..K. 136.2) 830911 1655 676.91 12,200
830910 1730 677.01 12,700
830906 1720 677.41 16,000
830829 1545 678.45 23,300
830826 1851 679.65 31,700 -
-
1-A-100
....
~ Appendix table 1-A-7 couti.u.ued I I
I
~ LOCA.nOR Dl'l'E TIME WSEL (ft) DISCIWI.GE ( cfl)
UPPER SIDE CBARREL 11 831004 1247 677.68 11,400 ..... (136.2S5 At R.M. 136.3) 830911 1653 677.68 12,200
830910 1800 677.69 12,700
830906 1630 677.80 16,000
830824 1605 678.10 24.700
-
1-A-101
~
Appendix Table 1~-7 ~ontinuecl
I.OCA.'fiOII DA.'!E '!IHE WSEL (ft) DISClWtGE ( cfs)
~
UPPEll SIDE CBAliNEL 11 ( Q SI'!E) 830911 1745 680.63 12.,200
(136.2S1 ~ a.M. 136.5) 830721 0945 681.34 18,100
830727 1130 681.38 18,500
830720 0940 681.34 18,600
830821 1600 681.39 18.900
830712 1115 681.40 19,700
830725 1236 681.68 21,900
830823 681.77 21,700 -830701 1150 681.74 23,100
830806 1345 681.95 23.800
830808 1450 682.24 26,000
830808 1345 682..51 26 .ooo
830826 1835 681.93 31.700
830810 1438 682.87 31.900
830604 1300 683.44 36.000
-
-
-
1-A-102
Appendix Table 1-A-7 c:ontinued
~
I
I ------I WSEL (ft) DISCHARGE (c:fs) LOCATION DATE TIME
-UPPER SIDE CHANNEL 11 (BEAD) 684.50 I 831010 8,400
(136.282 AT R.M. 136.6) 830917 684.50 I 10,000
830906 1700 685.20 16,000
830729 1726 685.56 17 ,300
830821 1600 685.91 18,900
830730 1133 685.93 19,100
830731 1030 686.56 22,800
830806 1409 686.66 23,800
830824 0934 686.62 24,700
830808 1504 687.11 26,000
830707 1100 687.18 27,200
830826 1003 687.91 31,700
"""' 830826 1856 687.95 31,700
830810 1453 687.76 31,900
-~---------!
1/ Stream.ped elevation obtained from c:ross sec:tional profile.
r
I""'
'
1-A-103
-
-
Appencliz 'table 1-A-7 continued -
LOCAnON DAD 'riME WSEL Ut) DISCJWlGE ( cb)
~
SLOUGH 16B (MOU'rll) 820822 1445 696.32 12,200
(l38.0W1 AT R.K. 137.8) 820813 1035 696.34 13,600
820902 1130 696.34 16,000
830717 1210 696.36 16,500
830820 1355 696.34 17,800
830701 1200 697.27 23,100
820919 1641 697.52 24,100 -820915 1352 699.06 28,200
820725 1110 699.20 31,900
~
-
-
-
1-A-104
-
Appendiz Table 1-A-7 CODtinued
I.OCA.TIOR DATE TIME WSEI. (ft} DISCIWlG! (cfl)
SLOUGH 16B (Q SITE) 821002 1454 700.08 11,700
r" (138.055 AT a.M. 138.0) 820822 1500 700.05 12,200
831003 1200 700.11 13,000
820813 1040 700.07 13,600
820814 1722 700.18 13,600
820902 1140 700.10 16,000
830717 1215 700.06 16,500
830820 1315 700.10 17,800
830701 1650 700.28 23,100
820919 1617 700.58 24,100
f""'-820801 1551 700.85 26,400
820915 1412 701.69 28,200
1-A-105
Appendix !able 1-A-7
LOCATIOH
SLOUGH 16B (BEAD)
(138.0B3 AT a.M. 138.2)
continued
DATE
820813
820831
820914
830822
830701
820920
820919
820915
820725
----.
TIME WSEL (ft) --
1020 703.00 I
1900 703.00 I
1626 703.17
0954 703.23
1600 703.35
1310 703.55
1543 703.51
1252 704.50
1115 704.59
1/ Streambed elevation obtained from cross sectional profile.
1-A-106
-
-
-DISCBAB.GE (cfs) ---·---
13,600
16,000
20,200
21,600
23,100
24,000
24,100
28,200
31,900
-
-
-
-
,_ Appendiz Table 1-A-7 COD!:i.Dued
LOCA'!IOB I.V.D 'riHE WSEL (ft) DlSCIWI.GE ( cfa)
SLOUGH 19 (ACCESS) 831020 0920 718.56 7,230
(140.0W1 AT R.H. 139.7) 830914 1045 718.72 10,700
r-821002 1733 718.61 11,700
820820 0925 718.76 12.500
831003 1111 718.69 13,000
820819 1050 718.73 13,300
820905 1515 718.76 13,600
r' 820813 1015 718.85 13,600
820925 1150 719.02 15,000
820831 1832 719.43 16,000
820807 1000 719.69 16,500 -820806 1510 719.83 16,800
830529 1921 720.22 17 .ooo
820708 1300 720.16 18,100
830721 1855 720.35 18,100
~~ 830821 1430 720.13 18,900
830615 1610 721.09 19,600
820914 1507 720.60 20,200
830804 1543 720.88 20.900
830630 1650 721.11 24,700 r 820801 1656 722.20 26,400
830629 1625 721.37 26,800
820623 0940 721.79 27,000
820915 1550 721.97 28,200
r 820727 1315 721.55 29.100
830809 1606 722.08 29,900
830605 1300 721:79 30,000
820622 1110 721.28 31,000
820726 1245 7!1.88 31,800
820620 1910 722.18 33,000
820620 1110 722.30 33,000
-
1-A-107
"···------------------------
Appendiz table 1-A-7 contiJlUed -
LOCA'rlOR DATE 'rDIE WSEL (ft) DISCHAI.GE (cfa)
SLOUGH 19 (BELOW MOU!a) 830914 1028 719.10 10,700
(140.0S3 AT a.M. 139.5) 831003 1109 719.14 13,000
830529 1837 720.10 17,000
830721 1843 720.32 18,100
830804 1540 720.82 20,900
830616 1605 721.02 21,600
8308l3 1802 720.99 22.700
830630 1655 721.11 24,700 ~
830824 1338 721.37 24,700
830629 1630 721.44 26,800
830809 1639 722.27 29,900
830605 1300 721.94 30.000 ,.,.~~~.
-
1-A-108 -
-'
-
~
.....
I"""
I
-
Appeudix Table 1-A-7
LOCAnOR
SLOUGH 19 (Q SITE)
(140.084 AT a.M. 139.9)
continued
DAD
830914
830529
830721
830804
830823
830630
830824
830629
830809
1-A-109
TIME VSEL (ft) DISCBAKGE ( cb)
1110 720.04 10,700
1844 720.09 17,000
1833 720.29 18,100
1532 720.80 20,900
1806 720.97 22,700
1748 721.08 24,700
1323 721.34 24,700
1635 721.39 26,800
1632 722.25 29,900
-
Appendix Table l-A-7 continued
LOC&.nOR ·DA.'rl '!DIE WSEL (ft) DISCIL\B.GE (cfl) -
SLOUGH 20 (MOtrrB) 821010 1700 724.23 8,480
(140.1W4 AT R.M. 140.1) 830913 1910 724.18 11,100
820821 0935 724.16 12,200
820822 1330 724.16 12,200
820820 1850 724.20 12,500
820819 1950 724.22 13,300
830922 1445 724.27 13,600
820813 0920 724.29 13,600 -820905 1550 724.33 13,600
820831 1820 724.43 16,000
830716 1200 724.32 16,400
830529 1426 724.76 17,000 -820901 1500 724.57 17.900
830610 1100 724.55 18,000
830721 1758 724.60 18,100
830715 1915 724.51 18,600
830715 1130 724.61 18,600
830711 1152 724.78 20,000
820914 1420 724.82 20,200
830804 1507 724.97 20,900
830904 1340 724.88 21,000 -830616 1525 725.17 21,600
830724 1100 725.28 22,700
820711 1900 725.26 24,000
820920 l255 725.40 24,000 -830824 1252 725.53 24,700
830702 1430 725.43 24,900
830901 1130 725.52 25,400
83082! 1135 725.71 26,600
820918 1810 725.48 26,800 I""'
820724 uoo· 725.69 26,800
820623 0945 725.65 27,000
820619 725.90 28,000
820727 1125 726.04 29,100 -830809 1607 726.44 29,900
820622 1115 726.30 31,000
830810 1015 726.52 31,900
820916 1345 726.59 32,500 -
1-A-110
AppeDdiz table 1-A-7 continued
LOCAtiON DATE TillE WSEL (ft) DISCIIAI.GE ( c:fl)
SLOUGJI 20 (Q SitE) 821010 1730 726.89 8,480
(l40.1S5 At B..M. 140.2) 821003 1645 726.92 11,000
830913 1915 726.75 11,100
820820 1850 726.72 12,500
831003 1100 727 .oo 13,000
820813 0920 726.80 13,600
r 830922 1500 726.81 13,600
830716 1315 726.69 16,400
820807 1130 726.85 16,500
830529 1452 727.21 17,000
820901 1715 726.89 17,900
830721 1804 726.64 18,100
820804 1200 726.90 18,500
830715 1140 726.73 18,600
830711 1159 726.70 20,000
820914 1424 727.07 20,200
830804 1511 726.69 20,900
830616 1515 726.89 21,600
820802 1210 727.07 22,500
!""" 830701 1212 726.77 23,100
830824 1258 726.93 24,700
830828 1122 727.04 26,600
820724 1130 727.19 26,800 -820623 0950 727.17 27,000
820727 1125 727.50 29,100
830809 1606 727.65 29,900
820916 1415 728.15 32,500
1-A-111
-
-Appendix table 1-A-7 continued
------
LOCAnON DATE TIME WSEL (ft) DISCBAB.GE (cfs) ~\
SLOUGH 20 (BEAD) 820820 1145 730.50! 12,500
(140.1B3 AT lt.H. 140.6) 820901 1715 730.50 I 17,900 """
820914 1430 730.50 I 20,200
820709 1225 730.96 21,500
820802 1235 731.04 22,500
830724 1030 731.10 22,700 -830701 1000 731.00 23,100
820920 1240 731.08 24,000
820711 1800 731.26 24.000
820918 1712 731.39 26,800 ~I
820623 1010 731.77 27,000
820619 731.61 28,000
820915 1539 731.76 28,200
820727 1200 731.82 29,100 llf'lr!.
830809 1208 731.65 29,900
820916 1220 731.95 32,500
1/ Streambed elevation obtained from cross sectional profil~.
-
-
~!
-
1-A-112
il'
'
!"":' Appendix table 1-A-7 CODti.Jlued
LOCA'riO!l D&.D 'fDIE WSEL (ft) DISCIWlGE ( cfa)
SIDE CB.A.liNEL 21 (MOUTH.) 831020 0900 729.05 7,230
(140.6W1 At R.M. 140.6) 830912 1238 729.32 11,600
830527 1047 730.29 17,000
830804 1425 730.81 20,900
830616 1505 730.96 21,600
"""' 830822 1909 730.99 21,600
830630 1227 731.18 24,700
830809 1202 731.90 29,900
830601 1146 732.36 33,000
1-A-113
-
~.
-
-·
1-A-114 -
~
I"""·
......
'
-
~
.....
'
.-
-
Appeudu Table 1-A-7 coutiuued
LOCA.nDR
SIDE CBANREL 21 (LOWER Q SITE)
(140.654 AT R.M. 141.1)
DU'E
830914
830921
830913
830912
830911
830528
830721
830821
830713
830819
830804
830822
830725
830630
830824
830So7
830606
830606
830606
830809
830601
1-A-115
TIME WSEL (ft) DISCJWI.GE ( cfa)
1200 735.92 10,700
1600 735.93 11,000
1700 736.00 11,100
1524 736.11 12,200
1630 736.23 12,200
1544 736.77 16,000
1735 737.02 18,100
1430 737.04 18,900
1140 737.04 19,100
1130 737.06 19,200
1339 737.20 20,900
1707 737.29 21,600
1115 737.20 21,900
1430 737.36 24,700
737.53 24,700
1500 737.44 25,000
2230 737.41 26,000
1700 737.47 26,000
1330 737.48 26,000
1150 737.73 29,900
1737 738.21 33,000
Appencia Table 1-A-7 continued -!\
LOCA.no& DAtE TIME WSEI. (ft) DISCILUGE ( c:fa) -
SIDE CBANHEL 21 (MID CJWmEL) 830913 1410 742.73 11,100
(140.682 A'l' a.M. 141.6) 830527 1735 743.64 17,000
830721 1615 743.61 18,100
830819 1140 743.67 19,200
830612 1330 743.91 20,000
830804 1312 743.79 20,900
830822 1534 743.88 21,600
830630 1540 743.91 24,700 ~
830809 1557 744.57 29,900
830601 1732 744.75 33,000
~'
-
1-A-116
-
....
""""
I"""
I :
-
Appendix Table 1-.-7 eoutiuued
LOCA.nOR
SIDE CBARREL (AS)
(140.653 AT &.H. 140.6)
DAD 'tiHE WSEL (ft) DISCJWlGE (efl)
830912 1738 743.80 11,600
830528 1202 744.47 16.000
830803 1302 745.10 21,600
830822 1516 745.34 21.600
830630 0941 745.48 24,700
830601 1320 746.68 33,000
1-A-117
Appendi:z 'Iable 1-A.-7 continued
-----·---------·--------------------------------------· LOCATION
CHANNEL A6 ( UPPEB.)
(140.6H5 AT B..M. 141.9)
DATE
830912
830527
830803
830822
830630
830809
830605
830605
830810
830601
1250
1433
0953
1525
1710
1320
1029
1614
WSEL (ft)
748.05 :
748.05
748.40
748.47
748.64
749.39
749.02
749.12
749.52
749.40
1/ Streambed elevation obtained from cross sectional profile.
1-A-118
DISCBAB.GE ( cfs )
11,600
17 .ooo
21,600
21,600
24,700
29,900
30,000
30,000
31,900
33.000
-
-
-
-
-
-
-
,_
Appendiz Table 1-A-7 continued
-LOCAriOR DATE TIME WSEL (ft) DISCIWlGE ( ch}
CJIAlmEL A6 (UPPEJ.) 830912 748.05 11,600
r"'" (140.6B5 AT a.M. 141.9) 830527 ' 748.05 17,000
830803 1250 748.40 21,600
830822 1433 748.47 21,600
830630 0953 748.64 24,700
830809 1525 749.39 29,900
830605 1710 749.02 30,000
830605 1320 749.12 30,000
830810 1029 749.52 31,900
830601 1614 749.40 33,000
1-A-119
-
Appeudi.z Table 1-A-7 couti.Dued
LOCAno:s D&.D TIME WSEL (ft) DlSCJIAllGE ( c:fl )
SLOUGH 11 (MOUTH) 831010 0843 744.71 7,130
(141.0W5 AT R.M. 141.8) 830913 1600 744.71 11,100
830911 1755 744.70 11,600 ~
810821 1000 744.67 11,100
830911 1500 744.71 11.200
811001 1350 744.71 11.400
810820 1700 744G68 12,500 -820813 0925 744.70 13,600
820927 1645 744.75 13,800
820831 1612 744.69 16,000
820809 1335 744.72 17,000
8307 21 1543 744.70 18.100 -830517 1138 744.72 19,000
830819 1420 744.74 19,200
830712 1433 744.73 19.700
810914 1315 744.70 :zo ,:zoo ~
830520 1115 744.76 2.1,000
830822 1255 744.~5 21,600
830803 1013 744.76 21,600
830608 1630 744.76 22,000
8109%2 1111 744.82 22,300
820801 1400 744.82 22.500
820720 1850 744.76 22,900
820920 1225 744.92 24,000
820919 1225 744.89 24,100 -830630 1025 744.93 24,700
830807 1030 745.12 25,000
820728 1310 745.17 25,600
830828 1200 745.26 26,600 ~
820918 1415 745.22 26,800
820613 1040 745.34 27 ,000
830811 1310 745.30 17,700
830708 1045 745.58 27 ,900 ~.
830809 1423 746.08 29,900
830605 1630 745.52 30,000
830605 1330 745.66 30,000
820916 1134 746.59 32,500
830601 1604 746.33 33,000 -830601 1310 746.73 33,000
-
1-A-120
F' Appendiz '!:able 1-A-7 con tinned
I'"!" LOCAnOR DA'rE '1'IME WSEL (ft) DISCJWlGE ( cfl)
SLOUGH 11 (RiM CORSULT.AR'J:S) 830911 1758 741.45 11,600 -(141.0S7 AT a.M. 141.9) 830819 1420 741.47 19,.200
830804 1117 741.43 .20,900
830811 1.255 741.46 11,600
830807 1400 741.40 25,000
830828 1200 741.86 2.6,600
830825 0837 741.93 27,400
I 830811 1310 741.94 27.700
830708 1045 742.21 27,900
830809 1424 742.73 29,900 -
-j--,
I
-
1-A-121
~J
Appeudiz Table 1-A-7 CODtiDuecl
~
. LOCA'I'IOR DltE TIME WSEL (ft) DISCJWI.GE (cfa)
,lllll;liT'l"
SLOUGH 2.1 (Q SITE) 83042.8 1009 744.81 :2.,900
(142..056 AT a.M. 142.0) 830507 1210 744.86 5,800
830507 1256 744.88 5,800
830929 1009 744.81 9,400
821003 1319 744.96 11,000
830921 1215 745.00 11,000
830913 1634 745.02 11,100
830912. 1758 745.02 11,600 -821002. 1515 744.96 11,700
820906 1240 744.89 12,200
820820 1645 744.95 12,500
831003 1030 745.02 13,000
820927 1635 744.98 13,800
820831 1512 744.91 16,000
820809 1340 745.00 17,000
830711 1525 744.99 18,100 ~~ 820914 1310 744.92 20,200
830804 1113 745.00 20,900
830822 1352 745.07 21,600
820802 1400 744.99 22,500
820710 1800 744.93 22,900 -820920 1216 745.04 24,000
820919 1408 745.03 24,100
830630 1115 745.03 24,700
830831 1720 745.13 24,800
820728 1305 745.13 25,600
830828 1200 745.20 26,600
820918 1531 745.14 26,800
830825 0835 745.26 27,400
830811 1310 745.43 27,700
830708 1045 745.52 27,900
820915 1830 746.05 2.8,200
830809 1510 746.03 2.9,900
820725 1710 746.99 31,900 -820916 1020 746.52 32,500
830601 1346' 746.64 33,000
-
-
1-A-122 -
Appendix Table 1-A-7 continued
LOCATION DATE 'riME WSEL (ft) DISCBARGE ( cf s) --
SLOUGH 21 (RW BEAD) 820831 1500 754.64 I 16,000"
(142.0B3 A'r R.M. 142.2) 820709 1300 754.64 I 21,500
820802 1433 754.64 I 22,500
820720 1635 754.641 22,900
820711 1730 754.64 24,000
820728 1235 754.72 25,600
820918 1600 754.66 26,800
820623 1055 754.81 27,000
830809 1548 755.26 29,900
830605 1700 754.89 30,000
830605 1315 754.99 30,000
820622 1230 755.17 31,000
820725 1745 755.61 31,900
820916 1004 755.30 32,500
830601 1802 755.09 33,000
820620 755.40 33,000
-------. --------
1/ Streambed elevation obtained from cross sectional profile.
1-A-123
Appendix Table 1-A-7
LOCA'l'ION
SLOUGH 21 (NE BEAD)
(142.0Bl A'l' R.M. 142.3)
continued
DAl'E
820831
830518
820802
820920
820728
820915
830809
830605
820725
830810
820620
830601
TIME WSEL (ft)
1335 755.61 I
1100 755.61:
1449 755.61
1210 755.61:
1235 755.61
1604 7 56.76
1544 757.56
1300 757.20
1500 757.22
1639 757.52
757.22
1755 757.41
1/ Streambed elevation obtained from cross sectional profile.
1-A-124
-
DISCHARGE (cfs)
16,000
20,000
22,500
24,100
25,600
28,200
29,900
30,000
31,900
31.900
33,000
33,000
--
-
-
AppeDdiz 'rable 1-A-7 coa.ti.Jmed
LOC.\'liOB Dl.'r!! 'filii WSEL (ft) DISCIA&GB ( cb)
SLotJGJl 22 (1101l'Dl) 830915 1250 780.38 10,600
(144.3W3 A'r a.M. 144.2) 821003 1130 780.43 11,000 ,_ 820822 1200 780.41 12;200
820813 0900 780.47 13,600
820831 1155 780.61 16,000
820914 1203 780.64 20,200
820720 1435 780.73 22.900
820920 1145 780.85 24,000
820919 1223 780.85 24,100
820728 1205 781.14 15,600
820918 1S2S 781.12 26,800
820623 1730 781.19 27,000
82091~ 173S 781.84 28,200
-
1-A-125
-
-
Appadiz 'fable 1-A-7 ccmtilmed
I.OCA.nOR D&.'fl 'fDI! VSZL (ft) MSCBAKGE ( cfa) -SLOUG1l 22 (HID SLOIJG1l) 830915 1235 780.64 10,600
(144.384 AT 2.K. 144.5) 830909 1015 780.66 13.200
830716 1435 780.60 16,400
830727 1100 780.59 18.500
830701 1400 780.84 23.100
830824 1100 781.25 24.700
830702 781.22 24.900
830828 1015 781.63 26.600 -· 830809 1420 782.47 29.900
830809 1715 782.70 29.900
-
-
-
-
1-A-126
-Appncliz Table 1-A-7 CO'Iltimaed
LOCATIOR DAD 'riiii WSIL (ft) DliCBAGB ( cb)
SLOUGH %2 (Q SID) 830915 1229. 783.37 10,600
(144.386 AT &.H. 144.6) 820813 0900 783.36 13,600
830716 1445 783.24 16,400
830819 1220 783.53 19,200
8%0914 1141 783.63 20,200
82080% 1710 783.52 22,500 -820720 1415 783.58 22,900
820920 1130 783.89 24,000
820919 1217 783.84 24,100
830702 1632 784.04 24,900 ..,.. 820728 1145 784.26 25,600
820918 1424 784.30 26,800
820915 1640 785.08 28,200
-
1-A-127
-Appendix table 1-A-7 continued
---~lit
LOCATION DAtE TIME WSEL (ft) DISCHARGE ( cfs) -----
SLOUGH 22 (BEAD} 820813 0855 786.35 I 13,600 -(144.3B.2 A'I R.M. 144.7} 820831 1130 786.35 I 16.000
820708 1815 786.35 I 18,100
830805 1220 788.20 21.700
820802 1717 788.06 22.500
"""' 820720 1100 788.35 22,900
820920 1125 788.37 24,000
820919 1102 788.34 24,100
830824 1013 788.57 24.700 -820728 1140 788.78 25,600
810918 1410 788.79 26 .soo
820623 1735 788.88 %7 .ooo
820915 1634 789.46 28,200 -820622 1615 789.43 31.000
830810 1649 789.71 31 ;goo
------
1/ Streambed elevation obtained from c:.rosa aeetioua1 profile.
-
-
-
1-A-128
l ··::.
I ......
1'\)
\0
--)
Appendix Table 1-A-8 Comparison of water surface elevation (WSEL) and flow measurements at selected side
channel, slough and tributary study sites in the Talkeetna to Devil Canyon reach to
the mean daily Susitna River discharge recorded at Gold Creek, (USGS 15292000).
MEASURED MAINSTEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
WHISKERS SIDE SLOUGH 820816 1445 365.81 .2 15,600
(GAGE 101.2S3 AT R.M. 101.4) 820903 1625 365.65 .7 14,600
821009 1145 365.58 2.0 8,440
830618 1100 365.95 9.1 22,900
820920 1530 366.20 35.1 24,000
WHISKERS CREEK 830618 1145 366.06 9.8 22,900
(GAGE 101.2T2 AT R.M. 101.4) 820816 1700 366.37 16.9 15,600
821009 1145 366.51 31.8 8,440
820903 1550 366.87 54.7 14,600
820920 1615 367.91 142.5 24,000
UPLAND SLOUGH 6A 820921 1040 457.49 .6 24,200
(GAGE 112.3W1 AT R.M. 112.3) 830722 1545 457.00 8.9 18,600
0 830825 1120 458.13 45.9 27,400
LANE CREEK 830625 1455 475.53 10.8 23,300
(GAGE 113.6T7 AT R.M. 113.6) 830710 1050 475.46 11.0 22,200
820817 1425 475.79 27.5 15,100
830616 1130 475.77 32.1 21,600
830825 1725 475.68 32.2 27,400
820816 475.44 35.3 15,600
820902 475.79 51.7 16,000
820831 475.94 56.7 16,000
Appendix Table 1-A-8 (Continued)
MEASURED MAIN STEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
SIDE SLOUGH 8 820903 1456 468.28 2.0 14,600
(GAGE 113.6S2 AT R.M. 113.6) 830809 1815 470.41 6.7 29,900
820920 1333 469.41 9.9 . 24 ~000
830825 1620 470.58 10.0 27,400
820917 1517 470.75 20.7 32,000
MAINSTEM 2 SIDE CHANNEL-NW CHANNEL 830611 1745 480.64 352.0 19,000
(GAGE 114.4S5 AT R.M. 115.3) 830806 1150 481.53 958.0 23,800
830808 1215 481.92 1415.0 26,000
830825 1315 481.96 1608.0 27,400
.......
I
)> MAINSTEM 2 SIDE CHANNEL-NE CHANNEL 830721 2000 480.44 .2 18,100 I ...... (GAGE 114.4S8 AT R.M. 115.4) 830806 1820 480.57 .7 23,800 w
0 830825 1515 481.30 15.8 27,400
830808 1530 481.33 32.3 26,000
830826 1935 482.88 429.0 31,700
SIDE SLOUGH 8A-NE CHANNEL 830721 1250 568.53 2.7 18,100
(GAGE R&M STAGE AT R.M. 125.9) 830630 1404 568.60 3.8 24,700
830827 1145 568.75 5.4 31,000
830823 1145 568.70 6.6 22,700
830809 1130 568.91 19.5 29,900
SIDE SLOUGH 8A-NE CHANNEL 830721 1250 566.33 2.7 18,100
(GAGE 125.3S1 AT R.M. 125.9) 830630 1404 566.08 3.8 24,700
830827 1145 567.07 5.4 31,000
830823 1145 566.97 6.6 22,700
830809 1130 566.91 19.5 29,900
Appendix Table 1-A-8 (Continued)
~~EASURED MAINSTEM
rJSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs}
SIDE SLOUGH 8A-NW CHANNEL 830721 1150 566.00 .4 18,100
(GAGE 125.3$3 AT R.M. 125.9) 830823 1300 566.05 .8 22,700
830809 1245 566.46 13.4 29,900
830827 1315 566.81 43.6 31,000
SIDE SLOUGH 8A (LOWER PORTION) 830721 1515 563.51 4.2 18,100
(GAGE 125.3S4 AT R.M. 125.9) 830804 1325 563.57 5.4 20,900
830823 1400 563.66 9.0 22,700
830827 1420 564.14 45.5 31,000
~ SIDE SLOUGH 9 820825 593.51 1.7 13,400 I
)> (GAGE 128.3S1 AT R.M. 129.2) 820909 593.56 3.0 13,400 I
~ 830721 1745 593.36 5.6 18,100 w
1-' 830730 0930 593.37 7.8 19,100
820904 1430 593.37 8.0 14,400
820720 593.92 28.0 22,900
830630 1030 594.00 77.4 24,700
830607 1225 593.96 89.0 23,000
820715 594.10 108.0 25,600
820920 1520 594.15 148.0 24,000
820623 594.27 182.0 27,000
820918 1305 594.42 232.0 ''26 ,800
830809 1547 595.25 501.5 29,900
Appendix Table 1-A-8 (Continued)
MEASURED MAINSTEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
4TH OF JULY CREEK 830803 1450 624.46 2.2 21,600
(GAGE 131.1T1 AT R.M. 131.1) 830803 1015 624.47 3.6 21,600
830624 2030 624.94 10.5 24,000
830709 1430 624.70 13.3 24,300
830630 1750 624.80 16.4 24,700
820803 1625 625.35 38.3 19,800
830826 1025 625.15 51.5 31,700
SIDE CHANNEL 10 830911 1115 654.27 .2 12,200
I-' (GAGE 133.8S3 AT R.M. 134.2) 830717 1030 654.30 .6 16,500
I 830726 1530 654.72 8.0 19,400 );>o
I 830803 1745 655.15 31.6 21,600 I-' w 830724 1620 655.57 80.0 22,700 N 830629 1630 655.84 93.9 26,800
830808 1235 656.30 266.6 26,000
830810 1120 658.26 781.3 31,900
830826 1605 657.97 803.0 31,700
SIDE CHANNEL 10 830911 1155 651.94 .3 12,200
(GAGE 133.8S2 AT R.M. 134.2) 830826 1350 653.91 776.0 31,700
830810 0921 653.86 836.9 31,900
SIDE CHANNEL 10 830911 1300 651.01 .9 12,200
(GAGE 133.8S1 AT R.M. 134.2) 830826 1145 653.54 736.0 31,700
830810 ·1110 653.53 756.8 31,900
l
. J -l
Appendix Table 1-A-8 (Continued)
MEASURED MAINSTEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
LOWER SIDE CHANNEL 11 830929 1200 663.09 820.0 9,400
(GAGE 134.6S2 AT R.M. 134.6) 830915 0930 663.22 973.0 10,600
830711 1400 664.15 2790.0 20,000
830811 1700 664.72 4210.0 27,700
SIDE SLOUGH 11 830721 1020 670.72 2.0 18,100
(GAGE 135.3S6 AT R.M. 135. 7} 820830 1244 670.72 3.1 13,100
830629 1000 670.76 4.1 26,800
820918 1010 670.80 5.5 26,800
UPPER SIDE CHANNEL 11 830911 1715 680.63 .1 12,200
..... . (GAGE 136.2S1 AT R.M. 136.3) 680.95 12.0
I 830712 1145 681.35 54.0 19,700 )::>
.1 830720 0945 681.34 56.6 18,600 ,_.
w 830727 1130 681.38 59.6 18,500 w 830608 1550 681.63 110.0 22,000
830629 1255 682.13 335.0 26,800
830808 1400 682.24 403,0 26,000
830810 1346 682.87 735.6 31,900
830826 1745 682.93 777.5 31,700
GOLD CREEK 830806 1605 696.09 34.1 23,800
(GAGE 136.8T1 AT R.M. 136.7) 830827 1705 696.18 51.1 31,000
830629 1442 696.25 56.0 26,800
830808 1809 696.86 153.6 26,000
SIDE SLOUGH 168 820907 700.08 1.1 11,700
(GAGE 138.0S5 AT R.M. 138.0) 830701 1521 700.28 6.0 23,100
820919 1617 700.58 24.0 24,100
820801 1551 700.85 55.0 26,400
820915 1412 701.69 257.0 28,200
Appendix Table 1-A-8 (Continued)
MEASURED MAINSTEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
INDIAN RIVER 830728 1830 847.03 97.9 17,700
(GAGE 138.6T2 AT R.M. 138.6) 830712 1600 847~18 173.0 19,700
821007 4.75 178.0 8,640
830913 0900 847.28 242.0 11,100
820910 4.93 268.0 14,400
830827 1215 847.49 338.0 31,000
830705 1140 847.49 459.0 25,100
820921 5.76 930.0 24,200
UPLAND SLOUGH 19 830721 1755 720.29 .2 18,100
...... (GAGE 140.0S4 AT R.M. 139.8) 820819 1730 718.79 .4 13,300 I
~
I ...... SIDE SLOUGH 20 820820 1120 726.76 2.6 12,500 w
+:» (GAGE 140.1S5 AT R.M. 140.2) 830701 1230 726.77 5.7 23,100
820901 1643 726.89 11.6 17,900
820802 1220 727.07 16.5 22,500
820918 1825 727.35 44.8 26,800
820916 1415 728.15 158.8 32,500
WATERFALL CREEK 830701 1145 730.57 5.4 23,100
(GAGE 140.1T6 AT R.M. 140.3) 830616 1445 730.69 13.0 21,600
TRIBUTARY AT HEAD OF SLOUGH 20 820901 1540 730.20 .7 17,900
(GAGE 140.1T3 AT R.M. 140.6) 830701 1020 730.23 1.1 23,100
820918 1217 730.74 9.3 26,800
820916 1230 731.39 23.5 32,500
J.
-J
Appendix Table 1-A-8 (Continued)
MEASURED MAINSTEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
SIDE CHANNEL 21 830914 1325 736.08 23.0 10,700
(GAGE 140.6S4 AT R.M. 141.1) 830912 1540 736.11 56.1 11,600
830721 1644 737.02 337.6 18,100
830711 1440 737.06 431.0 20,000
830822 1558 737.31 614.0 21,600
830630 1430 737.36 655.2 24,700
830606 1900 737.54 776.0 26,000
830809 1007 737.73 1213.0 29,900
SIDE CHANNEL 21 830804 1200 744.49 3.8 20,900
f.-' (GAGE 140.6S7 AT R.M. 141.8) 820902 1710 744.30 5.0 16,000 I
j::. 820919 1220 744.59 10.0 24,100 . I
830630 1130 744.73 10.9 24,700 f.-'
w
01 830605 1500 745.33 74.0 30,000
820917 1540 745.80 157.0 32,000
830809 1315 746.08 332.0 29,900
SIDE SLOUGH 21 (MAIN CHANNEL) 820831 1518 744.90 3.3 16,000
(GAGE 142.0S6 AT R.M. 141.9) 830721 1500 744.99 3.3 18,100
830822 1307 745.07 4.1 21,600
820802 1400 744.93 5.0 22,500
830809 1430 746.03 36.9 29,900
820916 1024 746.52 59.2 32,500
830601 1346 746.57 70.0 33,000
SIDE SLOUGH 22 820919 1124 783.84 5.1 24,100
(GAGE 144.356 AT R.M. 144.6) 830702 1638 784.04 19.6 24,900
820918 1425 784.28 31.2 26,800
820915 1642 785.08 118.5 28,200
Appendix Table 1-A-8 (Continued)
MEASURED MAIN STEM
WSEL FLOW DISCHARGE
DATE TIME (ft) (cfs) (cfs)
PORTAGE CREEK 830730 1055 840.12 267.0 19,100
(GAGE 148.8T1 AT R.M. 148.9) 820610 840.52 434.0 26,000
830712 1300 840.44 477.0 19,700
820904 840.94 620.0 14,400
820805 840.98 666.0 17,400
830828 1225 840.94 789.0 26,600
830702 1214 841.33 1088.0 24,900
820708 841.93 1190.0 18,100
820915 842.17 2160.0 28,200
.......
I
;t:o
I .......
w
O'i
1 ~~ ~l 1 ~l .-·-~--~ } -~-J -~ -~ } -~ } -~ ~-~ -~ } l ) -J J -}
Appendix Table 1-A-9 Comparison of tributary water surface elevations to mean daily mainstem discharge
(cfs) obtained at the USGS gaging station at Gold Creek (USGS 15292000).
LOCATION DATE TIME WSEL (ft} DISCHARGE
CREEK (Q SITE) 821009 1145 366.51 8,440
(101.2T2 AT R.M. 101.4) 821006 1300 366.59 8,960
830911 0950 366.03 12,200
820903 1550 366.87 14,600
820920 1615 367.91 24,000
UPLAND SLOUGH 6A 820921 1040 457.49 .6 24,200
(GAGE 112,3W1 AT R.M. 112.3) 830722 1545 457.00 8.9 18,600
830825 1120 458.13 45.9 27,400
LANE CREEK 830625 1455 475.53 10.8 23,300
(GAGE 113.6T7 AT R.M. 113.6) 830710 1050 475.46 11.0 22,200
820817 1425 475.79 27.5 15,100
830616 1130 475.77 32.1 21,600
830825 1725 475.68 32.2 27,400
820816 475.44 35.3 15,600
820902 475.79 51.7 16,000
820831 475.94 56.7 16,000
I
Appendix Table 1-A-9
LOCATION
WHISKERS CREEK (Q SITE)
(101.2T2 AT R.M. 101.4)
......
I
J=o
I ...... w
00
LANE CREEK
(113.6T3 AT R.M. 113.6)
Comparfson of tributary water surface elevations to mean daily mainstem
discharge (cfs) obtained at the USGS gaging station at Gold Creek (15292000).
DATE TIME WSEL (ft) DISCHARGE (cfs)
821009 1145 366.51 8,440
821006 1300 366.59 8,960
830911 0950 366.03 12,200
820822 1400 366.21 12,200
820928 1715 366.84 12,900
820909 1315 366.39 13,400
820813 1405 366.48 14,600
820903 1550 366.87 14,600
820816 1700 366.37 15,600
820808 1930 366.12 16,600
830522 1500 366.50 19,000
830618 1225 366.06 22,900
820611 366.06 24,000
820920 1615 367.91 24,000
820715 1320 365.49 25,600
820622 0930 367.07 31,000
820725 1525 368.47 31,900
820621 1300 367.40 37,000
821004 1228 472.03 10,500
831004 1240 473.00 11,400
830912 1615 472.57 11,600
820909 1100 471.94 13,400
820926 1335 472.11 14,000
820910 1630 471.91 14,400
820903 1450 472.23 14,600
820925 1640 472.14 15,000
830528 1010 473.09 16,000
820808 1430 471.95 16,600
830820 1435 472.95 17,800
830721 1350 . 472.37 18,100
830715 1345 472.40 18,600
"I ~} 1 "CC ~ C"--c"l 1 -~~'~1 ---~ l J } J
Appendix Table 1-A-9 continued -
LOCATION DATE TIME WSEL {ft) DISCHARGE (cfs}
LANE CREEK (Continued) 830616 1115 472.75 21,600
830710 1100 472.43 22,200
830625 1500 472.55 23,300
830622 10~0 472.60 23,600
830807 1605 472.39 25,000
830808 1715 472.94 26,000
820917 1645 472.58 32,000
LANE CREEK (Q SITE) 831004 1240 475.93 11,400
(113.6T7 AT R.M. 113.6) 830912 1615 475.57 11,600
820817 1425 475.79 15,100
820816 475.44 15,400 .,_.. 820902 475.79 16,000 I
)::a 820831 475.94 16,000 I .,_.. 830721 1350 475.28 18,100 w
1.0 830715 1350 475.42 18,600
830616 1130 475.77 21,600
830710 1124 475.46 22,200
830625 1500 475.53 23,300
830807 1605 475.42 25,000
830808 1715 475.87 26,000
830825 1725 475.68 27,400
4TH OF JULY CREEK (Q SITE) 830912 1450 625.05 11,600
(131.1T1 AT R.M. 131.1} 820907 1745 625.29 11,700
820908 1345 625.24 11,900
820822 1315 624.99 12,200
821001 1524 625.53 12,400
830910 1108 625.15 12,700
820813 1220 625.18 13,600
820818 1805 625.18 14,200
820903 1130 625.81 14,600
Appendix Table 1-A-9 continued -
LOCATION DATE TIME WSEL {ft} DISCHARGE (cfs}
4TH OF JULY CREEK (Q SITE) continued 820811 1015 625.33 15,400
820902 1640 625.67 14,000
820810 1835 625.38 16,700
820924 1750 625.53 17,100
830923 1025 625.28 17,500
830703 1235 624.78 19,600
820803 1625 625.35 19,800
830804 1030 624.46 20,900
830709 1450 624.70 21,500
830803 1450 624.46 21,600
830803 1015 624.47 21,600
t-' 830823 1046 625.25 22,700 I ,. 820920 1030 626.28 24,000 I
t-' 820919 1026 626.28 24,100 -!=:>
0 830630 1750 624.80 24,700
820728 1625 625.52 25,600
830624 2030 624.94 26,000
830730 1400 624.50 26,400
830828 1557 625.08 26,600
830811 1000 625.32 27,700
830826 1024 625.16 11,700
820917 1050 626.17 32,000
GOLD CREEK 830914 1709 696.16 10,700
(136.8T1 AT R.M. 136.8) 830516 1420 696.19 17,000
830517 1415 696.24 19,000
830617 1840 696.55 23,300
830806 1542 696.09 23,800
830808 1850 696.86 26,000
830629 1442 696.25 26,800
830827 1705 696.18 31,000
J J .~ J J ' ~ l ~ J
l ' 1 . 1 l
Appendix Table 1-A-9 continued -
LOCATION DATE TIME WSEL (ft} DISCHARGE {cfs}
GOLD CREEK (PRESSURE/TEMPERATURE) 830914 1717 694.43 10,700
(136.8T2 AT R.M. 136.8) 830517 1415 694.32 19,000
830806 1542 694.39 23,800
830808 1850 695.09 26,000
INDIAN RIVER (PRESSURE/TEMPERATURE) 830721 1255 747.10 18,100
(138.6T1 AT R.M. 138.6) 830517 0938 747.99 19,000
830712 1600 747.18 19,700
830617 0856 747.80 23,300
830705 1140 747.51 25,100
1--' INDIAN RIVER 831019 1200 847.29 8,010 I
)::> (138.6T2 AT R.M. 138.6) 830913 0942 847.28 11 ,100 I
1--' 830913 0946 847.30 11,100 .j:::o
f-1 831003 1615 847.68 13,000
830728 847.03 17,700
830721 1255 847.10 18,100
830712 1600 847.18 19,700
830807 1315 847~22 25,000
83 1140 847.49 25,100
8308 1326 847.49 31,000
SLOUGH 20 (SMALL TRIBUTARY) 821003 1715 731.23 11,000
(140.1T3 AT R.M. 140.5) 820820 1145 730.16 12,500
820813 1005 730.19 13,600
830529 1612 730.38 17,000
820901 1540 730.20 17,900
830721 1817 730,17 18,100
820804 1220 730.04 18,500
820914 1447 730.52 20,200
Appendix Table 1-A-9 continued -
LOCATION DATE TIME WSEL ( ft) DISCHARGE (cfs)
SLOUGH 20 (SMALL TRIBUTARY) 830804 1441 730.20 20,900
continued 820802 1230 730.37 22,500
830701 1020 730.23 23 '100
820918 1217 730.74 26,800
820623 1015 730.61 27,000
820619 730.77 28,000
820727 1205 730.84 29,100
830809 1211 730.86 29,900
820622 1145 730.98 31,000
820916 1230 731.39 32,500 ......
I
)». WATERFALL CREEK (Q SITE) 830913 1916 730.56 11 '100 I ...... (140.1T6 AT R.M. 140.3} 831003 1103 730.72 13,000 -P
N 830716 1315 730.48 16,400
830529 1541 730.96 17,000
830721 1802 730.44 18,100
830715 1545 730.51 18,600
830804 1514 730.47 20,900
830616 1445 730.69 21,600
830701 1145 730.57 23,100
830824 1301 730.62 24,700
830828 1120 730.55 26,600
830809 1616 730.75 29,900
1 i j } .J f J l ~' .l t I
-
-!
~.
Appendix Table 1-A-10. Daily mean streamflow record for Gold Creek,
Alaska, 1983. River Mile 136.7, Tributary
River Mile 0.2
DATE DISCHARGE 1
(cfs)
830516
830517 69
830518 76
830519 74
830520 81
830521 95
830522 110
830523 102
830524 102
830525 104
830526 113
830527 116
830528 118
830529 149
830530 172
830531 238
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-143
Table 1-A-10 continued
DATE
830601
830602
830603
830604
830605
830606
830607
830608
830609
830610
830611
830612
830613
830614
830615
830616
830617
830618
830619
830620
830621
830622
830623
830624
830625
830626
830627
830628
830629
830630
DISCHARGE!
(cfs)
217
193
205
163
138
156
156
137
120
118
126
120
114
115
116
116
103
105
115
102
90
90
83
73
69
65
59
59
57
54
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-144
-
-
!"""
-i
-
I""'
!"""
r
Table 1-A-10 continued
DATE DISCHARGE 1
(cfs)
830701 53
830702 59
830703 51
830704 49
830705 47
830706 46
830707 43
830708 44
830709 40
830710 39
830711 36
830712 35
830713 39
830714 60
830715 50
830716 44
830717 42
830718 40
830719 36
830720 35
830721 33
830722 32
830723 36
830724 34
830725 32
830726 30
830727 29
830728 27
830729 26
830730 27
830731 30
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-145
Table 1-A-10 conti~ued
DATE DISCHARGE 1
(cfs)
830801. 27
830802 25
830803 24
830804 29
830805 40
830806 40
830807 37
830808 131
830809 200
830810 114
830811 83
830812 89
830813 114
830814 103
830815 84
830816 72
830817 65
830818 61
830819 56
830820 57
830821 79
830822 69
830823 64
830824 66
830825 60
830826 53
830827 52
830828 52
830829 50
830830 62
830831 84
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-146
-
~'
-·'
.-,
-·
~'
-
f""";
I
-
Table 1-A-10 continued
DATE
830901
830902
830903
830904
830905
830906
830907
830908
830909
830910
830911
830912
830913
830914
830915
830916
830917
830918
830919
830920
830921
830922
830923
830924
830925
830926
830927
830928
830929
830930
DISCHARGE 1
(cfs)
79
134
88
74
68
63
60
58
54
53
49
46
45
45
46
44
42
40
38
55
60
56
52
45
44
54
63
41
52
158
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-147
Table 1-A-10 continued
DATE
831001
831002
831003
831004
831005
DISCHARGE 1
(cfs)
157
114
87
76
1 Discharge is estimated from the regression equation for the Gold
Creek tributary streamflow/water depth rating curve.
1-A-148
-
-
-
-
-
-
.....
-
Appendix Table 1-A-11.
DATE
830517
830518
830519
830520
830521
830522
830523
830524
830525
830526
830527
830528
830529
830530
830531
Daily mean streamflow record for Indian River~
Alaska, 1983. River Mile 138.6, Tributary ·
River Mile 1.0
DISCHARGE 1
(cfs)
1,545
1,230
1,092
895
865
923
931
788
662
609
508
751
1,809
2,741
1 Discharge is estimated from the regression equation for the Indian
River streamflow/water depth rating curve.
1-A-149
Table 1-A-11 continued
DATE DISCHARGE 1
(cfs)
830601 2,019
830602 2,087
830603 3,137
830604 15389
830605 804
830606 966
830607 1,122
830608 975
830609 894
830610 840
830611 812
830612 768
830613 732
830614 700
830615 880
830616 941
830617 812
830618 768
830619 1,026
830620 1,138
830621 989
830622 1,101
830623 945
830624 754
830625 723
830626 668
830627 599
830628 608
830629 467
830630 448
1 Discharge is estimated from the regression equation for the Indian
River streamflow/water depth rating curve.
1-A-150
~-
-=
~·'f,
-·
~
-
-
-
Table 1-A-11 continued
-
1-A-151
Table 1-A-11 continued
DATE
830801
830802
830803
830804
830805
830806
830807
830808
830809
830810
830811
830812
830813
830814
830815
830816
830817
830818
830819
830820
830821
830822
830823
830824
830825
830826
830827
830828
830829
830830
830831
DISCHARGE 1
(cfs)
80
70
63
65
122
171
147
1,299
2,647
1,038
556
1,076
2,389
1,914
1,180
805
596
467
368
326
588
578
685
705
562
503
433
368
341
695
2,185
1 Discharge is estimated from the regression equation for the Indian
River streamflow/water depth rating curve.
1-A-152
,'l)ll;p"
-
-
-
~-
-
-
Table 1-A-11 continued
1 Discharge is estimated from the regression equation for the Indian
River streamflow/water depth rating curve.
1-A-153
Table 1-A-11 continued
DATE
831001
831002
831003
831004
831005
831006
831007
831008
831009
831010
831011
831012
831013
831014
831015
831016
831017
831018
831019
DISCHARGE 1
(cfs)
1,875
1,468
1,049
909
764
717
526
429
448
568
1 '714
1,573
1,115
759
654
546
485
434
1 Discharge is estimated from the.regression equation for the Indian
River streamflow/water depth rating curve.
1-A-154
-
-
-
-
r
I
-
Appendix Table 1-A-12.
DATE
830514
830515
830516
830517
830518
830519
830520
830521
830522
830523
830524
830525
830526
830527
830528
830529
830530
830531
Daily mean streamflow record for Portage Creek,
Alaska, 1983. River Mile 148.8, Tributary I
River Mile 0.1
DISCHARGE 1
(cfs)
621
721
766
794
712
695
699
679
737
700
632
622
590
581
895
1,587
1,729
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve.
1-A-155
Appendix Table 1-A-12 continued
DATE
830601
830602
830603
830604
830605
830606
830607
830608
830609
830610
830611
830612
830613
830614
830615
830616
830617
830618
830619
830620
830621
830622
830623
830624
830625
830626
830627
830628
830629
830630
DISCHARGE 1
(cfs)
1,395
1,399
1,902
1.370
855
968
1,052
1,043
902
809
851
885
904
912
999
1,083
1,013
984
1,167
1 '181
1,113
1,140
1,109
988
947
927
952
891
772
725
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve.
1-A-156
-
-
-
-
-
-
-
-
-
... ..
-
....
I""'
Table 1-A-12 continued
DATE
830701
830702
830703
830704
830705
830706
830707
830728
830729
830730
830731
DISCHARGE!
(cfs)
712
848
662
683
771
711
257
278
392
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve •
1-A-157
Table 1-A-12 continued
DATE
830801
830802
830803
830804
830805
830806
830807
830808
830809
830810
830811
830812
830813
830814
830815
830816
830817
830818
830819
830820
830821
830822
830823
830824
830825
830826
830827
830828
830829
830830
830831
DISCHARGE I
(cfs)
381
315
275
283
522
689
563
1,382
2,045
1,471
1,045
1,087
1,513
1,553
1,334
1,134
989
867
763
737
1,160
1,094
1,267
1,286
1,147
1,131
1,000
857
805
1,671
2,185
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve.
1-A-158
-
-
~.
-
·~
-
Table 1-A-12 continued
DATE
830901
830902
830903
830904
830905
830906
830907
830908
830909
830910
830911
830912
830913
830914
830915
830916
830917
830918
830919
830920
830921
830922
830923
830924
830925
830926
830927
830928
830929
830930
DISCHARGE 1
(cfs)
1,952
2,165
1,706
1,402
1,189
1,031
903
834
765
690
618
564
521
499
475
429
394
367
344
429
525
531
541
431
396
368
348
341
418
888
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve.
1-A-159
Table 1-A-12 continued
831001
831002
831003
831004
831005
831006
831007
831008
831009
831010
831011
831012
831013
831014
831015
831016
831017
831018
831019
875
793
699
616
570
552
473
421
444
476
768
735
612
531
490
444
424
389
1 Discharge is estimated from the regression equation for the Portage
Creek streamflow/water depth rating curve.
1-A-160
-
-
-
J
~~--------------------------------------------~---------------,
_J w
U)
;z:
t-o w w r....
CJ
UJ
M ...
_J w
U)
3:
NAJNSTEM AT WHISKERS SLOU~H HEAD ~
RN 101.5 _-d ~
GAGE 101.5N6 ~ VB
~: 4,500 ~ 0 ~ 16,400 cfs
WSEL = 10 -.1163 0 .2250 + 360
_!!:. < <
16,400-0 -26,600 cfs
WSEL = 10-.8024 0.3883 ~ 360
10 100
HAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
g~------~-----------------------------------------------------. NAJNSTEM AT WHISKERS SLOUGH MOUTH
RM 101.2
GAGE 101 . 2M4
~ --~~· 8 ~A --~ ~: < < ......-..... 4,500 _ Q -7,950 cfs
WSEL = 10-.0222 0.1061 + 360
_!!: < < 7,950 _ Q _ 26,600 cfs
WSEL ==-10-1,7024 0.5508 + 360
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
-j
Appendix Figure 1-A·l. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at Whiskers Slough head and mouth.
]
Appendix FiGure 1-A-2. Mainstem discharge (Provisional USGS 1983) versus ~ainstem water surface
elevation at Talkeetna Fishwheel Station and left bank at LRX 9.
J . J
]
......
I
)>
I , ....
..n . ....,
-~ i
.: ~.'
1 l ---] j ----~ l ~~ l -J j
2~------------------------------------------------------------
B r.....
l.l)
0 ..,. ..
d
Ul :z
_J
RIGHT BANK AT LRX lOG
RN 106. i -
GAGE 106. 4Ml
A: < < -7,230 _ Q _ 16,000 cfs
WSEL = 10-3.7610 0,9949 + 405
B:
16,000 ~ Q ~31,700 cfs
WSEL = 10-2.6355 Q.7666 + 405
10 MAINSTEM DISCHARGE AT GOLD CREEK t1000Cf5l
RIGHT BANK AT LRX lOB
RN 105.9
GAGE 105. 9M 1
~
:z 4,500 ~ Q ~ 31,700 cfs
WSEL = 10-.3554 Q,2694 + 395
10 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS)
100
100
1 --J
Appendix Figure 1-A-3. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at LRX lOB and right bank at LRX lOC.
-----~
6 ..
d
U)
:3::
~
lO q r
~:~----------------------------------------------------------~ LEFT BANK AT LftX 12
ftM 108. i
GAGE 10B.4M1
A:
-4,500 ~ Q S.t0,600 cfs
WSEL + 10-1.5724 Q.4678 + 420
B: .
-10,600 s Q ~ n.ooo cfs
WSEL :: 10-5,5891 Q1.4664 + 420 ~ 8~
\ ~A (
ao
f.: n.oo~ ~Q~31,700 cfs
. WSEL = 10-2,6179 Q,7449 + 420
HAINSTEM OISCHAR~E AT GOLD CREEK flOOOCfSl lOili
g:T------------------------------------------------------------, RIGHT BANK AT LRX 11 '
RN 106.7
GAGE 106. 7M1
-1
~ B ~ •• < < -4.soo -Q -7.230 cfs
A~
~
.
10
NO EQUATION DEVELOPED
!!: < < 7.230 - Q -31 8 700 cfs
WSEL = 10-1.9161 Q.6010 + 405
MftiNSTEM DISCHARGE AT GOLD GREEK (1000Gf5)
100
Appendix Figure 1-A-4. Mainstem discharge (Provisional USGS 1983} versus mainstem water surface
elevation at right bank at LRX 11 and left bank at lRX 12.
] .
--~1 _-' 1 l -cc:--cj --J l --J 1
lO 100
MAINSTEH DISCHARGE AT GOLD CREEK llOOOCfS)
Appendix Figure 1-A-5. Mainstem discharge (Prov-isional USGS 1983) versus mainstem water surface
elevation at Upland Slough 6A Mouth and left bank at LRX 16.
1 J
.......
I
~
I
:.....i
:;)
•J)
d
U1 ::z
2:~------------------------------------------------------------NAJNSTEN BELOW LANE CREEK NOUTH
RN 113. i
. ·~. GAGE 11 '3. iM6
/~~8
./A V ~: 4,500 $ Q ~ 1 ,no cfs
r'/ NO EQUATION DEVELOPED
B: < < 7,230-Q-31.700 cfs
WSEL = 10-.1 ,4820 Q.5274 + 460
10 MAINSTEH OISGHARSE AT GOLD CREEK llOOOGFSl 100
2:y---------------------------------------------~~-----------, RIGHT BANK AT LRX 18
RN ll3.0
GAGE 113. ONl
< < 4,500-Q-31.700 cfs
WSEL = l0-·8480 o·4024 t 455
10 MAINSTEN DISCHARGE AT GOLD GREEK HOOOCfSl
100
Appendix Figure 1-A-6. ~ainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at right bank at LRX 18 and mainstem below lane Creek Mouth.
-J
I-'
. I
;J::o
I
I-'
0'1 .......
... ..,
J
-·~
j
~~--------------------------------------------~--------------, MAlNSTEM ABOVE LANE CREEK MOUTH
RN 113.7
_J·
LJ
lll :z
GAGE 113. 7MS
4,soo $.o ~ 31,100 cts
WSEL; 10-1 •7979 o·~118 + 462
10 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
g~------------------------------------------------------------, NAlNSTEN AT LANE CREEK MOUTH
RN 113.6
GAGE 11 '3 • 6M9
~: < < 16,400 _ Q-17,800 cfs
NO EQUATION DEVELOPED
!!= < < 17 ,BOO -Q-31,700 cfs
WSEL • 10-4.0262 01.0222 + 465
. 10
J t
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS) 100
Appendix Figure 1-A-7. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at Lane Creek Mouth and abovd Lane Creek Mouth.
......
D
):o
I ......
0\
OJ
d
Ul :z
~·~~------------------------------------------------~------~ NAJNSTEH A/B MAINSIEN 2 NW HEAD
RN 115.5
GAGE 115. SMi
4,500 ~ 0 S 31,700 cfs
WSEL = 10-1.4576 0.5285 + 477
-. 10 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
9:~------------------------------------------------------------
-.
NAlNSIEN ABOVE NAINSTEM 2 MOUTH
RN 11 i. i
GAGE 111. iMl
A:
9,520 S 0 S. 18,600 cfs
WSEL = 10-,6714 0.3444 + 470
B· . < -18,600 ~ 0-31,700 cfs
WSEL = 10 -1.4909 0 .5349 + 470
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOGfS)
100
Appendix Figure 1-A-8. Mainstem discharge (Provisional USGS 1983) versu.s mainstem water surface
elevation above Mainstem 2 Side Channel Mouth and above Mainstem 2 Side
Channe.l NW head.
I
1-'
I
):>
I
1-'
0'1
1.0
1
~:~~~~~~~~~----------------------------------------~ RIGHT BANK AT LRX 24
f-o
·~
L....
m .....
111 ..
d
U1 ::r
f-o
LJ
(!::!
0 m
"'f" ..
RM 120.7
GAGE 120.7Ml
4,500 ~ Q ~ 31,000 cfs
D
WSEL = 10 -1.9159.0 .6127 + 518
1~------~--~--~~~~~~~------~------~~~~~~ 10 100 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
~~~~~~~~~~~~~~------------------------------~ MAlNSTEN A/B MRJNSTEN 2 NE HEAD
RM 115.9
GAGE 115. 9M2
~: < < 4,500 -Q-5,020 cfs
NO EQUATION DEVELOPED B: < < 5,020 -Q -10,600 cfs
WSEL = 10 -3.2233 0 .9325 + 480
C: - < < 10,600-0-31.700 cfs
WSEL = 10-2.3722 0.7211 + 480
lt---------~--~--~~--~~~------~------~~~~~ 10 100 ..
MRINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl i
Appendix Figure 1-A-9. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation above Mainstem 2 Side Channel NE head and the right ~ank at LRX 24.
~~------------------------------------------------------------
__) w
U)
:J:
t-o w
~
Ol
-t'
lO ..
_J w
(/)
~
SlOE CHANNEL AT SLOUGH BA MOUTH
RM 125.3
GAGE l25.3M4
15,200 S Q S 36 1 000 cfs
WSEL = 10-2.6174 0.7198 + 560
10 MAINSTEM DISG~ARGE AT GOLD CREEK (lOOOCfSl 100
g;~------------------------------------------------------------RJGHT BANK AT LRX 28
RN 124.1
GAGE 12-i.iMt ~
c~
A:
4,500 ~ Q :S 10,700 cfs ~B
WSEL = 10-3.3098 0.9767 + 549
B~ < -10,700 S: 0 -19 0 600 cfs
VA £• ::~:~ :·:·:::~.:7::: + ...
WSEL = 10-1.3233 0.5020 + 549
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
Appendix Figure 1-A-10. Ma1nstem (Provisional USGS 1983) versus mainstem water surface elevation
at the right bank at LRX 28 and at Side Slough 8A Mouth.
......
I
)::o
I ......
-.J ......
d
Ul ::z:
1
~:y-------------------------------------------------------------. NAINSTEM ABOVE SLOUGH 8A NE HEAD
RN 127.1
GAGE 125.3M6
10,500 ~ 0 ~ 31,000 cfs
WSEL = 10-1.1687 0.4650 + 575
10 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
B:y-----------------------------------------------~-------------84 ~Dv.
RIGHT BANK AT LRX 29
RM 126.1
GAGE 125.3M3
A:
7,950 ~ 0 ~ 16,400 cfs
WSEL = 10-5,3719 01.4276 + 567
B:
16,400 $. 0 i 36,000 cfs
WSEL = 10-2.1164 0,657? + 567
p
.·:l
f
10
MAINSTEM DISCHARGE AT GOLD CREEK tlOOOCfSJ
100
Appendix Figure 1-A-11. Mainstem discharge (Provisional USGS 1983) versus mainstem water:surface elevation
at the right bank at LRX 29 and above Slough SA NE head.
j -J
_J w
U) :z:
H w
f:!
CJ
Ol
li1 ...
~:~----------------------------------------------------------~ RIGHT BANK AT LRX 32
RN 129.7
GAGE l29.7M1
A: .
-4 8 500 ~ Q ~ 7 1 230 ·ch
WSEL = 10'1902 0,1619 + 600
B: < < -7 1 230-0-31 0900 cfs
WSEL; 10~·1881 o·1606 + 600
lo MAINSTEM DISCHARGE AT GOLD CREEK (1000CfSl iOO
s~--------------------------------------------~~------------RlGHT BANK AT LRX 31 ~-~
RN 128.7 y----
GAGE 12B.7M1 JB ~p--
< < 4.500-0-31,900 cfs
WSEL 10-.7895 0.3913 + 590
I
lO HAINSTEM DISCHARGE AT GOLO CREEK llOOOCfSl 100
Appendix Figure 1-A-12. Mainstem discharge (Provisional USGS 1983) versus r.1ainstem water surface
elevation at the right bank at LRX 31 and LRX ·32.
j
) .... 1
.......
I
):>
I .......
-....J
(_o.)
. --1
~
c:J ......
tO +
t
········-] 1 1 . "-]
~-~------------------~--------------------------------------~ RIGHT BANK AT LRX 3i
RN 130.5
GAGE 130.5Nl
4 1 500 5. Q S 31 1 900 cfs
~SEL = 10-.8126 Q.3865 + 610
10
MAINSTEM DISGHARQE AT GOLD CREEK llOOOCFSJ 100
~:~----------------------------------------------------------~ RIGHT BANK AT LRX J3
RN 130.1
GAGE 130. lt11
A:
-4,500 ~ Q S 7,230 cfs
WSEL = 10-3.5789 Q.9950 + 610
10 100
NAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS)
Appendix Figure 1-A-13. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at the right bank at LRX 33 and at the right bank at LRX 34.
-j
-J
2:y-----~----------------------------------------------------~ NA1NSTEM B/L 4TH or JULY GR
~ t....
0 .....
RN 131.1
GAGE 131.lt13
'f ~: < < 7,950-0 -19,900 cfs
~ WSEL = 10·0419 o·17 ~0 + 610
::z:
B:
19,900 < 0 < 32,000 cfs
WSEL = 10-2.4244 0.7464 + 610 -. 10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS) 100
g:y-~--------------------------------------------------------~ RlGHT BANK AT LRX 35
-.
RN 130.8
GAGE 130. 9t11
B: < < .. 7,230-0-32,000 cfs
WSEL = 10-1,6614 0.5702 + 613
10 100
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS)
Appendix Figure 1-A-14. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface elevation
at the right bank at LRX 35 and below the mouth of Fourth of July CreeL
.......
I
J>
I ....... ......
(J1
-)
2:y---------------------------------------------------------~ NAINSTEM AT SIDE CHANNEL 10 MOUTH
d
U1 :z
RN 133.8
GAGE l33.8M6
4,500 .$. Q S. 31 ,900 cfs
WSEL = 10-.2640 Q.2560 + 645
10 •
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
~:y-----------~--------------------------------------------~ LEfT BANK AT LRX 37
RN 131.8
GAGE 131. BM 1
D
D
lO
D
4,500 .$. Q S. 31,900 cfs
·WSEL = 10-2,3505 0 .6965 + 625
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
-----~
B
Appendix Figure 1-A-15. Mainstem dischar~e (Provisional USGS 1983) versus mainstem water surface
elevation at the left bank at LRX 37 and at Side Channel 10,mouth.
'
I
!::1
I , ......
.....
0)
f
d
U) ::z:
~:~------------------------------------~----------------------NAINSTEN AT SLOUGH 166 MOUTH
RN l:SB.O
GAGE 13B.OM2
p
~ ~
V aA ~: < <
' 4.soo -Q -13,600 cfs
WSEL ~ 10 ·2.5162 0 .7868 + 691
B· -· < < 13,600 -Q-31,900 cfs
WSEL = 10·1.6726 Q'5832 + 691
lD NAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
g:~------------------------------------------------------------LEFT BANK AT LRX iO
RM 134.3
GAGE 1Ji.3Ml
A: <
-4,500 ~ 0 -13~400 cfs
WSEL = 10 ·.1508 0 .2283
B: <
-13,400 $. 0 -32,000 cfs
WSEL = 10·.8866 Q.4039 + 650
lD
MAINSTEM DISCHARGE AT GOLD CREEK llOOOGfSl
100
Appendix Figure 1-A-16. Mainstem discharge (Provisonal USGS 1983) versus mainstem water surface
elevation at the left bank at LRX 40 and at Side Slough 168 mouth.
I-"
I;
)::o
I .......
....... .......
J ----..,
l
d
U1
;%
) ~. -;
~:~--------------------------------------------------------~ RIGHT BANK AT LRX i9
RM 13B.J
GAGE 1JB.3Ml
p
10
•
p
4 1 500 ~ Q ~ 31,900 cfs
WSEL ~ 10-3.0626 Q.8932 + 697
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl 100
~y-------------------~------------------------------------~ MAJNSTEM AT HEAD Of SLOUGH 16B
RM 136.3
GAGE 13B.OMi
< < 13.400-Q-31 1 900 cfs
WSEL = 10 -3.8702 0 t,0137 ~ joo
lO 100
MAINSTEM DISCHARGE AT GOLD CREEK ,llOOOCFSl
Appendix_ Figure 1-A-17. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at the mainstem at the head of Side Slough 168 and the right
bank at LRX 49.
1-'
I > I
1-' .......
_::a
t-o w
~
D
0
1',. ...
~~----------------------------------------------------------~ LEfT BANK AT LRX 51
RN 138.9
GAGE lJB.9Ml
10
A:
B:
4,500 0 5,020 cfs
NO EQUATION DEVELOPED
7,950 0 31,900 cfs
WSEL ; 10-3.0141 0.8520 + 705
100 MAINSTEM DISCHAR~E AT GOLD GREEK llOOOGfSl
2y-----------------------------------------------------------~
-,
LEfT BANK AT LRX 50
RN 138.5
GAGE 138. SMl
A:
5,020 Q 14,400 cfs
WSEL = 10-4.0651 01.1207 + 700
B:
10 MAINSTEM OISGHARGE AT GOLD CREEK llOOOGfSl
100
Appendix Figure 1-A-18. Mainstem discharge (Provisonal USGS 1983) versus mainstem water surface
elevation at the left bank at lRX 50 and the left bank lRX 51.
) -5
---} J J -~1 -l ---] , _____
1 J -J i
Appendix Figure 1-A-19. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at Upland Slough 19 mouth and the right bank at LRr 53.
I
!
]
.....
I
):>
I .....
00
0
~:~------------------------------------------------------------, RIGHT BANK AT LRX Si
RN HO.B
GAGE HO.BMl
~ ~
. ~ ~~8
V A,;~ A:
- < < ' 4,500 _ 0 -18,100 cfs
.. WSEL "' 10-3.5487 0 .9926 + 730
B:
18.100 ~ 0 ~ 33,000 cfs
WSEL = 10-1.4008 04862 + 730
lO
MAINSTEM DISCHARGE AT GOLD GREEK llOOOGFSl
100
~:~-------------------------------------------------------------------, NAJNSTEM AT SIDE CHANN. 21 MOUTH
RM H0.6
GAGE 140. SM 1
< < 4,500 -Q -31,900 cfs
WSEL = 10-.3282 0,2642 + i2S
lO
MAINSTEM DISCHARGE AT GO~D CREEK llOOOGFSl
100
Appendix Figure 1-A-20. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at Side Channel 21 mouth and the right bank at lRX 54.
. J
l
.~
I
)::>
I .......
00 .......
--,_ ] ~---<', 1 l
d
1.11 ::z
---] } ---l l -' 1
~~----------------------------------------------------------~ R1GHT BANK AT LRX 56
RN 142.1
GAGE l42.1Hl
10
B:
17,000 ~0 ~33,000 cfs
WSEL = 10·1.2568 0.4665 + 748
MRINSTEH OISGHARQE RT GOLD CREEK llOOOCfSl
100
9~------------------------------------------------------------, RIGHT BANK AT LRX 55
RN 141.6
GAGE 141. 6M 1
B:
10
4,500 S. Q 'f. 8,010 cfs
WSEL = 10 -3.1675 0 .9457 + 737
< < 8,010-0 -31,900 cfs
WSEL = 10·2.2384 0.7053 + 737
MRINSTEM DISCHARGE AT GOLO CREEK UOOOCfSl
100
Appendix Figure 1-A-21. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at the right bank at LRX 55 and the right bank at LRX 56.
......
I
);:>
I ......
00
N
~~----------------------------------------------------------, NAJNSTEM AT SLOUGH 22 HEAD
RN 144.7
GAGE Hi. 3t11
1,. '100 ~ 0 S. 31,900 cfs
W~EL = 10-2.1943 0.6663 + 762
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
BOO
g~----------------------------------------------------------, RlGHT BANK AT LRX 57
RN 142. J
GAGE 142. OM2
10
A: , -.... <: 4,500-Q -11 ;600 cfs
WSEL • 10-3.2837 Q;9845 + 749
_!!:
11,6005 Q ~ 33,000 cfs·
WSEL = 10-1.4925 0 .5414 + 749
MAINST[M DISCHARGE AT GOLD CREEK llOOOGfSJ
100
Appendix Figure l·A-22. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at the right bank at LRX 57 and at the mainstem at Side Slough 22
head. ·
......
I
):::1
I ......
CIJ w
~.~------------------------------------~--------------------
1-1
f::l
L..
CJ
M
Q)
+
LEfT BANK AT tRX 62
RN 148.9
GAGE 148. 9Nl
4;500 5 Q 5 26,600 cfs
WSEL = 10-1,6119 0.5839 + 830
lD MAINSTEN DISCHARGE AT SOLD GREEK llOOOGfS)
UlO
g~~--------------------------------------------------------~ LEfT BANK AT LRX 61
RN 148.7
GAGE 148. 7Ml
A:
4,500 5 Q 5 5 1 020 cfs
NO EQUATION DEVELOPED
B· . < -5,020 ~ Q -31 ,BOO cfs
WSEL = 10-1.8863 0.6118 + 830
to MAINSTEN DISCHARGE AT GOLD CREEK (1000Cf5)
JOO
Appendix Figure 1-A-23. Mainstem discharge (Provisional USGS 1983) versus mainstem water surface
elevation at the left bank at LRX 61 and theleft bank at LRX 62.
.. J .. J
.......
I
);:.
I ....... co .p.
. . }
g:~~~~--------------------------------------------------~ WHISKERS SLOUGH (NOUTHl
__]
RN 101.2
GAGE 101. 2H 1
~ BACKWATER :z
8440 ~ 0 :f. 37 ,000 cfs
WSEL = 10-1.8135 0.5774 + 360
10 NAINSTEM OISGHARGE AT GOLD CREEK llOOOGfSl
IOD
Appendix Figure 1-A-24 Non-mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at ~~hiskers Slough ~1outh and discharge site .
J
........
I
)::o
I
........
co
()1
-1 --1
2
WHISKERS SLOUGH lHEADl
RM 101.5
GAGE 101.2H5
....
LJ
LJ t.... / Ul co
t'1 ..
_J BREACHED LJ
!:2 21,600 ~ Q ~ 31,900 cfs
WSEL-10-3.1622 0 .8330 -+ 365
-l 10 100
MAINSTEM DISCHARGE AT GOLD GREEK UOOOGfSl
Appendix Figure 1-A-25 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface ~levation at Whiskers Slough head.
-1
~
I
)>
I
~
();)
0"1
~
SLOUGH fiR !BACKWATER)
RN 112. 5
GAGE 112. 353
f-o w w
r.......
0
LJ)
'<t'
+
_J BACKWATER w
(/')
:z: 1o,6oo 5o ~31,1oo cfs
WSEL = 10-.5817 0.3301 + 450
I 10 J[J[J
MAINSTEM DISCHARGE AT GOLD CREEK I lOOOCFSl
~
SLOUGH 6A (MOUTHl
RM 112.3
GAGE 112.3Wl
t-< w w
r.......
0
LJ)
"t' + -
_J BACKWATER
w
(/') 7,23o:::o5 32,000 cfs :z:
WSEL = 10-.5840 0.3328 + 450
-l 10 J[)[J
MAINSTEM DISCHARGE AT GOLD CREEK ( lOOOCFSl
Appendix Figure 1-A-26. Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 6A mouth and backwater.
-1 ~ .. 1
Appendix Figure 1-A-27. Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 8 mouth and discharge site.
j
......
I
)::.
I ...... co co
~~~~~~--------------------------------------------------~ NAINSTEM 2 lMOUTHl
RN 111.4
GAGE 114.4H6
rj BACKWATER
U')
:z: 7,23oSo~31,7oo ct.s
E-w w
[._
Cl
f-...
""" +
WSEL = 10-1.5806 Q.5539 + 470
10 100 MAINSTEM DISCHARGE AT GOLD CREEK !lOOOCfSl
9~~~~~~~------------------------------------------------SLOUGH 8 £HEAD)
RN 113.6
GAGE 113. 6H4
A:
B:
NOT BREACHED
o< 24,000 cfs
NO EQUATION DEVELOPED
BREACHED
< < 24,000-0-32,000 cfs
WSEL = 10 -6.4606 01.5779 + 470
!~----------~------~~~~~------~--~----~~~--~ w 100
MAINSTEM DISCHARGE AT GOLD CREEK (lOOOCfSl
Appendix Figure 1-A-28. Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 8 head and Mainstem 2 mouth.
...... ] ---,
100
100
Appendix Figure 1-A-29 Non-Mainstem discharge (Provisional USGS 1983) versus the water surface
elevation at Mainstem 2 lower backwate'r and upper backwater.
. J .. -J ---}
~
..... w w c.....
0
CD ...,..
+
...J w
UJ
:l:
-~
I-'
I
)::> ~ 1.
I-'
U)
0
t-o w w c.....
Ln
I'-. ..,..
+
...J w
U1 ::z
-~
MAJNSJEM 2 NW CHANNEL !HEAD!
RN 114.4
GAGE 114. 4H3
BREACHED
< < 13,600-0-31,700 cfs
WSEL = 10-3.6417 0.9550 + 480
10 HAINSTEN DISCHARGE AT GOLD CREEK ClOOOCfSI 100
NAINSJEN 2 NW CHANNEL 10 SJTEI
RM 115.4
GAGE 114. 455
CONTROLLED
10,000~0~27,400 cfs
WSEL = 10-1.9012 0.6205 + 475
10 JOD
HAINSTEH DISCHARGE AT GOLD CREEK !lOOOCfSl
Figure 1-A-30. Non-Mainstern discharge (Provisional USGS 1983) versus
the water surface elevation at Mainstern 2 NW Channel
discharge site and head .
. J
--·-} ) ~-~, ~--1 ~---} .q-~ l ' 'l l --1 ------] h-----1 -1
--
10 100
MAINSTEM DISCHARGE AT GOLO CREEK (lOOOCfSl
Appendix Figure 1-A-31 Non-Mainstem discharge (Provisional USGS 1983) versus the water surface
elevation at Mainstem 2 NE Channel discharge site and head.
] l -}
J
Appendix Figure 1-A-32 Non~Mainstem discharge (Provisional USGS 1983) versus the water surface
elevation at Slough 8A mouth and upper backwater.
J a t .. J J .. I J ) ' ! '
......
I
):;:.
I ......
\.0 w
2:~~~~~~~--~----------------------------------------~ SLOU~H BA LOWER 0 SITE W.CHANN.
0
UJ
Ul +
RN 125.7
GAGE 125.354
A:
NOT CONTROLLED
7 ,230~ Q < 25,400 cfs
NO EQUATION DEVELOPED
d B:
01 -CONTROLLED
~
25,400 ~ Q~ 31,000 cfs
WSEL = 1 o~2.0695 Q.5968 + 560
10
MAINSTEM DISCHAR~E AT GOLD CREEK llOOOCfSl 100
~:y-----------------------------------------------------------.
f-1
LJ w r......
SLOUGH BA NW CHANNEL 10 SJTEI
RN 125.3
GAGE 125.353
A:
NOT CONTROLLED
o 10,6005Q<27,400 cfs
UJ
Ul + NO EQUATION DEVELOPED
B:
CONTROLLED
27 ,400~ QS 31 ,000 cfs
NO EQUATION DEVELOPED
~B~
Ill AA-1!!1• ";/"
A "'
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
Appendix Figure 1-A-33 Non-Mainstem discharge (Provisional USGS 1983) versus the water surface elevation
at Slough 8A NW Channel discharge site and lower discharge site west channel. ·
~:~~~~~~~~~~~------------------------------------SLOUGH BA NW CHANNEL IHEAOl
RN 126.2
GAGE 125.3H2
~: NOT BREACHED
o< 27,400 cfs
NO EQUATION DEVELOPED
[j B:
~ -BREACHED
d
U) :z
27,400:5 QS. 32,000 cfs
WSEL = 10 -3.7994 Q.9672 + 570
~ ~ . --.-
-100
MAINSTEM DISCHARGE AT GOLD CREEK (lOOOCfSl
2~~~~~~~~~~~--------------------------------~ SLOUGH BA LOWER 0 SITE E.GHANN.
RM 125.7
GAGE 125.355
A:
NOT CONTROLLED
7,230~0<25,400 cfs
NO EQUATION DEVELOPED
B:
CONTROLLED
25,400 < Q$. 31 ,000 cfs
WSEL ~ 10-1.5846 Q'4894 + 560
-a---aar-----tt-11-·-............--A· r;} H~---A---a-u.;oo.~;rl
1~--------------------~-.--~------~---P-----.---.--~ 10 100
MAINSTEN DISCHARGE AT GOLD CREEK llOOOCfSl
Appendix Figure 1-A-34 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 8A lower discharge site east channel
and NW channel head.
.......
I
):oo
I .......
1.0
(J1
8~~~~~~~------------------------------------------SLOUGH 9 lMOUTHl
RM 128.3
GAGE 128.3H3
A:
B:
NO BACKWATER
8,760~ Q< 12,200 cfs
NO EQUATION DEVELOPED
-BACKWATER
2 < < 1 ,200-Q -36,000 cfs
WSEL = 10-2.8868 Q.8291 + 587
it. ----------~--~~----~~------.-------~~~--_J 10 tOO
MAINSTEM DISCHARGE AT GOLD CREEK (lOOOCfSl
Appendix Figure 1-A-35 Non-~~ainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 9·mouth.
] }
Appendix Figure 1-A-36 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 9 discharge site and head .
••••
_c~, =c~c~~ -~ ---~-~--: J ~-] -~ ~ } -:-) '}
~ ~ SIDE CHANNEL 10
RM 133.9
GAGE 133.657
~ A:
NOT CONTROLLED ~A~
t.... 12,200~0< 13,200 cfs lJ) ....
Ul NO EQUATION DEVELOPED +
_J _!!: w CONTROLLED Ul
::J:
13,200~ o< 31,900 cfs
WSEL = 10-1.3436 o·5005 + 645
-l 10 100 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
g~----------------------------------------------------------
lJ) .,.
Ul +
_J w
U') :z
SIDE CHANNEL 10 IMOUTHl
RM 133.6
GAGE 133.8WS
BACKWATER
12,200~0~31,900 cfs
WSEL = 10-1.6090 0.5621 + 645
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
1 ---l
Appendix Figure 1-A-37 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Side'Channel 10 mouth and Side Channel 10
at staff gage 133.8S7.
-~ 1
10 100
HAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
Appendix Figure 1-A-38 Non-Mainstem discharge (Provi'sional USGS 1983) versus the water
surface elevation at Side Channel 10 physical habitat modeling
cross sections 1 and 2 (staff gages 133.851 and 133.BS2).
} .i
-1
Appendix Figure 1-A-39 Non-Mainstem discharge (Prov\sional USGS 1983) versus the water
surface elevation at Side Channel 10 physical habitat modeling
cross section 4 (discharge site) and head.
.......
I
)::o
I
N
0
0
d
Ill :z
2:~~~~~~~~----------------~--------------------------~ LOWER SIDE CHANNEL 11
RN 135.2
GAGE 134.652
A:
B:
CONTROLLED
< < 8,010-Q-17,800 cfs
WSEL = 10-.7213 0.3082 + 660
CONTROLLED
17,8005:0S:31,900 cfs
WSEL = 10-1.7520 0.5516 + 660
a A·~\ ~ Change In Slope Influenced
· By Channel Geometry
10 100 MAINSTEN DISCHARGE AT GOLD CREEK llOOOCfSJ
2~------------------------------------------------------------LOWER SIDE CHANNEL 11
RN 135.0
GAGE 134.651
A:
CONTROLLED
a 8,010~ Q~ 17,800 ch
(0
~ WSEL ~ 10 -1.5260 0 .4350 + 660
B:
CONTROLLED
a ~" ~A Change Bn Slope Influenced
By Channei Geometry
17,800~Q~31,900 cfs
WSEL = 1o-4.1656 01.0571 + 660
tO 100
MAINSTEN DISCHARGE AT GOLD CREEK llOOOCfSJ
Appendix Figure 1-A-40. Non-Mainstem discharge (Provisional USGS 1983)
versus the water surface elevation at Lower Side
Channel 11 physical habitat modeling cross-sections
, 1 and 3 (staff gages 134.6Sl and 134.652).
1
-~ 1
I--'
I
)>
I
N
0
I--'
~~1 -c=-1
tJ
L..l t....
Ul
Ul w +
_]
r..J
U1 :z
,_---: 1 --1 l l ,--' -. ) -l 1
2:~----------------------------------------------------------~
~1
SIDE CHANNEL A/B SLOUGH 11 MOUTH
RM 135.3
GAGE 135.3M2
A:
B:
CONTROLLED
S,020~Q<7,950 ch
NO EQUATION DEVELOPED
CONTROLLED
~·~ ~A~B
~Change In Slope Influenced
7,9SOS. QS36,000 cfs By Channel Geometry
WSEL • 1o·1.6802'Q.5312 + 665
10
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
100
g~--------------~------------------------------------------~ SIDE CHANNEL B/L SLOUGH 11 MOUTH
:d3;;Lll14 p
A:
CONTROLLED
7,9SOS.Q~ 13,400 cfs
B:
CONTROLLED
13,400S. Q~ 31 1 900 cfs
~1 10 100
MAINSTEM DISCHARGE AT GOLD CREEK UOOOCfSl
)
Appendix Figure 1-A-41 Non-~1ainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Side Channel below Slough 11 mouth and Side
Channel above Slough 11 mouth.
J } --"I l
I-'
I
)::>
I
N
0
N
100
g:~------------------------------------------------------------SLOUGH 11 lNOUJHl
RN 135.3
GAGE 135.3Wl
t;:j A:
~ BACKWATER
ill 7,230~Q<11,400 cfs
~ WSEL = 10-3,9961 01.0566 + 665
cl B:
~ -BACKWATER
1 1 , 400 ~ Q < 13, 1 00 cfs
WSEL = 10-8.7312 0 2.2258 + 665
C:
-BACKWATER
13,100$ 0~ 37,000 cfs
WSEL • 10-2.3907 0'6910 + 665
10
NAINSTEN DISCHARGE AT GOLD CREEK llOOOCfS)
100
Appendix Figure 1-A-42 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 11 mouth and discharge site.
J
........
I
)::o
I
N
0 w
... l
~?---------------------------------------------------------~ UPPER SIDE CHANNEL 11
RN 136.2
GAGE 136.251
L1 BACKWATER
U}
:z 11,400~ Q~31 ,700 cfs
~SEL = 10 -3.5080 Q'9269 + 675
10 HAINSTEM DISCHARGE AT GOLD GREEK llOOOGfSl 100
2:~---------------------------------------------------------, UPPER SIDE CHANNEL 11 lNOUTHl
RN 136.2
GAGE 136.2W3
BACKWATER
11,'+00~Q~31,700 ch
WSEL = 10-3.2727 Q.8706 + 675
10 MAINSTEM DISCHARGE AT GOLD CREEK UOOOCfSl
JOO
Appendix Figure 1-A-43 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Upper Side Channel 11 mouth and physical
habitat modeling cross section 2 (136.254).
100
100
Appendix Figure 1-A-44 Non-Mainstem discharge (Prov,isional USGS 1983) versus the water
surface el~vation at Upper Side Channel 11 physical habitat model-
ing cross section 3 (136.255) and discharge site.
-J
j __ ,-~''i • --~l J -~ --, l --] j ~-~ i 1
Appendix Figure 1-A-45 Non-Mainstem discharge (Prov1isional USGS 1983) versus the water
surface elevation at Upper Side Channel 11 head and Slough 168
mouth.
J
.......
I
)::>
I
N
0
O'l
t-o
t.J
~
Ill
C)
f
d
U) :z
~:~~~~~~~~----------------------------------------------SLOUGH 166 CHEAOl
RM 138.2
GAGE l3B.OH3
A:
-NOT BREACHED
Q<20,200 cfs
NO EQUATION DEVELOPED
B:
BREACHED
20,200~ QS 31,900 cfs
WSEL = 10 -3.5894 0 .9464 + ?OO
1~------~----~--~~~~?-~.~,ro--------~--~~~--~~~~~ 100 MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
2
SLOUGH 166 (0 SlTEl
RM 138.0 ~
GAGE 138.055 ~ A: ....... ltiD
NOT CONTROLLED f+-A--1
11,700~Q~23,100 cfs
NO EQUATION DEVELOPED
B:
CONTROLLED
< . 23,100_QS:28,200 cfs
WSEL = 1o-4.0095 01.0842 + 695
-l lO 100
MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfS!
Appendix Figure 1-A-46 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 16B discharge site and head.
1
......
I
)>
I
N a ........
-------1 '~-j t t ~--~ J ~;
2:~~~77~~~~~~------------------------------------~ SLOUQH 19 (BELOW MOUTH)
_j w
Ul
~
_j
~ ::z
RM 1'39.5
GAGE 140.053
A:
B:
NO BACKWATER
10.700~Q<13,000 cfs
NO EQUATION DEVELOPED
BACKWATER
13,ooo5Q 536,000 cfs
WSEL = 10-1.86~4 Q.6075 + 715
~~l--------~--~--~--~~~~~1~0--------~--~--~--r-~~~~
N . ~ MAI STEM DISCHARGE AT GOLD CREEK (lOOOCfSl
9~~~~~~~~----------------~--------------------~ SLOUGH 19 (ACCESSl
RM 1'39.7
GAGE 140. OW 1
~:
B:
NO BACKWATER
7,230.5Q<13,600 cfs
NO EQUATION DEVELOPED
BACKWATER
13,600 .5 Q < 19,600 cfs
WSEL = 10 -4.3226 Q1.1845 + 715
~A~(\ ~Change In Slope Influenced
~By Channel Geometry
C:
BACKWATER
19,600~ Q~33,000 cfs
WSEL = 10-.8572 Q.3780 + 715
l~------~--~--~~-.~~~------~----~~----~~--J
MAINSTEM DISCHARGE A~0 GOLD CREEK (lOOOCfSl
100
Appendix Figure 1-A-47 Non-t1ainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 19 access and below mouth.
1 ----j l
tO 100
MAINSTEM DJSGHARGE AT GOLD CREEK l1000CfSl
Appendix Figure 1-A-48 Non-Mainstem discharge (ProVtisional USGS 1983) versus the water
surface elevation at Slough 19 discharge site and Slough 20 mouth.
I l
c~c=cj --c)
t-'
I
)::>
I
N
0
0.0
1
_, ___ -r --J --) --J J ~·---I _.
~:~~~~~~~--------------------------------------------SLOUGH 20 ( HEAOl
RN 140.6
GAGE 140. 1H3
A:
NOT BREACHED
Q~21.500 ch
NO EQUATION DEVELOPED
rJ !!=
U1 BREACHED
:z
21,500$; Q$ 32,500 cfs
WSEL = 10-1.0121 Q.4121 + 725
i. 10 NAINSTEN DISCHARGE AT GOLD CREEK
g
SLOUGH 20 lO SITEl
RN 140.2
GAGE 140. iSS
t-o ~: w NOT CONTROLLED w
[._
IJ'J a.480$.Q< 23.100 cfs
C'll r-.. NO EQUATION DEVELOPED +
_J B: w CONTROLLED U1 :z a
23.100~Q~32,500 cfs
WSEL = 10-7.1896 Q1.7005 + 725
-, 10
NAINSTEN DISCHARGE AT GOLD CREEK
llOOOCfSl
llOOOCfSJ
Appendix Figure 1-A-49 Non-Mainstem discharge (Provisiqnal USGS
surface elevation at Slough lO discharge
100
100
1983} versus the
site and head.
l J -f
water
Appendix Figure 1-A-50 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Side Channel 21 mouth and Upper discharge
site .
. ·.~
I-'
I
J>
I
N
I-'
I-'
_j w
Ul :z
(
2:~~~~~~~~~----------------------------------------~ SIDE CHANNEL 21 lMIO CHANNELl
RM 141.6
GAGE 140.652
CONTROLLED
12,000SQS 33,000 cts · ,
WSEL ~-10 -1.2246 Q.4191 + 740
"
L+-------~--~--~~~~~~------~----~~~~~~~ w ~ HAINSTEM OISCHAR~E AT GOLD CREEK llOOOCfSl
~:~~~~~~~~~~~~------------------------------~ SIDE CHANNEL 21 lLOWER 0 SITEl
RN 141.1
GAGE 140. 6Si
CONTROLLED
10,700~Q~33,000 cfs
WSEL = 10 -.2995 9.2669
-~1-----------.----------~~------~----~--~~~~ w ~ MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
. J
Appendix Figure 1-A-51 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevat~on at Side Channel 21 Lower discharge site and
mid channel.
Appendix Figure 1-A-52 Non-Mainstem discharge (Prov•isi0na1 USGS 1983) versus the water
surface elevation at Side Channels AS and A6 Upper.
......
I
)>
I
N ..... w
1-o w w
[&..
a ...,.
t-... -+
_J w
Ul :z
---l -.l
~ SLOUGH 21 (0 SITEl ·w RN H2.0
GAGE 142.0S6
D • b •lldiP• u•a. ClfJa
'<( >I A
A: B:
NOT CONTROLLED -CONTROLLED
2,900~Q~24,700 cfs 24,700~ Q~ 33,000 cfs
NO EQUATION DEVELOPED WSEL = 10~4.1508 Q1.1023 + 740
-1 10 100
NAINSTEM DISCHARGE AT GOLD GREEK llOOOGfSl
~~~~~~~~----------------------------------------~ SLOUGH 21 lMOUTHl
RN Hl.B
GAGE 142.0WS
A:
B:
NO BACKWATER
7 ,230~ Q< 24 J 700 cfs
NO EQUATION DEVELOPED
BACKWATER
24,700 :S Q S. 33,000 cfs
WSEL = 10~3.4271 Q.9376 + 740
~ -~~----...,••A.,..,.......,u...,P""'._...._.~,..
-~1----------~----------~~------~----~~~~~~ w ~ MAINSTEM DISCHARGE AT GOLD CREEK llOOOCfSl
-..... )
Appendix Figure 1-A-53 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 121 ~outh and discharge site.
-l ---~
......
I
):>
I
N ......
+::> 2t,-------------------------------------------------------------. SLOUGH 21 (NW HEADl
RN 142.2
GAgE 142.DH3
A:
-NOT BREACHED
o<24,700 cfs
NO EQUATION DEVELOPED
d B:
~ BREACHED
24,700 :Sos; 33,000 cfs
WSEL; 1o-1.7550 0 .5496 + 750
' 10 MRINSTEM DISCHARGE AT GOLD GREEK llOOOGfSl
100
Appendix Figure 1-A-54 Non-Mainstem discharge (ProvjsiQnal USGS 1983) versus the water
surface elevation at Slough 21 NW head and NE head.
I
I ......
I
);o
I .
N ......
U1
1
Appendix Figure 1-A-55 Non-Mainstem discharge (Provisional USGS 1983) versus the water
surface elevation at Slough 22 mouth and mid slough.
-J
. J
....... I .
):>
I
N .......
rn
I 1
d
U)
:X
~:~S~LnOWUGHif2:2227lHHtEiAflDll-----------------------------------------
RM 141:.7 GAGE 1 ii. 3H2
~~
NOT BREACHED
Q < 20,000 cfs
NO EQUATION DEVELOPED
B:
-BREACHED
2o,oooSQf31 ,900 cfs
WSEL = 10·4,3099 01.1065 + 765 lr---~~~--~~~~
MAINSTEM DISCHAR~E AtoGOLD CREEK ClOOOCfSl 100
2~S~LrnOU~G~H~2~2!UlOJSS~ITnEil----------------~----------------------
RN 1H.6
GAGE 144.356
A:
-NOT CONTROLLED
8:
10,600~ o< 23,000 cfs
NO EQUATION DEVELOPED
-CONTROLLED
23,000~Q'S.28,200 cfs
WSEL = 10·6.1903 01.5463 + 780 -~1 --~~~--~--~ MAINSTEM DISCHARGE AtoGOLD CREEK llOOOCfSl 100
Appensix Figure 1-A-56 Non-t~ainstem discharge {Provisional USGS 19A3) versus the water
surface elevation at Slough 22 discharge site and head .
1 I } I I 1 J ' 1 J J i