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Alaska Energy Authority
LIBRARY COPY
AsskaPowerAu~orlty
Bradley River
Water Quality Report
1987
BRADLEY LAKE
HYDROELECTRIC PROJECT
Federal Energy Regulatory Commission
Project No. P-8221-000
0960/798/1
ALASKA POWER AUTHORITY
BRADLEY LAKE HYDROELECTRIC PROJECT
1987 BRADLEY RIVER WATER QUALITY REPORT
Table of Contents.
List of Figures.
List of Tables ..
Introduction.
Equipment.
Location ..
Servicing .•.•.
Results .........•...
Riffle Reach ...
Tree Bar Reach.
North Fork ....
Miscellaneous Data.
Future Studies .•
References ..... .
0960/798/2
TABLE OF CONTENTS
Page
i
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iv
1
1
1
1
3
3
3
3
4
4
41
Figure No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
0960/798/3
LIST OF FIGURES
Title Page
Datapod Locations--Bradley River 1987 .......•....•.... 2
Surface and Intragravel Water Temperature
Riffle Reach:
December 1986 ..•......................................
January 198 7 ..................•.......•...............
February 1987 ........................................ .
March 1987 ......•....•..•..........•...............•..
5
6
7
8
April 1987 ............................................ 9
May 198 7 . • . . . • • . . . . • . . . . • . . • . • . . • . • . • • • • • . . • . . . . . . . . . . 10
June 1987 ............................................. 11
J u 1 y 198 7 ••••.•.••.•..•.•.••••.••.•••.••••.•..••••••.•
August 1987 ...•....•.••.•..•.••.••...•.•..•.........•.
September 1987 ....................................... .
October 1987 ....•..........•....•.....................
November
Yearly:
198 7 ........................................ .
December 1986 through November 1987 .•.•......
Surface and lntragravel Water Temperature
Tree Bar Reach:
12
13
14
15
16
17
March 1987 .....•...................................... 18
April 1987 .............•. ~ .........••.................
May 1987 ............................................. .
June 1987 .........•..................•.•......... if ••••
September 1987 .......•.........................•......
October 1987 ................................•.........
November
Yearly:
198 7 .•..••...........•.......... if ••••••••••••
March 1986 through June 1987;
19
20
21
22
23
24
September 1987 through November 1987 ........• 25
Water Temperature
North Fork Site:
December 1986. . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
January 1987 .•........................•............... 27
February 1987 .•.............•...•............•........ 28
March 1987 ...........•.......•..•............•........ 29
Apri 1 1987 .........•.........•.....•.......•....•..... 30
i i
Figure No.
28
29
30
31
32
33
34
0960/798/4
LIST OF FIGURES
Title
May 1987 ............................................... 31
J u 1 y 198 7 . • . • . • • • . . • • • • • . • . • . • • • . • . • • • • . • . • . . . • . • . • . . . 3 2
August 1987 •......•..•.............•............•.•... 33
September 1987 ........................................ 34
October 1987 .......................................... 35
November 1987. . . . . . . . . . . . . • . . . . . . • . . . . • . . . . . . . . • . . . . . . 36
Yearly: December 1986 through November 1987 ...••..... 37
iii
Table No.
1
2
3
0960/798/5
LIST OF TABLES
Title
Bradley River Water Quality Measurements ...•.......... 38
Kachemak Bay Water Quality Measurements ...•......•.... 39
Martin River Water Quality Measurements ............•.. 40
iv
INTRODUCTION
The purpose of this report is to comply with Article 33 of the Federal Energy
Regulatory Commission (FERC) License which states a water quality monitoring
program must be developed to evaluate water temperatures in the lower Bradley
River and heavy metal and hydrogen sulfide concentrations in Bradley Lake.
The monitoring program was developed and presented in the Bradley Lake
mitigation plan published in November 1985. This is the second progress
report covering the water quality data collected during 1987. This informa-
tion includes: (1) a continuation of monitoring Bradley River water tempera-
tures; (2) turbidity measurements from the Bradley River, Martin River and
Kachemak Bay; (3) pH measurements from the Martin River and Kachemak Bay; and
(4) settleable solids from Bradley River, Martin River and Kachemak Bay.
EQUIPMENT
Surface and intragravel water temperatures continue to be collected utilizing
Model DP212 Omnidata Datapod digital recorders equipped with two connecting
temperature probes. Each battery powered datapod runs continuously and is
programmed to record data at either two-hour (Tree Bar and Riffle Reach
sites) or six-hour (North Fork site) intervals. Data collected at Riffle and
Tree Bar Reach is accurate to 0.1°C and data collected at the North Fork is
accurate to 0.5°C. Installation methods for each datapod are described in
the 1985 Water Quality Report (Alaska Power Authority 1985).
LOCATION
Temperature data continues to be collected at the same three locations as
described in the 1986 Water Quality Report (Alaska Power Authority 1986),
i.e. Riffle Reach and Tree Bar Reach in the lower Bradley River and the North
Fork site in the North Fork of the Bradley River (Figure 1). As reported in
the 1986 Water Quality Report the temperature recording station at Tree Bar
Reach was washed out during a flood. This was replaced March 12, 1987 at a
location approximately 100 yards upstream from the U.S.G.S. gaging station.
The probe was placed in a pool area and the datapod attached to a tree about
25 feet back from the river bank.
SERVICING
Each datapod was serviced approximately every six weeks, or more often by the
Alaska Power Authority Environmental Field Officer (EFO). Servicing includes
performing a short dump, (a display of the latest recorded data), checking
the batteries and changing the data storage module (DSM). Any problems
encountered are either taken care of immediately, or if new parts are needed,
as soon after discovery of the problem as possible.
The datapod at Tree Bar Reach had several problems throughout the year. When
the datapod was checked on June 30, channel one was malfunctioning, so a new
datapod was installed. This datapod also malfunctioned and was replaced on
0960/798/6 1
0
BRADLEY RIVER SYSTEM
MILES
0 USGS GAGING STATION
A DATAPOD
BRADLEY
LAKE
FIGURE 1
Oatapod Locations, Bradley River. 1887
-2-
N •
August 13. Again, the datapod malfunctioned and a third unit was put in the
field on September 9. During the last visit, December 10, 1987, further
problems were again encountered. The problem is most likely in the probes
and they may require replacement. Further investigation will be done in
January 1988.
Problems at the North Fork site were minor compared to Tree Bar Reach. A new
datapod and temperature probe needed to be installed on June 30 as the
temperature readings were erroneous. The datapod at Riffle Reach was also
changed March 20 as several errors were encountered during the short dump.
The latter two sites have not had any other problems.
RESULTS
The collected data for 1987 is presented here in graphic form by month, by
study site. As mentioned earlier, data is recorded at either two-hour or
six-hour intervals. An annual graph was also produced for each study site
based on a daily average of the hourly recordings. Complete print-outs of
the data are not presented in this report due to their bulk, but are avail-
able upon request from the Alaska Power Authority.
Riffle Reach -Riffle Reach data covers the period from December 1986 through
November 1987. There were no significant data gaps. Intragravel and surface
water temperatures generally remained within a 0.5°C difference, with the
intragravel temperature being warmer. This pattern is true until the second
week in November when the intragravel temperatures drop below the surface
temperatures and the difference is approximately 1.4°C. Temperatures ranged
from a low of 0°C to a high of 10°C. Little lag time is evident between the
two temperatures' traces. Figures 2 through 13 show monthly temperatures.
Figure 14 is the yearly daily averages.
Tree Bar Reach -As noted earlier, there were several problems with the
datapods at this site which caused data gaps. Data coverage is from
March 1987 through June 1987 and September 1987 through November 1987 ( Fi-
gures 15 through 22). The data indicates that throughout the year surface
temperatures are slightly cooler from March through May. However, in June
the surface temperatures begin to exceed the intragravel temperature (Figure
18). This brief record, unfortunately, is the only reliable data gathered
during 1987. The data from September through November is suspect due to high
temperature recordings {up to 19°C in October and November when surface water
temperatures are generally less than 5°C.) Additionally, the difference
between the surface and intragrave 1 temperature often exceed 8°C, which is
highly unlikely. (Figures 19 through 21.) Surface temperatures (in the
period from March through June) range from a low of 0.0°C to a high of 5.2°C.
Intragravel temperatures range from a low of 0.6°C to a high of 3.6°C.
North Fork-Data for this site is from December 1986 through November 1987,
except June 1987 (Figures 23 through 35.) Data from approximately mid
February 1987 through the end of May 1987 is suspect as temperatures are
unbelievably high (Figures 25 through 29). Temperatures range from a low of
0960/798/8 3
ooc to a high of 9.5°C. Only surface water temperatures are collected at
this site.
A comparison between Riffle and Tree Bar Reaches indicates both surface and
intragravel temperatures are generally within 1.0°C of each other. Intra-
gravel temperatures fluctuated much less at Tree Bar Reach than at Riffle
Reach, while surface temperatures fluctuated more at Tree Bar Reach than at
Riffle Reach. At Riffle Reach, the surface and intragravel temperatures are
closely aligned with each. However at Tree Bar Reach, the surface temper-
atures fluctuate widely while the intragravel temperatures show only slight
temperature differences (Figures 8 and 18).
MISCELLANEOUS DATA
Several of the Alaska Power Authority's permits require baseline water
quality data collection so there can be a comparison of the water quality
between pre-construction and during construction. The Power Authority,
therefore, initiated a data collection program during the spring of 1987.
Measurements were taken from three water bodies. The water bodies and
corresponding water quality parameters are as follows:
Bradley River -Turbidity, settleable solids
Kachemak Bay -Turbidity, settleable solids, pH
Martin River -Turbidity, settleable solids, pH
Data collected for each water body are summarized in Tables 1 through 3.
FUTURE STUDIES
Water temperatures will continue to be collected in the Bradley river. Other
water quality parameters will be investigated as required by specific per-
mits.
In addition, the pre-operation sampling of Bradley Lake will begin in Janu-
ary, 1988. The sampling program will be completed as outlined in the Mitiga-
tion Plan (Alaska Power Authority 1985) with the following change. The
samples collected for heavy metal concentrations will not be filtered and
fixed in the field, but will be collected and shipped to a professional lab
for analysis. This procedure will reduce the possibility of contaminating
the sample during the field filtering process and improve overall reliability
of the analysis. Personnel at a local Anchorage laboratory were consulted
and suggested this procedural change. Also, the Alaska Department of Envi-
ronmental Conservation has been contacted and concurs with this procedure.
0960/798/9 4
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RIFFLE REACH: BRADLEY RIVER 1986
2.8 ~----------------------------------------------------------
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RIFFLE REACH: BRADLEY RIVER 1987 3.0 ~------------~~~~~-----------------------------.
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DATE
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RIFFLE REACH: BRADLEY RIVER 1987
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RIFFLE REACH: BRADLEY RIVER 1987
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01-Jul 06-Jul 11-Jul 17-Jul 22-Jul 28-Jul
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RIFFLE REACH: BRADLEY RIVER 1987
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01-Aug 06-Aug 16-Aug
DATE
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RIFFLE REACH: BRADLEY RIVER 1987
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DATE
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RIFFLE REACH: BRADLEY RIVER 1987
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DATE
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3.4
3.2
3.0
2.8
2.6
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01-Nov 06-Nov
SURFACE TEMP
RIFFLE REACH: BRADLEY RIVER 1987
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DATE
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11.00
RIFFLE REACH: BRADLEY RIVER 1987
10.00
9.00
8.00
7.00
6.00
5.00
4.00
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01-Dec 01-Jan 01-Feb 04-Uar 04-Apr 05-Uay 05-Jun 06-Jul 06-Aug 06-Sep 07-0ct 07-Nov
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
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SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
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1.0
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I ,-,., 1\ r---
___ 1\ ,-,• .. ----' I I ,---'II --, ,-----,. -·--_, ---
0.4
0.2
0.0
-0.2
-0.4
-0.6 ~----------------~---------------.-----------------.--------~
12-Mar 18-Mar 23-Mar 28-Mar
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
"'I
G)
c: :a
m ...
Cll
()
(!) w c
I
w
I r::t:: ..... ::::> 1..0 ~ I
w
Q_
~
SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
3.5 ~----------------------------------------------------------
3.0 -
2.5-
:l ,f4o~
~
2.0-
1.51~·#~-\''~\J~.~lJJ
1.0-
• I I I
v ~ 0.5 -f' ~
0.0 ....j Ll
1\ " I II I ' ... ,_,-I
~ v I II A
u v~
-0.5 ~----------r---------~----------~----------r----------r-----
01-Apr 06-Apr 11-Apr 17-Apr 22-Apr 28-Apr
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
,
Q
c:
:zl
m ..
Gl
SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
4.0
3.8 -
3.6-
3.4-
3.2-
(.) 3.0 -
(!) w 2.8-
0
~ i ;:: l.~~~NttHftrrrlnr~IiHN/~Ji~, ·~ '~ilj't.A-~.h~. {f'l'.
~~vv~
w
0.. 2.0 -
:::E w
I-1.8 -
1.6-
1.4-
1.2 -
1.0 -
1'\
' ,. J.i ., ..
-•1-.., I I.-.. •""' I ·---11+-""'-'t ,.1
vVV"v
u v
0.8 I I I I I
1
' u •
01-May 06-May 11-May 17-May 22-May 28-May
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
"'I
G')
c::
:a
m
.... .....
(.)
(.!)
LIJ
0
I
LIJ
0:::
I ::J
N ~ 1-'
I
LIJ a..
~
LIJ .....
SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
5.2
5.0 -
4.8 -
4.6-
4.4-
4.2-
4.0 -,1\
J.8 -
J.6 -
J.4-
J.2 -
J.O-
2.8 -
}f. \jf I ~
V
I I JUt "J};. _,-,-~---.
J I U -It
v .~1 .:W I l u .!
~:: J4!r.JA~kil~-~-· I I i•~ffMAJ.!~.!~ _, ''V
~ v v u v 2.2 -
2.0 -\1
\1 u u
1.8 ~------------~----------T-------------r---------~----------~-----
01-Jun 06-Jun 11-Jun 17-Jun 22-Jun 28-Jun
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
, -G) c
:lll m ...
C»
I
N
N
I
SURFACE & INTRAGRAVEL WATER TEMPERATURE
16
15
14
13
12
(.) 11
t3 10
0
I 9
I.&J
0::
::J
~
I.&J a..
:::'!:
~
8
7
6
5
4
3
2
TREEBAR REACH: BRADLEY RIVER 1 987
,. ,,,,.. ,, ...
-•• I'"J'" ,,/ <I '
1
\r I' I ,I. ~, • I I ol' I • ,' 1 ~I ,"1 ~ ,·~"-~ '••',·~ I : ~
I
' I (II '"1•,,•, I I I I 'A ,•I I I \ f , I' ~~ r' ' '
I I I I I '• •
1 I I•''•'' I 1/
I I I II
~~----~----~~~--~~----~~ 09-Sep
II\ I I •/ \1
Tf I • •
"v
14-Sep 24-Sep 19-Sep
DATE
29-Sep
SURFACE TEMP ----INTRAGRAVEL TEMP
"'I
C> c
::D m ...
CD
(J
(.!) w
0
I
w
0::
I :::::>
N ~ w
I
w a..
::E w
1-
SURFACE & INTRAGRAVEL WATER TEMPERATURE
19.0
TREEBAR REACH: BRADLEY RIVER 1 987
18.0
17.0
16.0
15.0
14.0
13.0
12.0
11.0
10.0
9.0
J '"" lJU .. vv fa!
l /'/ l ~ I\ '' t
11
' I "" ~ I I I I ~ I I l ,..,,, I I I
t 11" " .. ' '•r
I ~~ l't 1\l I I I
#L/ (' t,i 1
1 I '1 1
1 I 11
I lr .. ' I~ I "t Jl•l \ I I I I I
I t \ I 1l tl II
I \ I fltJ ll
I I J I ~· I
1 lr11 '
I •l
8.0
7.0
I
~
I
6.0
5.0
I " • I " "'~o'il" ,.• I~ ""' /1 I I ' I I I I t.,. ""' -I I
lfl
1 11 11" I I
}I I I I '" ' ,
4 0 _j 1111\ I . ~ f~ll
II
3.0 '
01-0ct 06-0ct 1 1 -Oct 16-0ct 21 -Oct 26-0ct 31-0ct
DATE
SURFACE TEUP ----INTRAGRAVEL TEMP
"11
Ci)
c
:u m
N
0
I
N
.j::a
I
0
" w c
I
w
0:::
~ w a..
:::E
~
SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
21.0 .----------------------------------------------------------
20.0
19.0
18.0
17.0
1111 I II 111.1 I II I
16.o -t ·u II I I Ill
15.0
14.0
,. II •'' .,.\ .. ,
13.0 h' i' ' , \
I
II
I
\\.... I
"''"
_,
....
I '-,.-
I
I II I. I I II I I
1111 Ill I I II I I
-,. , ... "" '"" ,. ,-, -.._,..'" II• \ I I
.,.,1 ... , .. ~,---"'' '"' 'V 1
\-i"\"
I 'I lf.t \ I \ ,. I """ " .. \'
12.0~--------r--------.--------.-------~--------.-------~
01-Nov 06-Nov 11-Nov 16-Nov 21-Nov 26-Nov
DATE
SURFACE TEUP ----INTRAGRAVEL TEUP
,
G)
c
::D m
1\:1 ...
0
(!) w
0
I
I w N
<.1'1 n:::
I :::J ~ w a..
~ w ......
SURFACE & INTRAGRAVEL WATER TEMPERATURE
TREEBAR REACH: BRADLEY RIVER 1987
18.0
17.0
16.0
15.0
14.0
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4~0
3.0
2.0
1.0
' II
I I
I I
I I ' --..I -. I 1 I
I 1 I I ,'
I l I I f
I I I \1
I \ I
I I I
I I I
I II
I '
I
I
I
I
I
I
\1\ I
1
I 1 I " I
1
1
, I 11 I I
Ill' , II
" I I I I 1
II I ~ I I
' I { ~
\ I
"
0 • 0 latjiiiarfiuUUiiiilililhiiiiillililil ill hi iiiiihiiliiiil ilfiiili lhiiiiltiiiiiiii IIIII II 1111 iiilillii iiiiliiililili I II iiiliiliii II 1111 hili II II ililii II hihiiiih illiiilhltlliilli Iii iiiif
15-Mar 15-Apr 15-May 15-Jun 15-Sep 15-0ct 15-Nov
DATE
SURFACE TEMP ----INTRAGRAVEL TEMP
Tl
Q c
21
m
1\)
1\)
()
C) w c
I
w
I Q::
N ::J
"" ~ I
w
0..
:::!:
~
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1986
6.0 ~----------------------------------------------------------
5.5
5.0
4.5
4.0 I n I
~ vu I
3.5
3.0
2.5
2.0 1•········································••t 11111
'
111111111111111 l 1111111111111111
'
1111 1111111111111111111111 1111111111111
'
01-Dec 06-Dec 12-Dec 17-Dec
DATE
SURFACE TEMPERATURE
23-Dec 28-Dec
,. -"' c
:D m
N
(;o)
()
C> w
0
I
w n::
I :::> N
'-1 ~ I
w a..
:::E w .....
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
5.0
4.8-
4.6 ....
4.4-
4.2 -
4.0 -I ,...., n,........,,........, ~
3.8 --
3.6-
1-' I ,-, ,-J ...., L-....1
3.4-
3.2-
3.0 -1 1....-.....J
2.8-
2.6-
2.4-
2.2-
2.0 Jll 11111111111111 IIIIIJIIII Ill: II II II I I I l ' I I I I I I I I I • I I I I ITI I II l ,.-••• -. II I I I I I I I I I I I I I I I • I I I • I I • I I I I I I • I I I I I I I I I I I I ' I • I I
01-Jan 06-Jan 12-Jan 17-Jan
DATE
SURFACE TEMPERATURE
23-Jan 28-Jan
.,
i5 c
21
m
N •
15.0
14.0
13.0
12.0
()
"
11.0
w
0 10.0 I
w
9.0 0::: I ::::> N ~ CX>
I
8.0 w
CL
::::E 7.0 w
1-
6.0
5.0
4.0
3.0
01-Feb
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
06-Feb 12-Feb
DATE
SURF ACE TEMPERATURE
17-Feb 23-Feb 28-Feb
"II
Q c
:D m
~
(II
16.6
16.4
16.2
16.0
15.8
15.6
15.4 w
0:: 15.2 :::J
I ~ 15.0
N w
1.0 0..
I :::E 14.8 w .....
14.6
14.4
14.2
14.0
13.8
13.6
13.4
01-Mar
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
06-Mar 12-Mar 17-Mar
DATE
--SURFACE TEMPERATURE
23-Mar 28-Mar
.,..
C5 c :m m
N
CD
25.0
24.0
23.0
22.0
(.) 21.0
(!) w 20.0 c
I 19.0 w
I 0::
w :::> 18.0 0 ~ I
w 17.0 0..
::::! w ..... 16.0
15.0
14.0
13.0
12.0
01-Apr
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
06-Apr 12-Apr 17-Apr
DATE
SURFACE TEMPERATURE
23-Apr 28-Apr
"'I
G)
c
:0
m
N ...
80.0
70.0
60.0
50.0
w 40.0 0::
::J
I ~ 30.0
w w
...... a..
I ::::?: w 20.0 I-
10.0
0.0
-10.0
-20.0
01-May
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1 987
06-May 12-May 17-May
DATE
SURFACE TEMPERATURE
23-May 28-May
"" i5 c
:D m
N c:o
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
9.0 ,-----------------------------------------------------------
8.0 -
7.0 -
(.)
(.!) w
0
6.0 -
~ I s.o ~ L n ~ nl ~ ~ Ill\ 1\ I ~ ~~I ~ ~ ~ I U ~ l ~ U ~ ~
~ ~
w ..,_
4.0 -i
3.0
t
L
2. 0 I I I I I • I I i ' I I I I Iii I j i I h I I I I i I II i II i i I I I I I I I II I i I I I I II I I I I I I I I II i I I I I I Ill .. II • li 'I II I I I I I i I I I I II I' I I I I II ' i I I I I I I ' IiI iII I I I II I I I I I ' I I II I I II I I I I II I i I
25-Jun 30-Jun 05-Jul 1 0-Jul 15-Jul
DATE
SURFACE TEMPERATURE
20-Jul 25-Jul 30-Jul
WATER TEMPERATURE
10.0 T' --------..:........:,..~:..:::...:..:,_:..::.:..;__..,.._._--------1 I I I l 1
NORTHFORK OF THE BRADLEY RIVER: 1 987
9.0-
8.0 -
(.)
i r \1 ' u ~ u \1 ~ , u ~ ,
5.0-
4.0-
3. 0 I II I I II I II I II II .... 'I .. I II I II I II II I II I II I II I I II I IIi i .. Iii ill , .. ill I j .. I II I II I "'I .. " II II li" Ill Ill I I ...... ill II I II I I II I I""'
01-Aug 06-Aug 11-Aug 16-Aug 21-Aug 26-Aug 31-Aug
DATE
-SURFACE TEMPERATURE
0
(!) w
0
I
w a:::
I ::J ~ ~
w a.
:::!
~
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
10.0 .-----------------------------------------------------------
9.0
8.0
7.0
6.0 ~/
5.0 ~ \ AAfl A NJV\ N'-W\~n A A A J
4.0
3.0
2.0
1 0 ,,,,,,,,,,,,,, .......... . . ililiii& iiillilllililiiliiililillliillilliiiillllilliililiillliilliil ilillilliiliiiiiiiiiiiiiiii
01-Sep 06-Sep 11-Sep 16-Sep
DATE
SURFACE TEMPERATURE
21-Sep 26-Sep
"'I
Q c
:D m
w ....
(.)
" w
0
I
w
It: I :::> w
(Jl ~ I
w
Q. ::e w
1-
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
6.0 ,------------------------------------------------------------
5.0
4.0
3.0
2.0 J
v u vv v \
1.0
0.0
-1.0 , ••••••••••••• , •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ,
01-0ct 06-0ct 11-0ct 16-0ct
DATE
SURFACE TEMPERATURE
21-0ct 26-0ct 31-0ct
"" G)
c
::D
"' w
II)
2.0
1.8 -
1.6 -
1.4 -
1.2 -
0 1.0
(!)
-,---J u ...._
w
0 0.8 -
I
w 0.6 -
I ~
w :::> 0.4 0'\ ~ I
w 0.2 a..
,-J -
-
::!! w 0.0 I--
-0.2 -
-0.4 -
-0.6 -
-0.8 -
-1.0 '. ... ,,. "' ... 'I
01-Nov 06-Nov
WATER TEMPERATURE
NORTHFORK OF THE BRADLEY RIVER: 1987
,....., M
,...--J .., r .___,
. ..... 'I' "' ... " • 'I "' ,,, ,, ' . 'I ' ..
11-Nov 16-Nov 21-Nov
DATE
SURFACE TEMPERATURE
....___,
....
' . • , I ...
26-Nov
i
'
i '. ' .. "
"" G)
c
21 m
(o)
(o)
(.)
C> w
0
I
w
0::
I ~ w ......,
I
w
0..
::E
~
WATER TEMPERATURE
22.0
NORTHFORK OF THE BRADLEY RIVER: 1987
20.0
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
-2.0 ~----~----~-----r----~----~--~~----~----~----~~--~~----
01-Dec 01-Jan 01-Feb 04-Uar 04-Apr 05-Uay 25-Jun 01-AUG 01-SEP 01-0CT 01-NOV
DATE
--SURFACE TEMPERATURE
.,
C)
c
::D m
w ...
TABLE 1
Bradley River Water Quality Measurements
Date of Sample
1-28-87
2-10-87
4-21-87
4-29-87
5-13-87
5-9-87
5-20-87
5-28-87
7-14-87
7-30-87
8-6-87
8-13-87
8-20-87
8-27-87
9-3-87
* No analysis was performed.
0960/798/10
Turbidity
(NTU)
246
224
52
45
588
108
190
185
190
192
240
185
155
160
190
38
Settleable Solids
(ml/L)
*
*
*
0
0.2
*
Trace < 0.1
Trace < 0.1
Trace < 0.1
*
*
*
*
*
*
TABLE 2
Martin River Water Quality Measurements
Date of Sample
3-26-87
4-9-87
4-16-87
4-22-87
4-29-87
5-19-87
5-20-87
5-27-87
6-24-87
7-15-87
* No analysis performed.
0960/798/11
Turbidity
(NTU)
2.4
1.8
1.9
4.5
2.5
3.2
95
2.8
243
114
39
Settleable Solids
(ml/L)
0
0
0
0
0
0
0.1
0
Trace < 0.1
Trace< 0.1
7.6
7.1
7.1
7.4
6.4
7.6
*
7.7
6.4
*
TABLE 3
Kachemak Bay Water Quality Measurements
Date of Sample Turbidity Settleable Solids 1
(NTU) (ml/L)
1-29-87 228 * *
3-3-87 124 0.25 7.7
3-18-87 28 Trace < 0.1 7.2
3-26-87 5.2 0 7.9
4-9-87 100 0.5 7.7
4-16-87 60 0.8 7.8
4-22-87 33 0.7 8.3
4-29-87 29 Trace < 0.1 7.8
5-19-87 40 Trace < 0.1 7.8
5-27-87 30 Trace < 0.1 7.9
6-24-87 94 0.1 7.3
* No analysis performed.
1. Settling time was 24 hours through 4-22-87, after which settling time
was reduced to one hour with a stir at approximately 30 minutes
(APHP 1971).
0960/798/12 40
References
Alaska Power Authority, Mitigation Plan, 1985. Bradley Lake Hydroelectric
Project. Report Prepared by Stone & Webster Engineering Corporation.
Alaska Power Authority, Bradley River Water Quality Report, 1985. Bradley
Lake Hydroelectric Project. Report Prepared by Woodward-Clyde Consultants,
Entrix, Inc. and Stone & Webster Engineering Corporation.
Alaska Power Authority, Bradley River Water Quality Report, 1986. Bradley
Lake Hydroelectric Project. Report Prepared by Stone & Webster Engineering
Corporation.
American Public Health Association, American Water Works Association, and
Water Pollution Control Federation. 1971. Standards Methods for the
Examination of Water and Wastewater, 13th Edition. 874 pages.
0960/798/13 41