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ALASKA DEPARTMENT OF FISH AND GAME
SUSITNA HYDRO AQUATIC STUDIES REPORT SERIES
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ALASKA DEPARTMENT OF FISH AND GAME
SUSITNA RIVER AQUATIC STUDIES PROGRAM
Report No.14
The Migrati~n and Growth of Juvenile
Salmon in the Susitna River,1985.
Authors:Kent J.Roth
Danial C.Gray
James W.Anderson
Alden C.Blaney
John P.McDonell
Prepared for:
Alaska Power Authority
701 East Tudor Road
Anchorage,Alaska 99519
June 1986 ARLIS
Alaska Resources
Library &.l.nronnatwll Servtces
Anchorage,Alaska
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TABLE OF CONTENTS
TABLE OF CONTENTS.
LIST OF FIGURES ••
PAGE
i
iv
LIST OF APPENDIX FIGURES ••..•......•••••••..•......vii
LIST OF TABLES .
LIST OF APPENDIX TABLES.
xi
xii
1.0
2.0
I NTRODUCTI ON ••
METHODS •••.
1
3
2.1 Study Locations .••3
2.1.1
2.1.2
2.1.3
2.1.4
Stationary traps ••...
Mobile trap ..•.•...••
Coded wire tagging .••
Cold branding ..•.....
3
3
3
3
2.2 Field Data Collection and Recording ..7
2.2.1 Stationary traps ..••.•..7
2.2.1.1
2.2.1.2
Flathorn Station •••
Talkeetna Station ...
7
8
,~2.2.2 Mobile trap .8
2.2.3 Coded wire tagging.9
2.2.4 Cold branding.9
2.3 Data Analysis ..••...•••.••...•10
2.3.1 Juvenile salmon catch per unit effort.10
2.3.2 Population estimates.11
3.0 RESULTS AND DISCUSSION.12
3.1 Chinook Salmon.12
3.1.1 Catch per unit effort.12
3.1.1.1
3.1.1.2
Age 0+..
Age 1+.
i
ARLIS
Alaska Resources
Librarv &Inforrnanofl i';;ervl.ces...
Anchorage.Alaska
12
19
__________~~M"_
TABLE OF CONTENTS (Continued)PAGE
3.1.2 Size ..19
3.1.2.1
3.1.2.2
Age 0+.
Age 1+.
19
23
3.1.3 Mark-and-recapture ......•..23
3.1.3.1 Spatial and temporal distribution .23
3.2 Coho Salmon •.26
3.2.1 Catch per unit effort .26
~)
3.2.1.1
3.2.1.2
Age 0+.
Age 1+and 2+.•.
26
33
3.2.2 5i ze ..36
3.2.2.1
3.2.2.2
Age
Age
0+.
1+and 2+.
36
36
3.2.3 Mark-and-recapture .36
3.2.3.1 Spatial and temporal distribution .36
3.3 Sockeye Salmon.39
Catch per unit effort.3.3.1
3.3.1.1
3.3.1.2
Age
Age
0+....
1+•••••
39
39
41
-
3.3.2 Size •.45
3.3.2.1
3.3.2.2
Age 0+.
Age 1+.
45
45
3.3.3
3.3.4
Mark-and-recapture ...
Population estimates ..•...........................
45
47
3.4 Chum Salmon ..47
3.4.1 Catch per unit effort.47
3.4.2
3.4.3
3.4.4
Si ze •.••••••••••••••
Mark-and-recapture ...
Population estimates ...•..........................
49
49
51
TABLE OF CONTENTS (Continued)PAGE
3.5 Pink Salmon ;.......51
3.5.1 Catch per unit effort.............................51
3.5.2 Size...........................................................................................51
4.0 CONTRIBUTORS..................................................54
5.0 ACKNOWLEDGEMENTS...............................................55
6 ..0 LITERATURE CITED..........................................................................................56
7.0 APPENDICES.......58
Appendix A -Discharge,Temperature,and Turbidity
for Talkeetna and Flathorn Stations,
1985...........................................A-I
Appendix B -Brand Symbols,Release Dates,and
the Number of Fish Branded by Species
and Collection Site in the Middle
Reach of the Susitna River During
the Cold-Branding Program,1984-1985 •..•.....•.B-1
Appendix C -Chum and Sockeye Salmon Cold-
Branding Experiment ...•.....•.....•....•..•.•..C-l
Appendix 0 -Flathorn Station Juvenile Salmon
Catch Data,1985 •.....•..•.....•.......•.•.....0-1
-
-
Appendix E -Length and Weight Relationship Data
for Juven"ile Salmon,1985...............••...•.E-l
iii
_____'7'l'''''....--..IIlI:IIiiIl:,_V ~_
I 'I
LIST OF FIGURES
Fi gure
-
J.
2.
3.
4.
5.
Map of the juvenile salmon study field stations
in the Susitna River basin,1985 ....•......•..........•.......
Map showing the locations of the Flathorn
stationary outmigrant traps (RM 22.4)and the
mobile outmi grant trap samp 1i ng poi nts on the
Susitna River,1985 •...•...•..........•........~.
Map showi ng the reach where juvenil e salmon
mark-recapture sites were located (RM 112.3 to
144.8,and Indian River and Portage Creek)and
the locations of the Ta"lkeetna stationary
outmi grant traps (RM 103.0)and the Talkeetna
River sampling site (TRM 1.0),1985 .....•.•...................
Chinook salmon (age 0+)daily catch per unit
effort and cumulative catch recorded at the
mouth of Indian River,and the catch per trap
by si te by two week peri od recorded at the
mouth site and at the three upper sampling
sites combined in Indian River,1985 .
Chinook salmon (age 0+)daily catch per unit
effort and cumulative catch recorded at the
Talkeetna and Flathorn stationary outmigrant
traps,1985 e •••••••••••••••••••••••••••••••••••••••••••
Chinook salmon (age 0+)daily catch per unit
effort and cumulative catch,and the catch as a
percent of the highest catch per unit volume by
transect point recorded at the Flathorn Station
mobile outmigrant trap,1985 .......•..........................
4
5
6
13
17
18
~i
7•
8.
Chinook salmon (age 1+)daily catch per unit
effort and cumul ative catch recorded at the
Talkeetna and Flathorn stationary outmigrant
traps,1985..20
Chinook salmon (age 1+)daily catch per unit
effort and cumulative catch,and the catch as a
percent of the highest catch per unit volume by
transect point recorded at the Flathorn Station
mobile outmigrant trap,1985..................................21
iv
-
......
LIST OF FIGURES (Continued)
Fi gure
9.
10.
Coho salmon juveniles daily catch per unit
effort and cumulative catch recorded at the
mouth of Indian River,and the catch per trap
by site by two week peri ad recorded at the
mouth site and at the three upper sampling
sites combined in Indian River,1985 .....•......••.....•......
Coho salmon (age 0+)daily catch per unit
effort and cumulative catch recorded at the
Talkeetna and Flathorn stationary outmigrant
traps-,1985 ..
28
31
.-
_.
-
"'"
-
-
""'\
11.Coho salmon (age 0+)daily catch per unit
effort and cumulative catch,and the catch as a
percent of the highest catch per unit volume by
transect point recorded at the Flathorn Station
mobile outmigrant trap,1985..................................32
12.Coho salmon (age 1+and 2+)daily catch per
unit effort and cumulative catch recorded at
the Talkeetna and Flathorn stationary out-
migrant traps,1985 •...•.•••••...•...••.•.~...................34
13.Coho salmon (age 1+and 2+)daily catch per
unit effort and cumulative catch,and the catch
as a percent of the highest catch per unit
voltJme by transect point recorded at the
Flathorn Station mobile outmigrant trap,1985.................35
14.Sockeye salmon (age 0+)daily catch per unit
effort and cumulative catch recorded at the
Talkeetna and Flathorn stationary outmigrant
traps,1985.....................................................................................................40
15.Sockeye salmon (age 0+)daily catch per unit
effort and cumulative catch,and the catch as a
percent of the highest catch per unit volume by
transect point recorded at the Flathorn Station
mobile outmigrant trap,1985..................................42
16.Sockeye salmon (age 1+)daily catch per unit
effort and cumulative catch recorded at the
Talkeetna and Flathorn stationary outmigrant
traps,·1985 III..........................43
......
17.Sockeye salmon (age 1+)daily catch per unit
effort and cumulative catch,and the catch as a
percent of the highest catch per unit volume by
transect point recorded at the Flathorn Station
mobile outmigrant trap,1985 ..........................••......
v
44
LIST OF FIGURES (Continued)
Figure
18.
19.
Chum salmon fry daily catch per unit effort and
cumulative catch recorded at the Talkeetna and
Flathorn stationary outmigrant traps,1985 ..••..........•...
Chum salmon fry daily catch per unit effort and
cumulative catch,and the catch as a percent of
the hi ghest catch per unit vol ume by transect
point recorded at the Flathorn Station mobile
outmigrant trap,1985 .
48
50
~\
52
20.
21.
Pink salmon fry daily catch per unit effort and
cumulative catch recorded at the Talkeetna and
Flathorn stationary outl11igrant traps,1985 ••••......•••.....
Pink salmon fry daily catch per unit effort and
cumulative catch,and the catch as a percent of
the hi ghest catch per unit vol ume by transect
point recorded at the Flathorn Station mobile
outmigrant trap,1985.......................................53
vi
.....
LIST OF APPENDIX FIGURES
APPENDIX A
Figure
Mainstem discharge in the Susitna River
measured at the USGS gaging stations at
Gol d Creek Station and Susitna Station~
1985...................................................A-2
-
.....
A.I.
A.2.
A.3.
B.1.
Ta 1keetna Station water temperature and
turbidity~1985 011 ••••••••
Flathorn Station water temperature and
turbi di ty recorded for the west and east
bank outmigrant traps,1985 ••...•......•.••.....•......
APPENDIX B
Brandi ng 1ocations ~brandi ng location
codes,and sampl e brands used for cold
branding juvenile salmon,1985 .•...•..••.......•••.....
vii
A-3
A-4
B-3
LIST OF APPENDIX FIGURES (Continued)
APPENDIX D
Figure
0.1.
D.2.
0.3.
D.4.
0.5.
0.6.
0.7.
0.8.
Flathorn Station chinook salmon (age 0+)
daily and cumulative catch recorded for
the west bank and east bank stationary
outmigrant traps,1985 .
Flathorn Station chinook salmon (age 1+)
daily and cumulative catch recorded for
the west bank and east bank stationary
outmigrant traps,1985 c ••••••••••••••••••••••••
Flathorn Station coho salmon (age 0+)
da ily and cumul ati ve catch recorded for
the west bank and east bank stationary
outmigrant traps,1985,;..........•.£1 ••11I •••••••••••••••••
Fl athorn Stati on coho salmon (age 1+and
2+)daily and cumulative catch recorded
for the west bank and east bank stationary
outmigrant traps,1985 .
Flathorn Station sockeye sQ.lmon (age 0+)
daily and cumulative catch recorded for
the west bank and east bank stationary
outmigrant traps,1985 .
Flathorn Station sockeye salmon (age 1+)
daily and cumulative catch recorded for
the west bank and east bank stationary
outmigrant traps,1985 oo ••••••••c ••••••••e.
Flathorn Station chum salmon fry daily and
cumulative catch recorded for the west
bank and east bank stationary outmigrant
traps,1985 .
Flathorn Station pink salmon fry daily and
cumulative catch recorded for the west
bank and east bank stationary outmigrant
traps,1985 .,.
viii
0-3
0-4
0-5
0-6
0-7
0-8
0-9
0-10
~I
-
~..
LIST OF APPENDIX FIGURES (Continued)
APPENDIX E
Figure
E.1.Weight/length relationship for juvenile
chinook salmon collected at the Talkeetna
and Flathorn stationary outmigrant traps,
1985 .•..•.••••..•.•.•.•.•..••..•••...".. .. ••. . ••••.. . . ... E-3
E.2.
E.3.
E.4.
E.5.
Weight/length relationship for juvenile
coho salmon collected at the Talkeetna and
Fl athorn stationary outmi grant traps,
1985 .
Weight/length relationship for juvenile
sockeye salmon collected at the Talkeetna
and Flathorn stationary outmigrant traps,
1985 ..
Weight/length relationship for juvenile
chum salmon collected at the Talkeetna and
Fl athorn stati onary outmi grant traps,
1985 .
Weight/length relationship for juvenile
pink salmon collected at the Talkeetna and
Fl athorn stationary olJtmi grant traps,
1985 ..
E-4
E-5
E-6
E-7
E.6.Chinook salmon (age 0+)cumulative catch
and biomass recorded at Talkeetna and
Flathorn stations,1985.................................E-8
E.7.Chinook salmon (age 1+)cumulative catch
and biomass recorded at Talkeetna and
Flathorn stations,1985.................................E-9
E.8.Coho salmon (age 0+)cumulative catch and
biomass recorded at Talkeetna and Flathorn
stations,1985................................................................................E-I0
E.9.Coho salmon (age 1+and 2+)cumulative
catch and biomass recorded at Talkeetna
and Flathorn stations,1985 ...•...•................•....E-l1
E.10.Sockeye salmon (age 0+)cumulative catch
and biomass recorded at Talkeetna and
Flathorn stations,1985 •.•....•.......................•.E-12
ix
LIST OF APPENDIX FIGURES (Continued)
Figure
E.l1.Sockeye salmon (age 1+)cumulative catch
and biomass recorded at Talkeetna and
Flathorn stations,1985 ....••..••••••.••..•••...••.•.•..E-13
E.12.Chum salmon fry cumulative catch and
biomass recorded at Talkeetna and Flat-
horn stations,1985 ......•.........................•....E-14
E.13.Pink salmon fry cumulative catch and
biomass recorded at Talkeetna and Flat-
horn stations,1985 ......•.••......•...........••.......E-15
x
....,
-
.-,
LIST OF TABLES
Table
1.
2.
Chi nook salmon (age 0+)catch per trap by
sampling date for Portage Creek,1985 ....•.........•.........
Chinook salmon (age 0+)catch per trap by site
and sampling date for the three upstream sites
in Indian River,1985 .......•..........•.....................
14
14
...,3.
4.
Chinook salmon (age 0+)catch per trap and the
number of branded fish recaptured by site and
date for the 14 selected sites in the middle
reach of the Susitna River,1985 •••••••..•.•••....•......•.•.
Chinook salmon (age 0+)mean total length,
range of 1engths,and associ ated confi dence
intervals by site and sampling period in the
Susitna River,1985 .
16
22
5.Release and recapture data for the cold-
branded chinook and coho salmon juveniles
recaptured at the Talkeetna Station outmigrant
traps,1985 .25
-
6.
7.
Coho salmon (age 0+)catch per trap by
samp 1i ng date for Portage Creek,1985 ....•••.......•...••...•
Coho salmon (age 0+)catch per trap by site
and sampling date for the three upstream sites
in Indian River,1985 .
27
27
30
Coho salmon (age 0+)catch per trap and the
number of branded fish recaptured by site and
date for the 14 selected sites in the middle
reach of the Susitna River,1985 ..•.•..•....•......•.•••.•..•
9.Coho salmon (age 0+)mean total length,range
of 1engths,and associ ated confi dence inter-
vals by site and sampling period in the
Sus;tna Ri ver,1985..........................................37
8.
10.Coho salmon (age 1+)mean total length,range
of lengths,and associated confidence inter-
vals by site and sampling period in the
Susitna River,1985..........................................38
11.Sockeye salmon (age 0+)mean total length,
range of 1engths,and associ ated confi dence
intervals by site and sampling period in the
Susitna River,1985..........................................46
.-.xi
LIST OF APPENDIX TABLES
APPENDIX A
Table -
A.1.
A.2.
B.1.
B.2.
B.3.
C.l.
Tal keetna Station water temperature and
turbidity,1985 Cl .
Flathorn Station water temperature and
turbidity recorded for the west (trap 1)
and east (trap 2)bank outmigrant traps~
1985 .
APPENDIX B
Brand symbol,release dates~and the
number of fi sh branded by speci es and
collection site in the middle reach of
the Susitna ·River during the summer
cold-branding program~1985 •...•••..•..•••.•....•...•.•.
Brand symbol ~release dates,and the
number of fi sh branded by speci es and
collection site in the middle reach of
the Susitna River during the winter
cold-branding program,1985 •.....••.••.•.•••......•.•.••
Brand symbol,release dates,and the
number of fi sh branded by speci es and
collection site in the middle reach of
the Susitna River during the summer
cold-branding program,1984 •.•••.•••..•.•...•........•..
APPENDIX C
Mortality and brand clarity over a two
week period for chum and sockeye salmon
fry cold branded for three branding
durations,1985 .
xii
A-5
A-6
B-4
B-6
B-7
C-2
LIST OF APPENDIX TABLES (Contfnued)
APPENDIX 0
Table
F
i
I
0.1.Flathorn Station chinook salmon (age 0+)
daily and cumulative catch recorded for
the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985....................................................D-11
D.2.Flathorn Station chinook salmon (age 1+)
daily and cumul ati ve catch recorded for
the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985.. •••••••. •••. ••••••••••••••..•••••• •. . •••••••••. . • ••0 -13
0.3.Flathorn Station coho salmon (age 0+)
daily and cumulative catch recorded for
the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985....................................................D-15
D.4.Flathorn Station coho salmon (age 1+and
2+)daily and cumulative catch recorded
for the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985 0-17
D.5.Flathorn Station sockeye salmon (age 0+)
daily and cumulative catch recorded for
the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985.• ••••••. •••••••. . ••••. ••••••••••• •. •••••••••••••••• D-19-
-
0.6.
D.7.
D.8.
Flathorn Station sockeye salmon (age 1+)
dai ly and cumul ati ve catch recorded for
the west bank (trap 1)and east bank
(trap 2)stationary outmigrant traps,
1985 ••••••..••.•..•••••.••••••••••••••••••..••.•••.•••.•D-21
Flathorn Station chum salmon fry daily
and cumulative catch recorded for the
west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps,1985 .••••.•.••••...•••••.••D-23
Flathorn Station pink salmon fry daily
and cumulative catch recorded for the
west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps,1985 •••••.••...••••••••.••.D-25
xiii
------.-._------------------------------------
1.0 INTRODUCTION
Studies have been conducted since 1982 to describe the periods of
freshwater residence,size,and timing of outmigration for juvenile
salmon in the Susitna River and to provide population estimates for the
reach of river between the Chul itna River confluence and Devil Canyon
(middle reach).These data have been collected as part of the
environmental assessment program to provide a basis of comparison
between past,current,and future juvenile salmon populations in the
Susitna River.Coupled with a long-term monitoring program,these data
would be used to identify changes to these populations resulting from
the proposed hydroelectric development.This report presents the
results of the juvenile salmon outmigration studies conducted on the
Susitna River between Cook Inlet and Devil Canyon during the 1985
open-water season.Five Pacific salmon species were studied:chinook
(Oncorh nchus tshawytscha),coho (Q.ki sutch),sockeye (Q.nerka),chum
{Q.keta ,and pi nk (Q.gorbuscha).
Investigations of the distribution,abundance,and migration of juvenile
salmon during 1982 and 1983 were focussed primarily on the middle reach
of the Susitna River (ADF&G 1983;Schmidt et ale 1984).These studies
included the operation of stationary inclined plane outmigrant traps at
Talkeetna Station,riv_er mile (RM)103.0 during 1982 and 1983 and a
mark-recapture program for post-emergent chum and sockeye salmon fry
using half-length coded wire tags in 1983 (Roth et ale 1984).
--
During the 1984 and 1985 open-water seasons,additional tasks were added·
to further describe juvenile salmon size,migration timing,and their
response to changing habitat conditions.The study area was expanded to
include the entire river between Cook Inlet and Devil Canyon.
Outmigrant trapping was begun at Flathorn Station (RM 22.4)in the lower
reach,and a cold brand mark-recapture program on juvenile chinook and
coho salmon was initiated in the middle river reach.
The proposed objectives of the 1985 juvenile salmon program were:
o Monitor the timing,size,and relative abundance of all five
species of juvenile salmon outmigrating from the middle reach
of the Susitna River.
Estimate the population of ol.ltmigrating chum and sockeye
salmon fry and their survival from egg to outmigrant fry in
this reach of river.
o
o Monitor the effects of changes in mainstem Susitna River
dicharge and other environmental variables on juvenile salmon
outmigration rates and timing.
o Monitor the timing,rate of movement,and population size of
juvenile chinook and coho salmon outmigrating from Indian
River.
-
o Estimate the overwintering survival of juvenile chinook salmon
in the middle river reach.
1
-~-------------------
o Monitor the timing,size,and relative abundance of juvenile
salmon outmigrating from the Susitna River into Cook Inlet
past Flathorn Station.
Continue the collection of data on the relative timing,
abundance,and size of migrating juvenile resident fish.
o
o
Describe
migrating
migration
movement.
the horizontal distribution of juvenile salmon
past Fl athorn Stati on to determi ne the paths of
and the effects of various habitat variables on this
-
As the field season came to a close,it became apparent that reporting
of all the data as proposed would not be possible for several reasons of
which the loss of biometric support because of program funding
reversals,was paramount.The loss of funding and the associated
services of a biostatistician resulted in the modification of reporting
objectives to a level of basic biological findings readily apparent from
the data base.Subject areas contained in the proposed objectives that
were not reported include the estimated population sizes of juvenile
chinook and coho salmon in the middle river,survival estimates for age
1+chinook and age 0+sockeye and chum salmon,and the effects of habitat
variables on juvenile salmon outmigration rates and timing.Similarly,
funding cuts forced the cancellation of the Resident Fish report which
was to present the information on the timing,abundance,and size of
migrating juvenile resident fish.
Population estimates of juvenile chinook and coho salmon outmigrating
from Indian River and from the middle river reach were not reported
because the original program design was for an estimate of a closed
population.Many of the assumptions for this type of model could not be
met due to the extended period of time juvenile chinook and coho salmon
spend in the study areas before outmigrating.When it became apparent
that an open population model was necessary to estimate these
populations,the program had already lost the funding required to
support the biometric analysis.
The closed population estimate model originally proposed was found to be
suitable for juvenile chum and sockeye salmon outmigrating from the
middle river reach and estimates for these species are reported.
2
~I
.....
2.0 METHODS
2.1 Study Locations
Observations of the relative abundance,outmigration timing,and the
size of juvenile salmon in the Susitna River were observed at study
sites from Flathorn Station,at river mile (RM)22.4,upstream to
Portage Creek (RM 148.8)during the 1985 open-water season (Fig.1).
Outmigrant trapping was conducted at two sites in the mainstem river and
mark-recapture programs were conducted at 22 tributary,slough and side
channel sites in the middle river.
2.1.1 Stationary traps
Two stationary outmigrant traps were deployed on the mainstem Susitna
River below the Yentna River confluence (RM 28.5)at Flathorn Station.
One trap was fished off the west bank at RM 22.4 (Trap 1)and the other
off the east bank at RM 24.6 (Trap 2)(Fig.2).Trap 2 was relocated to
RM 22.3 on August 30 due to the interference of an emerging gravel bar
at the upstream sampling site.
Two stationary outmigrant traps were deployed on the mainstem Susitna
River above the Chulitna River confluence at Talkeetna Station (RM 103)
at the same locations used during 1983 and 1984.One trap was fished
off the east bank (Trap 1)and the other off the west bank (Trap 2)of
the river (Fig.3).
2.1.2 Mobile trap
A mobile outmigrant trap was operated ups~ream of Flathorn Station at 12
established points along a transect between the east and west bank at RM
25.4 (Fig.2).
2.1.3 Coded wire tagging
The coded wire tagging sites were selected from those locations above
the Chulitna River confluence where high density chum and sockeye
spawning was recorded (Barrett et ale 1985)and from ground surveys
which established the availability of sufficient numbers of
post-emergent chum and sockeye salmon fry for collection and tagging
(Fig 3).High water conditions during the tagging period (May 22
through June 27)limited these sites during 1985 to Slough 8A (RM 125.3)
and Slough 11 (RM 135.3).
2.1.4 Cold branding
The cold brand mark-recapture program was conducted at sites in Indian
River (RM 138.6)and Portage Creek (RM 148.8)which were found to
contain large concentrations of juvenile chinook and coho salmon (Fig.
3).Four sampling sites were established in Indian River [site 1 (TRM
0.0),site 2 (TRM 1.9),site 3 (TRM 2.3),and site 4 (TRM 11.9)J and two
sites were established in Portage Creek (TRM 0.0 and TRM 5.1).Cold
branding was also conducted at Side Channel lOA (RM 131.6)and Slough 15
(RM 138.3).
3
~i
~
~
0 10 20 30
I I I I
MILES
(Approx.Scale)
TALKEETNA~~~A
STATION
~\
Fi gure 1.Map of the juvenile salmon study field stations in the Susitna River
basin,1985.
4
STATIONARY TRAP 2
AUGUST30-SEPTEMBER 23
•'.
MOBILE TRAP
TRANSECT--....,
STATIONARY TRAP I
~I I
WILE:
(Appro&,Seel.)
-~0
-
Figure 2.Map showing the locations of the Flathorn stationary outmigrant
traps (RM 22.4)and the mobile outmigrant trap sampling points on
the Susitna River.1985.
5
10,
MILIES
CODED WIRE TAGGING a
COLD BRANDING SITES
RIVER MILE
o
I
_--__v 0
Talk ••tP>
Talkeetna Station
Ollt",iljlrant
Traps
Figure 3.Map showi ng the reach where juvenil e salmon mark-recapture sites
were located (RM 112.3 to 144.8,and Indian River and Portage Creek)
and the locations of the Tal keetna stationary outmigrant traps (RM
103.0),1985.
~I
6
Sampling to monitor the redistribution of branded fish from the marking
sites was conducted at sites in the middle river which were observed to
have rearing chinook and coho salmon juveniles (Fig.3).The following
14 sites were sampled:
Sampling Site Ri ver Mil e
1~
Slough 6A 112.3
Slough 8A 125.3
~Slough 9A 133.6
Slough 10 133.8
Sidechannel IDA 133.9
Slough 14 135.9
Slough 15 137.2
Slough 16 137.7
Slough 17 138.9
Slough 19 139.7
Slough 20 140.1
Slough 21 142.0
Anna Creek Slough 143.2
Slough 22 144.3
,'''',.
2.2 Fiel d Data Collection and Recording
'"'"
2.2.1 Stati ona ry traps
Descriptions and dimensions of the stationary outmigrant traps are
provided in ADF&G (1983).The Susitna River discharge information for
the middle river at Gold Creek Station (RM 136.8)and for the lower
river at Susitna Station (RM 26.0)are presented in Appendix A.
2.2.1.1 Flathorn Station
The stationary outmigrant trap on the west bank of the Susitna River at
Flathorn Station was operated from May 27 through September 23,1985.
The east bank trap was operated from May 28 through September 23,1985.
The traps were fished for 12 hours per day from approximately 0700 to
1900 hours.High debris levels precluded continuous 24 hour sampling at
Flathorn Station.The traps were cleaned at one to three hour intervals
throughout the fishing period to maintain optimum trap efficiency.Trap
checks,including the sampling of collected fish and associated habitat
parameters.were conducted from one to three times for each daily
fishing period.To detect any obvious diurnal variations in fish
movement pas t the samp 1i ng sites.the t ra ps we re opera ted on a
continuous schedule from approximately 0700 hours of the first day to
approximately 1900 hours of the following day once each week for eight
weeks from June 29 through August 24.
All juvenile fish captured were anesthetized using MS-222 (Tricaine
methanesulfonate).Field specimens were identified to species using the
guidel ines set forth by McConnell and Snyder (1972),Trautman (1973),
....,
7
and Morrow (l980).Juvenile chinook and coho salmon were checked for
cold brand marks and chum fry and sockeye juveniles were checked for
adipose fin clips.Biological data were recorded for all fish collected
at the traps.The fish were then held until recovery from the
anesthetic was complete before being released downstream of the traps.
The biological data recorded included catch by species and age class for
each trap check.In addition,total lengths were recorded to the
nearest millimeter (mm)for a daily sample of up to 50 fish per species
and age class captured in each trap.Three samples for each one
millimeter length increment through the range of lengths collected were
drawn monthly and weighed to the nearest 0.1 gram.Scale samples for
chinook,coho,and sockeye salmon juveniles were collected during two
week intervals from a sub-sample of three fish drawn from samples of
fish grouped into five millimeter groupings for each species.
Water temperature (Co)and turbidity (NTU)were recorded daily at each
trap (Appendix A).The depth the traps were fished (feet),the water
velocity (feet per second),and the mainstem river stage data (as
determined from staff gages)were recorded during each trap check.The
depth fi shed was recorded from the water surface to the bottom of the
leading edge of the inclined plane.The trap fishing depth ranged from
1.0 to 3.3 feet.Velocity measurements were taken with a Marsh-McBirney
velocity meter in front of the inclined plane at one-half of the depth
fished.Biological and habitat data were entered onto field data forms
and then into an Epson HX-20 microcomputer in the field.Computer
entries were made for each trap check throughout the field season.
2.2.1.2 Talkeetna Station
The stationary outmigrant trap on the east bank of the Susitna River at
Tal keetna Station was operated from May 27 through October 12,1985.
The west bank trap was operated from May 31 through October 12,1985.
The traps were fished continuously through the open-water season.Data
were collected similar to the procedures outlined for Flathorn Station
(Section 2.2.1.1)except that as the Susitna River is a single channel
at Talkeetna Station,water temperature and turbidity were measured only
at the east bank trap (Appendix A),and weight and scales were obtained
from samples drawn from the daily catch from both traps.Chum and
sockeye salmon juveniles with a clipped adipose fin were passed through
a detector to verify the presence or absence of a coded wire tag.All
fish with coded wire tags recovered at the traps were preserved and the
tags were later removed and decoded.Juvenile chinook and coho salmon
collected at the traps were checked for a cold brand mark and all
recovered marks were recorded.
2.2.2 Mobile trap
The mobile outmigrant trap was designed similarly to the stationary
traps.The trap is 34 feet long and 11 feet wide with an inclined plane
measu ri ng 4.5 feet wi de and 13 feet long.The trap is capable of
8
""'"
~'
-
-
.....
-
,-
fishing to a maximum sampling depth of six feet.The trap is powered by
two 50 horse power outboard engines equipped with 10.5 inch diameter by
13.0 inch pitch propellers.
The mobile trap was operated from June 6 through August 24 at Flathorn
Station to sample the horizontal and vertical distribution of juvenile
salmon.For five days each week during the sampling season,the mobile
trap was fished for 15 to 20 minutes daily within each of the 12
horizontal strata along the transect line to establish horizontal
distribution.
Positions of the mobile trap along the transect line were determined by
sightings between fixed targets placed on the east and west banks of the
river.Position at each transect sampling point was maintained by
deploying an anchor from the bow of the trap.If substrate or velocity
prevented the anchor system from maintaining trap position,the trap was
held in place using the engines.Data recorded for the mobile trap at
each sampling point included transect point number,depth fished (feet),
velocity (feet per second),total time fished (minutes),species
composition,and total length for each fish captured.
2.2.3 Coded wire tagging
Coded wi re tagging of post-emergent chum and sockeye salmon fry was
conducted from May 22 through June 27,1985.The coded wi re tagging
equipment,implantation procedures,fish collection techniques,and data
recording were similar to those outl ined by Roth and Stratton (1985)
except that 200 fish per tagging day (compared to 100 fish in 1984)were
sampled in 1985 to determine the tag retention rates.
2.2.4 Cold branding
Mark-recapture studies were conducted from July 3 through October 12 to
monitor distributional behavior of chinook and coho salmon in the middle
river.Trapping at the mouth of Indian River was conducted daily while
sites in Portage Creek and upper Indian River were sampled every four
days.Ba i ted mi nnow traps or beach sei nes were used to capture fi sh
which were then transported to Gold Creek and held overnight,before
being branded the following day.Fish were held for four days after
branding to determine marking mort{ility before being released at the
sites of capture.
The branding equipment and procedures were the same as those outlined by
Roth and Stratton (1985).Juvenile chinook and coho salmon were branded
with a distinctive mark to signify the collection site and period of
their capture.Brands for Indian River mouth were changed every seven
days.The brands at all other sampling sites were changed every eight
days.Total length measurements were taken from a sub-sample of 50 fish
drawn from the catch for each time period and capture location for all
species.Data recorded were the same as that outl ined by Roth and
Stratton (1985).Brand symbols,release dates,and the number of fish
branded by species and collection site during the cold-branding program
are presented in Appendix B.
9
Minnow trap sampling was conducted at the 14 mainstem side channel and
slough sites three to five times during the season.The number of fish
captured,the number of marked fish recaptured,and the brand symbols of
these marked fish were recorded.
Chum and sockeye salmon fry were experimentally cold branded to test the
feasibility of this technique as a more cost-effective marking procedure
than the use of coded wi re tags.The results of thi s experiment are
presented in Appendix C.
2.3 Data Analysis
2.3.1 Juvenile salmon catch per unit effort
The stationary trap data for both Flathorn and Tal keetna stations are
for both bank traps combined because of the similarity in the beginning
and end points of the outmigration (timing)recorded for both traps at
each site.The catch data recorded for juvenile salmon at the
stationary outmigrant traps are presented as the average catch per hour
for each calander day of sampling effort.Tables of the raw catch data
and figures of the catch per unit effort (CPUE)data for each trap at
Flathorn Station are presented by species and age class in Appendix D.
The catch at Tal keetna and Flathorn stations were expanded to 24-hour
fishing periods by dividing the number of hours fished on a given day
into 24 and then multiplying this ratio by the catch for each species
and age class.This calculation was done so that each day's effort was
weighted equally for presentation as cumulative catch.The CPUE plotted
for each species and age class of juvenile salmon collected at the
stationary traps at both sites were calculated using the von Hann linear
filter (Dixon et al.1981)as presented in Roth and Stratton (1985).
The cumulative catch totals were adjusted for days not fished by
tabulating the mean of the total catches recorded for the three days
preceding and the three days following an unsampled day.
The mobile trap catch data were adjusted for the days not fi shed by
tabulating the mean of the total catches recorded for the day preceding
and the day following an unsampled day.These catch rates were then
smoothed for graphic presentation using the linear filter.Due to the
large differences between velocities at each sampling stratum,the
horizontal distribution data collected at Flathorn Station are presented
as the catch per unit volume rather than catch per unit time.
A linear regression of the natural logarithm of weight versus the
natural logarithm of length for each of the salmon species was
calculated (Le Cren 1951).The regression equations were used to
provide estimates of the total biomass passing the Talkeetna and
Fl athorn stati on outmi grant traps by two week sampl i ng peri od through
the season (Appendix E).
10
-
2.3.2 Population estimates
Popul ation estimates for chum and sockeye salmon fry were cal cul ated
using the methods outl ined in Roth and Stratton (l985)except that in
addition to the Schaefer (1951)method,population estimates were also
generated using the Peterson estimate outlined by Chapman (1951).The
Petersen estimate was i I1cl uded because the Schaefer method does not
provide a calculation of confidence intervals for the population
estimates.
11
3.0 RESULTS AND DISCUSSION
In this report,fry are defined as age 0+fish while the term juvenile
is used to describe the group of all age classes of salmon prior to
their entry into the ocean.
Observations of the catch per unit effort (CPUE),size,distribution,
and abundance of juvenile salmon are presented by species and age class.
The CPUE information is presented for Talkeetna and Flathorn stations to
allow comparisons of the timing of outmigration past these two sites.
However,as the mi ddl e river spawning escapements represent 1ess than
10%(estimated from the data presented by Thompson et al.1986)of the
total escapement into the Susitna River drainage,peak juvenile salmon
catches recorded at Flathorn Station should not be considered a primary
result of fish outmigrating from the middle reach.Rather,the Flathorn
Station catches are made up of fish produced throughout the drainage.
3.1 Chinook Salmon
3.1.1 Catch per unit effort
3.1.1.1 Age 0+
A total of 3,905 age 0+chinook salmon were collected during surveys of
Portage Creek (RM 148.8)from July 9 through September 25,1985.
Sixty-one percent of the fish were collected by seining in the upstream
site (TRM 5.1).Trapping at the mouth (TRM 0.0)and at the upstream
site accounted for the remaining 39%.Trap catches ranged from a high
of 15.3 fry per trap on August 9 to 2.2 fry per trap on August 21 (Table
1).Peak catches were also recorded during the initiation of sampling
in early July and again in mid-September.
Surveys of Indian River sites (RM 138.6;TRM 0.0 to 11.9)collected
32,260 age 0+chi nook salmon from July 3 through October 10,1985.
Eighty-one percent of the season trapping effort in this tributary was
conducted at the mouth (site 1)and accounted for 62%of the fi sh
collected in Indian River.
Chinook fry catches at Indian River mouth were highest during early July
with the peak mean catch of 32 fry per trap recorded on July 9 (Fig.4
upper).By the end of July,Indian River discharges were rising to the
point that the associated high water velocities appeared to reduce the
habitat quality at the sampling sites.These high flows also resulted
in decreased trap efficiency.Catches declined in the first two weeks
of August and peak flood discharges which prevented sampling were
observed in Indian River from August 14 through 17.Sampling was
resumed at the mouth site on August 17 and a second peak in catch rates
(16 fish per trap)was recorded the following day.The higher catches
were possibly due to increased trap efficiency with lower flows and the
collection of fry which had been displaced from areas upstream during
the high flow period.Declining catches at the mouth of Indian River
after the August peak may have been a result of a reduction in the
12
'""'"
-
-.
~,
INDIAN RIVER MOUTH.1985
CHINOOK SALWON flf'f ~UE
100
30
F"'"'
~O
80
do
<I(
70 a::
20,119'TOTAL SEASON CATCH I-
20eo0,<"OF HIGHEST CPUE a::
i lo.I-_%OF CUMULATl'lE CATCH do
~:::t:
(,J
I-
!\~<I(040 (,J..-
10 z
30 <I(
lo.I
::E
"""20
to
0 0.-
JULY AUG OCT
Q4l!;
,-INDIAN RIVER CHINOOK SALMON FRY
8V.STE IfY 1WO WEEK PERIOD.1885
E OCT
---SITE I (MOUTH)
---SITES 2,3,4 (COM8INED)
E AUG L AUG E SEP L SEP
SAWPUNO PERIOD
t.JUt
34.......-------------------------,
32
30
28
25
204
22
20
18
15
104
12
10
I
5
04
2-+----..------r-----T---.,..----~------t
E JUt
-
-
-
..-
Figure 4.Chinook salmon (age 0+)daily catch per unit effort and cumulative
catch recorded at the mouth of Indian River (upper figure)and the
catch per trap by site by two week period at the four sampling sites
in Indian River (lower figure),1985.
13
number of downstream migrating fry to replace those fish which were
captured and removed from the sampling site.Also,decreasing
discharges may have caused a reduction in the amount of available
rearing habitat.
Table 1.Chinook salmon (age 0+)catch per trap by sampling date for Portage Creek,1985.
Sampling Number Number Catch Sampling Number Number Catch
Date Caught of Traps Per Trap Date Caught of Traps Per Trap
12-Jul 276 25 11.0 29-Aug 122 20 6.1
19-Jul 81 20 4.1 03-Sep 85 20 4.3
20-Jul 59 20 3.0 07-Sep 155 20 7.8
09-Aug 153 10 15.3 11-Sep 129 10 12.9
17-Aug 48 5 9.6 17-Sep 132 20 6.6
21-Aug 44 20 2.2 25-Sep 96 20 4.8
25-Aug 130 20 6.5
Chinook fry were more abundant in the three upstream sites as the
average CPUE for the three upper sites combined was higher than at the
mouth (Fig.4 lower).Nineteen percent of the effort was concentrated
in the three upstream sites which accounted for 38%of the total chinook
fry caught in Indian River.Chinook fry catches at sites 3 and 4,the
two uppermost sampling sites in Indian River,were highest in early July
whi le the peak catch per trap day in the next lower site (site 2)
occurred in early August (Table 2).Similar to the observations for
chinook fry catches at the mouth of Indian River (site 1),an increase
in catches was recorded at all upper Indian River sites following the
high discharge period in mid-August.The increase in catches may have
been a result of increased trap efficiency (lower flows)and the
addition of fry from upstream areas.
Table 2.Chinook salmon (age 0+)catch per trap by site and sampling date for the three
upstream sites in Indian River,1985.
SITE 2 SITE 3 SITE 4
Sampling Number Number Catch Number Number Catch Number Number Catch
Date Caught of Traps Per Trap Caught of Traps Per Trap Caught of Traps Per Trap
06-Jul 175 10 17.5 549 10 54.9 198 10 19.8
10-Jul 98 9 10.9 773 10 77.3 282 9 31.3
14-Jul 195 10 19.5 365 10 36.5 232 10 23.2
18-Jul 313 10 31.3 527 10 52.7 109 10 10.9
24-Jul 203 10 20.3 511 10 51.1 176 10 17.6
28-Jul 319 10 31.9 227 10 22.7 158 10 15.8
01-Aug 272 10 27.2 366 10 36.6 128 10 12.8
OS-Aug 418 10 41.8 250 10 25.0 115 10 11.5
09-Aug 318 10 31.8 165 10 16.5 162 10 16.2
17-Aug 147 10 14.7 133 10 13.3 107 10 10.7
21-Aug 298 9 33.1 186 10 18.6 151 10 15.1
25-Aug 400 10 40.0 280 10 28.0 66 10 6.6
29-Aug 303 10 30.3 245 10 24.5 61 10 6.1
03-Sep 241 10 24.1 65 10 6.5 42 10 4.2
07-Sep 187 10 18.7 40 10 4.0 42 10 4.2
ll-Sep 274 10 27.4 62 10 6.2 32 10 3.2
17-Sep 178 10 17.8 92 10 9.2 67 10 6.7
25-Sep 248 10 24.8 169 10 16.9 45 10 4.5
01-0ct 252 10 25.2 95 10 9.5 29 10 2.9
14
.....
--
-
-
Fourteen slough and sidechannel sites (page 10)between Portage Creek
and Talkeetna Station (RM 103.0)were each sampled with minnow traps
three to five times between late July and early October to determine the
extent of redistribution of chinook fry in the middle river (Table 3).
No spawning of chinook salmon has been recorded at any of these sloughs
and sidechannels (Barrett et al.1985).High catches of fry at these
sites indicates that they provide important rearing habitat for fry
which have outmigrated from their natal tributaries.Trap catches and
recaptures of branded fish were highest at sites that were in close
proximity to the two marking sites,Indian River and Portage Creek.The
highest CPUE at the 14 sampl ing sites was recorded at Slough 22 on
August 29 (47.2 fish per trap).
The timing of age 0+chinook salmon outmigration was similar at both
Talkeetna and Flathorn stations during 1985 (Fig.5).Ninety percent of
the total season catch was recorded during July and August at both
stations.
A total of 16,570 chinook salmon fry were collected in the Talkeetna
stationary outmigrant traps during 1985.Peak catches were recorded
from early July through late August with the highest catch of 24.7
chinook fry per hour recorded on July 6 (Fig.5 upper).Outmigration
began on July 1 with 50%of the season's catch recorded by July 18.A
smaller peak in catches was recorded in the traps on August 18.This
peak corresponds with the high catches recorded for chinook fry at the
mouth of Indian River during this same period (Fig.4 upper)and may
have been due to migrating fry which were displaced from Indian River
during the high flows.Ninety-five percent of the catches at Talkeetna
Station were recorded by late August although chinook fry were captured
through the remainder of the sampling season at this site.
The stationary traps at Flathorn Station collected 5,338 chinook fry
with peak catches recorded from late June through late August (Fig.5
lower).The chinook fry catches at this site peaked at 6.2 fish per
hour on July 6 with 50%of the captures recorded by July 22.Similar to
Talkeetna Station,95%of the season's catch of chinook fry at Flathorn
Station was recorded by late August indicating similar outmigration
timing for chinook fry in both reaches during the 1985 open-water
peri od.
Catches of the 466 chinook salmon fry collected in the mobile outmigrant
trap during the horizontal distribution studies peaked in mid-July and
again in mid-August (Fig.6 upper).Fifty percent of the catches were
recorded by July 29.As recorded by the stationary traps at this site,
chinook fry outmigration had begun by the end of June and,as shown by
the slope of the cumulative catch,was comparatively steady through
mid-August.Chinook fry were captured primarily at the two bank
transects (Fi g.6 lower).Thi rty-two percent of the 466 chi nook fry
captured in the mobile trap were collected at the two bank transects
which represented only 17%of the horizontal sampling effort indicating
a tendency for chinook fry to migrate near the banks of the river.
15
Table 3.Chinook salmon (age 0+)catch per trap and the number of branded
fish recaptured by site and date for the 14 selected sites in the
middle reach of the Susitna River,1985.
:i.1'pluq TDhl Cltch I of Fish Ptrctnt
Sih Dlte C.tch Ptr tnp ktCipturtd kfuptun
=Z=ZC.C==&=&~=:S2===&•••=K:K.=S=&.=&:=.=~&.=.Kaa.a •••&=;==c===a~==.
Slou~h bA B/6 393 39.3 B 2,(1
,~IRK 12.3).8117 103 10.3 (I 0.0
9/3 11 1.1 0 0.0
9/22 15 1.5 0 0.0
-------------------------------------------------------------------SIDU~h 8A 8/24 65 b.5 0 (1.0 ~
(RK 25.3)9/b 18 1.8 (I 0.0
9126 l1B 11.B 1 0.8
-------------------------------------------------------------------SlOU1h 9A 8/23 22 2.2 1 4.5 -,IRIl 33.6)9111 48 4.B 3 6.3
9126 56 5.6 3 5.4----------------------------------------------------...
Slou~h 10 8/7 46 4.6 1 2.2
(RJ1 33.8)8/25 61 b.l 1 1.0
916 234 23.4 1 0.4
9127 176 11.6 3 1.1
-------------------------------------------------------------------SidKhilnn!l lOA 8/24 37 3.7 0 0.0
IR.l!U3.9)9/6 208 20,8 2 1.0
10/4 248 9.9 3 1.2
-----------------------------------------.-------------------------Slaut 14 BI23 128 12.8 2 1.0
(RK 35.9)9/11 83 8.3 2 2.4 """"9127 49 4.9 1 2.0
--------------------------------------------.--.--.--.------------Slou1h 15 8120 368 36.8 11 3.0
(RII 37.2)9/2 344 34.4 10 2.9 ~
9/19 352 35.2 10 2.8
9/28 696 27.8 11 1.6----.--.----------------
SlOU1h 16 1129 B4 8.4 2 2.4 ~(Rtf 37.1J B/12 291 29.1 6 2.1
B/29 51 5.1 5 9.8
9/14 180 18.6 5 2.7
1011 252 25.2 8 3.2
------------------------------------------------------------------Slou1h 11 8/18 78 7.B 1 1.3
(RII ..38.9)9/2 80 8.0 0 0.0
9/19 60 6.0 0 0.0
------.--.---------------------------------------------------~~
SlOU~lI 19 8/12 9 0.9 0 0.0
(RI'I 39.1J 9/2 25 2.5 0 0.0
9119 36 3.6 0 0.0
---------.--.---------------------------------------.-------------S1ou1h 20 1131 14 1.4 0 0.0
(RK 40.1)9/5 30 3.0 0 0.0
9/21 21 2.1 0 0.0
-----------------------------------------------------------------Sloufh 21 7129 1 0.1 0 0.0 ~
IRK 42.0)a/18 41 4.1 0 0.0
9/5 39 3.9 0 0.0
9/21 118 11.8 0 0.0
---------.--.------------------------------------------------------Anni Creek Slough 7/29 75 7.5 0 0.0 ~l
lRK 143.2)8/18 115 11.5 0 0.0
9/5 207 20.1 0 0.0
9/21 305 30.5 0 0.0
-------------------------------------------------------------------~
SlDu,h 22 1129 13 1.3 0 0.0
(Rl'I 44.3)8/12 368 36.B 0 0.0
8/29 472 47.2 2 0.4
9/14 374 37.4 0 0.0
10/9 247 24.7 0 0.0
-------------------------------------------------------------------
16 ""',
TALKEETNA STATION CHINOOK 0+
1985
1 00 I-----~A-------:::=:::::::::;;;;;----_,
,.-
-
~z·W
U
~
W
Q..
90
80
70
60
50
40
.'30
20
10
JULY
16,570 %TOTAL SEASON CATCH
%OF HIGHEST CPUE
-----%OF CUMULATIVE CATCH
OCT
20
0::
15 5
:I:
0::
UJa..
10 :I:
U
~
<tu
5
DATE
FLATHORN STATION CHINOOK 0+
1985
:I:
2 u
~
<t
u
6
4 0::
::>o
:I:
3 0::
UJ
a..
OCTSEP
5,338 =TOTAL SEASON CATCH
--%OF HIGHEST CPUE 5
- %OF CUMULATIVE CATCH
AUGJULYJUNE
10
50
90
70
30
60
80
20
1 00 -r--------.-----------;;;;---~--___,
~w
U
~
W
Q.-
-
DATE
Figure 5.Chinook salmon (age 0+)daily catch per unit effort and cumulative
catch recorded at the Talkeetna (upper figure)and Flathorn (lower
figure)stationary outmigrant traps,1985.
17
I I
~i
-
2
7
8
6 a::
Jo
5 ::I:
a::
4 ~
•10 11•
JUL '8
~TE
3 •a •7
'TRANSECT ~lNT
2
.JUN 15
466 =TOTAL SEASON CATCH
%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
o
to
70
ao
eo
10
rLATHORN STATION CHINOOK 0+
WOBILE TMP ~UE ,I.
I 00 .....-------===~:....::...--=-------...,-__::;;i"
FLATHORN STATION CHINOOK 0+.1985
HORIZONTAL D1STRIIIUTlON
tOO ~'7'T-------------------,
20
.-z 70
wo
a::eow
CL
Figure 6.ChinoOK salmon (age 0+)daily catch per unit effort and cumulative
catch (upper figure)and the catch as a percent of the highest catch
per unit volume by transect point (lower figure)recorded at the
Flathorn Station mobile outmigrant trap,1985.
18
-
.-
-
-
.-
3.1.1.2 Age 1+
A total of 51 age 1+chinook salmon juveniles were captured during the
cold-branding program.All of the captures were recorded in Indian
River,primarily during July and August.Stratton (1986)found chinook
salmon juveniles overwintering in Indian River in the spring of 1985,
but most of these age 1+fi sh had apparently outmi grated from thi s
tributary before the cold-branding program began in July.
Peak catches of age 1+chinook salmon captured at the Talkeetna Station
outmigrant traps were recorded in late May and early July (Fig.7
upper).Fifty percent of the 2,494 age 1+chinook caught at this site
were collected by July 3.The highest catch for this age class was 7.0
fish per hour on July 4.The outmigration of age 1+chinook salmon
from the middle river during the open-water period was essentially
complete by mid-July although a few fish were captured in the traps
through late August.
As was observed at Talkeetna Station,the outmigration of age 1+chinook
salmon past Flathorn Station was already in progress when the traps were
deployed in late May (Fig 7 lower).The highest catch of the season was
7.3 fish per hour recorded on June 27 (the date when 50%of the 3,241
age 1+chinook were caught)and 95%of the total season's catch of this
age class was recorded by late July.
Catches of age 1+chinook salmon captured in the Flathorn Station mobile
trap peaked at 12.8 fish per hour on June 28 and 50%of the 428 age 1+
chinook catch was recorded by July 1 (Fig.8 upper).Similar to the age
0+chinook salmon,the highest catches of age 1+chinook in the mobile
trap were recorded at the two bank transect sites (Fig 8 lower)•
Catches of age 1+chinook salmon in the outmigrant traps indicate that
the migration of this age class in both reaches of the Susitna River had
begun by the time sampling was initiated following break-up.Stratton
(1986)observed that the outmigration of age 1+chinook salmon during
the spring of 1985 had begun prior to break-up in the middle river.The
outmigration from the Susitna River was essentially completed for this
age class by late July.
3.1.2 Size
3.1.2.1 Age 0+
Mean total lengths for chinook salmon fry increased through the season
at individual sites (Table 4).During each sampling period,mean total
lengths were progressively larger for sites further downstream.Chinook
fry with the shortest mean length during each period were collected in
Portage Creek (RM 148.8)while the longest mean lengths were observed
for chinook fry collected at Flathorn Station (RM 22.4).
Chinook fry collected in the stationary outmigrant traps during early
June averaged 40 mm at both Talkeetna and Flathorn stations but by early
19
TALKEETNA STATION CHINOOK 1 +
19605
100 1------11--=:;;;;;;;;;;;;=.....---------------,-7
90
eo
6
2,494 •TOTAL SEASON CATCH
%OF HIGHEST CPUE
-----%OF CUMULATIVE CATCH
to-
Z
W
(J
a::w
Q..
70
60
50
40
.30
20
10
AUG SEP OCT
5 a::-
::>o
::I:
4 a::
w
0..
3 ::I:
U.....
oct
u2
DATE
FLATHORN STATION CHINOOK 1 +
19605
100 .,------"'1\---------:::::;;;;;_-------------,
-
7
5 a::
::>o
::I:
4 a::
w
Q..
3 ::I:
U
.....
oct
2 u
6
OCTSEP
3.241·TOTAL SEASON CATCH
%OF HIGHEST CPUE
-%OF CUMULATIVE CATCH
20
10
40 ~
I
.30
O-ftm,nmmrmrmrrrmrrlTilTTrpmmmmmmmmmTTflTlmmmrmli'Tm:mnrlTTl'Jl'rrrnrmTTT1fi'TnmmTTTTflmmrmt-O
I
50 ~
I
1
70
60
90
60
DATE
Figure 7.Chinook salmon (age 1+)daily catch per unit effort and cumulative
catch recorded at the Talkeetna (upper figure)and Flathorn (lower
figure)stationary outmigrant traps,1985.
20
~I
~,
FLATHORN STATION CHINOOK 1 +
"'OBlLE ~I::PUE 1gee
2
6
a::
:::lo
8 x
a:
1IJ
0-
X
(.)....
<{
4 (.)
10
12
431 =TOTAL SEASON CATCH
%OF HI GHER C PUE
-%OF CUMULATIVE CATCH
o -mTTT1rTT1TITn'hTITI'nlTTTlTTlnTrTT1:TITTTTlrrnTTTlrrnTTT1rTTTlTTrTnn;.lTn1TTr 0
10
-
FLATHORN STATION CHINOOK 1 +,1985
HORIZONTAL DtSTftll!lUT10H
100 '"1'7""7'T----------------------.
80
....
z 10
1IJ
(.)
a::eo
1IJ
Il.
SO
1IJ>....~
:~0(
..J 301IJa::
20
10
a
a 2 J .-5 •7 ••10 11
'T'MNSECT ~INT
......
Figure 8.Chinook salmon (age 1+)daily catch per unit effort and cumulative
catch (upper figure)and the catch as a percent of the highest catch
per unit volume by transect poi nt (lower fi gure)recorded at the
Flathorn Station mobile outmigrant trap.1985.
21
Table 4.Chinook salmon (age 0+)mean total length,range of lengths,and
associated confidence intervals by site and sampling period in theSusitnaRiver,1985.
Porh,.er"k In~ian RI ytf /loutll Ialk"tnl Shtion Fhtllorn Shtl DII FIltllorn Ilobil.Trip
Sliplin,n ",In Rift'.of 95 1 n ""n Rln,.of 95 1 n ",In RIn,'of 95 1 n ",In RIn,'of 95 1 n ""n Rln,.of 95 1
Plfio~length len,tlll C.I.ltn9th ltn,thl C.I.len,th Itn,tlll C.I.len9th Itn,tlll C.1.len9th Itn,tlll C.I.
----_..--------------------------------.-------------------------------_..._....._---------------------------._------------------------------....-------_..._-------.....--_.._-------
ftl'27 to ~unt 15 I ---I ---470 39.6 34-47 0.2 68 40.0 32-46 0.8 3 42.7 42-43 1.4
~un.16-30 I --.I ---1IJ 43.2 3H2 1.0 241 50.4 33-68 0.6 8 48.5 42-56 4.4
My 1-15 101 40.3 36-51 0.8 57 43.9 38-64 1.7 645 50.1 3J-71 U 960 58.7 34-75 0.5 77 59.5 40-73 2.2
N My 16-31 150 43.0 34-52 0.5 54 48.0 3H2 1.3 943 5J.3 35-80 U 1427 63.8 38-82 0.4 172 67.6 43-79 1.0
N
~,uat 1-15 51 47.4 41-64 1.1 50 51.2 41-63 1.3 855 55.9 3N8 0.7 982 71.5 41-89 0.5 160 75.0 56-89 1.0
,
Au,ult 16-31 150 49.7 40-61 0.7 50 56.1 44-67 1.4 m 57.3 39-85 0.7 568 71.7 42-95 0.7 53 '74.5 47-89 2.1
StptHhtr 1-15 100 50.9 40-68 1.1 101 6l.6 47-78 1.0 158 60.7 45-84 1.2 23 75,6 48-88 6.3
St,ttlber 16 to Octolltr 12 50 52.4 3NI 1.4 50 65.7 53-78 1.8 237 63.7 43-92 1.1 10 76.3 65-85 7.5
I Not IlIpl rd
C.I ••951 confi~tnct inttrvlh plul Dr lilUI til.IIIn lentth
J ~]I j J ),
;'1
,1 »J ~~J ,J ~
,..,.
-
,~
July during the peak period of outmigratian for both sites,lower river
chinook fry averaged 9 mm longer than fry collected in the middle river.
Thi s trend of longer 1engths conti nued and by the end of the sampl i ng
season,lower river chinook fry averaged 76 mm which was 12 mm longer
than fry collected in the middle river at Talkeetna Station.
The differences in mean length between sites and between reaches may be
due to several factors including differences in water temperatures,
emergence timi ng,habitat conditi ons,and geneti cs.Roth and Stratton
(1985)observed that chinook fry collected in the Deshka River (RM 40.6)
in 1984 averaged 10 to 15 mm longer than fry collected in Indian River
during the same periods.The incubation and rearing conditions in these
two tributaries differ in that Indian River is a fast-flowing river with
cool water temperatures and 1imited reari ng areas,whil e the Deshka
River is slower flowing with seasonably warmer water temperatures and
abundant rea r"j ng habitat.Size differences observed between sites in
Table 3 is most probably explained by a combination of factors acting on
a number of mixed stocks which had hatched and reared under varying
habitat conditions.
3.1.2.2 Age 1+
The mean total length of age 1+chinook salmon,similar to age 0+fish,
was larger in the lower river than in the middle river during the
open-water period.Age 1+chinook salmon averaged approximately 81 mm
during their outmigration past Talkeetna Station while age 1+chinook
collected at Flathorn Station averaged 87 mm during this same period.
3.1.3 Mark-and-recapture
A total of 3,771 juvenile chinook salmon were cold branded and released
in Portage Creek from July 9 through September 25,1985.The difference
between the number caught and the number branded is a result of
mortality occurring during the collection and branding procedures.
Chi nook fry mortality duri ng thi s cold brandi ng operati on in Portage
Creek was 3.4%.
A total of 30,567 chinook salmon fry were cold branded and released in
Indian River from July 3 through October 10,1985.Chinook salmon fry
mortality from cold branding was 4.4%in Indian River.
Cold branding conducted at Sidechannel lOA and Slough 15 contributed an
additional 653 and 1,448 branded chinook salmon fry,respectively,to
the marked fish pool for the middle river mark-recapture program.
3.1.3.1 Spatial and temporal distribution
A portion of the chinook salmon fry which were branded and released in
the middle river in 1985 remained at the capture sites for a period of
time before migrating suggesting that many of the chinook fry collected
at the branding sites in the middle river were actively rearing at these
sites.
23
Ninety-two fry branded in Portage Creek were recaptured in this
tributary from 1 to 34 days (mean;10 days)after their release.Of the
chinook fry branded and released at the mouth of Indian River,132 were
later recaptured at the release site.Residence time for these
recaptures was from 1 to 76 days (mean;9 days)after release.At the
three upstream sites in Indian River,341 chinook fry which were branded
at these sites were recaptured at the release sites from 1 to 61 days
(mean;18 days)after release.
In addition to the chinook salmon which were branded and recovered in
1985,38 age 1+chinook salmon which were recaptured at Ta"lkeetna
Station in 1985 (1.5%of the age 1+chinook salmon captured at this
site)had been branded during the 1984 summer program or the 1984-85
wi nter program.The majority (60%)of these fi sh were branded and
released during the 1984 summer cold-branding program in Indian River
(Table 5).
Juvenile chinook salmon with cold brands were recaptured at numerous
sites in the middle reach of the Susitna River during 1985.However,no
branded chinook salmon were captured at Flathorn Station.Also,no
recaptures of branded chi nook fry were made at sampl i ng sites located
upstream from the sites where they were released.
Of the chinook salmon fry branded and released in Portage Creek,five
were recaptured at the mouth of Indian River.In addition,six chinook
fry branded in Portage Creek were recaptured at the selected slough
sites and two were recovered at Talkeetna Station.
Fifty-five of the chinook fry branded at the three upper Indian River
sites were recaptured at the mouth of Indian River from 1 to 55 days
(mean;18 days)after their release at the upstream sites.In addition,
23 chinook salmon fry branded at the three upper sites in Indian River
were subsequently recaptured in this tributary at sites downstream from
the areas of release.These recaptures were made from 4 to 38 days
(mean;25 days)after release.
Chinook salmon fry branded at the four Indian River sites were also
recaptured during sampling of other middle river sites.Trapping at the
14 selected sites in the middle river captured 97 branded chinook salmon
fry which had been previously released in Indian River.These
recaptures were recorded from 1 to 73 days (mean;23 days)after
release.Seventy percent of the recaptures were made at sloughs 15 and
16,the two nearest sites downstream from Indian River.In addition,
the Talkeetna Station traps recovered 53 branded chinook salmon fry
which had been released at the mouth of Indian River from 1 to 61 days
(mean;29 days)earl i er and ni ne recaptures of chi nook fry whi ch had
been released in the three upper Indian River sites from 1 to 37 days
(mean;17 days)earlier.
The information collected in 1985 suggests that the distribution of
chinook fry,after emergence,is subject to flow conditions and to the
amount of rearing habitat available.The natal tributaries provide the
24
~,
-
--
)- 1 )1 J J 1 j 1 )]-1 J
Table 5.Release and recapture data for the chinook and coho salmon juveniles cold-branded in the middle river between August
10,1984 and April 15,1985 which were recaptured at the Talkeetna Station outmigrant traps in 1985.
Talkeetna Trap 1985 Talkeetna Trap 1985
Recapture Data Branding Release Data Recapture Data Branding Release Data
#Date Speci es Length Date Location #Date Species Length Date Location
1 5/28 Chinook 65 8-29-84 Slough 19 21 6/10 Chinook 95 4-16-85 Slough 9A
2 5/31 Chinook 81 11/15/84 Slough 22 22 6/13 Chinook 62 1-8-85 Slough 22
3 5/31 Chinook 86 9-25-84 Indian R.23 6/13 Chinook 62 2-20-85 Slough 22
4 5/31 Chinook 77 9/24/84 Indian R.24 6/13 Chinook 67 2-20-85 Slough 22
5 5/31 Chinook 77 9-13-84 Slough 22 25 6/13 Chinook 72 9-11-84 Indian R.
6 6/1 Chinook 74 12/15/84 Slough 9A 26 6/20 Chi nook 86 9-11-84 Indilln R.
7 6/1 Chinook 73 9-11-84 Indian R.27 7/3 Chinook 75 8-27-84 Indian R.
8 6/1 Chinook 70 9/11/84 Indian R.28 7/3 Chinook 70 9-11-84 Indian R.
N 9 6/1 Chinook 65 10/11/84 Slough 20 29 7/3 Chinook 70 8-27-84 Indian R.
(J1
10 6/1 Chinook 80 12-18-84 Indian R.30 7/4 Chinook 85 8-11-84 Indian R.
11 6/2 Chinook 78 10/9/84 Indian R.31 7/4 Chinook 90 8-11-84 Indilln R.
12 6/2 Chinook 91 10-9-84 Indii'ln R.32 7/4 Chinook 93 8-10-84 Indian R.
13 6/2 Chinook 73 10/10/84 Indilln R.33 7/5 Chinook 83 1-24-85 Slough 22
14 6/4 Chinook 84 12-16-84 Slough 22 34 7/5 Chinook 82 3-14-85 Indian R.
15 6/6 Chinook 80 9/13/84 Slough 22 35 7/6 Chinook 82 1.,24-85 Slough 22
16 617 Chinook 66 9/13/84 Slough 22 36 717 Chinook 74 12-16-84 Slough 22
17 6/7 Chinook 88 10/10-84 Indian R.37 7/9 Coho 73 10-26-84 Indian R.
18 6/8 Chinook 76 9/11/84 Indian R.38 7/13 Coho 77 3-14-85 India ••R.
19 6/8 Chinook 79 8-10-84 I nd i lin R.39 7/14 Chinook 80 4-15-85 Slough 22
20 6/8 Chinook 82 9/11/84 Indian R..40 7/15 Chinook 79 9-11-84 Indian R.
necessary habitat for some of the chinook fry but the remainder are
forced to outmigrate during the summer.Their redistribution appears to
include a bank oriented downstream migration which allows the fry to
locate additional rearing areas.Many of these fry in the middle river
find suitable habitats in the sloughs and sidechannels of this reach
while the remainder continue into the lower river.
The recovery of branded chinook salmon juveniles at the various sampling
sites in the middle river coupled with the outmigrant trap data at
Talkeetna and Flathorn stations suggest the presence of the three life
history groups discussed in Roth and Stratton (1985).The collection of
branded chinook in Portage Creek and Indian River during the open-water
period and the recapture of branded chinook in Indian River through the
previous winter (Stratton 1986)suggest that a portion of the juvenile
chinook salmon in the middle river remain in their natal sites until
their outmigration to the ocean as age 1+fish.A second group of
chinook salmon juveniles is comprised of fish which spend a portion of
their first summer in their natal tributaries and then redistribute
downstream.Some of these fish find suitable rearing and overwintering
habitat in sloughs and sidechannels in the middle river while the
remainder continue downstream to sites in the lower river.These fish
then enter the ocean the following year as age 1+fish.The third group
of juvenile chinook salmon,as suggested by the catches at Flathorn
Station,are made up of fish which rear for a time in the Susitna River
but then enter the ocean duri ng thei r fi rst summer as age 0+fi sh.
Scales collected from adults at Flathorn Station indicates that
juveniles which migrate to the ocean as age 0+fish probably represent a
small percentage of the total population,have very low survival rates,
or a combination of these factors.Thompson et al.(1986)reported that
of the 1,976 adult chinook salmon scale samples analyzed from Flathorn
Station in 1985,only 5%indicated the fish had outmigrated to the
ocean as age 0+fish.
3.2 Coho Salmon
3.2.1 Catch per unit effort
3.2.1.1 Age 0+
Only 201 age 0+coho salmon were collected in Portage Creek in 1985,
with catches never exceeding two fry per trap day (Table 6).Suchanek
et al.(1984)found that coho salmon fry prefer habitat areas having
relatively deep water,slow velocities,and cover consisting of debris,
vegetation,and undercut banks.Portage Creek has very few areas with
these types of habitat so that one could conclude that few coho fry
remain in this tributary to rear through the season.
Indian River supported the largest percentage (32.4%)of spawning coho
salmon in the middle river in 1984 (Barrett et al.1985)and has a
greater number of areas having habitat preferred by rearing coho salmon.
This resulted in relatively higher catches of coho fry in Indian River
than in Portage Creek.A total of 3,098 age 0+coho salmon were
collected from all four sites in Indian River during the cold-branding
program.
26
~l
....'
Table 6.Coho salmon (age 0+)catch per trap by sampling date for Portage Creek,1985.
While the daily trapping effort at the mouth of Indian River (site 1)
accounted for 81%of the total effort in this tributary,only 40%of the
total catch was recorded at this site.Coho fry catches at the mouth,
like those for chinook fry,were highest during July with the peak mean
catch of 2.6 coho fry per trap day recorded on July 18 (Fig.9 upper).
Coho salmon fry were more abundant in the three upstream sites in
Indian River as shown by the much higher catches through the season at
the upstream sites than at the mouth (Fig.9 lower).Sites 2,3,and 4
accounted for only 19%of the effort in Indian River,but 60%of the
catches were recorded at these sites (Table 7).
Table 7.Coho salmon (age 0+)catch per trap by site and sampling date for the three
upstream sites in Indian River,1985.
SITE 2 SITE 3 SITE 4
Sampling Number Number Catch Number Number Catch Number Number Catch
Date Caught of Traps Per Trap Caught of Traps Per Trap Caught of Traps Per Trap
06-Jul
10-Jul
14-Jul
18-Jul
24-Jul
28-Jul
01-Aug
OS-Aug
09-Aug
17-Aug
21-Aug
25-Aug
29-Aug
03-Sep
07-Sep
11-Sep
17-Sep
25-Sep
01-0ct
15
12
22
11
13
17
35
40
29
47
32
45
55
50
55
16
37
66
42
10
9
10
10
10
10
10
10
10
10
9
10
10
10
10
10
10
10
10
1,5
1,3
2.2
1,1
1.3
1,7
3.5
4.0
2.9
4.7
3.6
4.5
5.5
5.0
5.5
1,6
3.7
6.6
4.2
o
3
10
13
24
11
27
20
25
17
24
42
22
18
2
19
23
19
16
27
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
0.0
0.3
1,0
1,3
2.4
1,1
2.7
2.0
2.5
1,7
2.4
4.2
2.2
1,8
0.2
1,9
2.3
1,9
1,6
3
66
66
67
50
34
31
53
98
48
85
83
39
31
42
27
32
18
4
10
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
0.3
7.3
6.6
6.7
5.0
3.4
3.1
5.3
9.8
4.8
8.5
8.3
3.9
3.1
4.2
2.7
3.2
1,8
0.4
~I
-
0.
00(
a:....
I.5 a:w
0.
:z::u....
1.0 ~
:z:
00(w
:lE
0.5
2.0
SEP OCT
1,247 •TOTAL SEASON CATCH
%OF HIGHEST CPUE
- %OF CUWULATIVE CATCH
INDIAN RIVER MOUTH.1985
COHO SAI...t.ION .JWENILES CPUE
-tfr1nrnrrrrrTTT111TTTmTTTfTT11TTTrTTTTTTmmTTrTTTTTTTTlllTTTrTTTTTTTTlmTTlTTTTTTT11:TTJT'mnnt-0.0
100
gO
eo
10
eo....
~
U 50a::~~40
30
20
IJ
0
DATE
INDIAN RIVER COHO SALMON FRY
B'r'SITE !IY 1WO WEEK PEJI'lOD.1aae
~I
---SITE I (MOUTH)
---SITES 2,3,4 (COMBINED)
5
<4.5
<4~3.5
~3
~2.5
i 2
~1.5
0.5
0
E JUL L JUL E AUQ L AUQ E S£P
SAWPUNO PERIOD
LSEP E OCT
Figure 9.Coho salmon juveni les dai ly catch per unit effort and cumulative
catch recorded at the mouth of Indian River (upper figure)and the
catch per trap by site by two week period at the four sampling sites
in Indian River (lower figure),1985.
28
,~
-
,-
The catch data for coho salmon fry trapped in the 14 selected sites
between Portage Creek and Ta"l keetna Stat i on are presented in Tab 1e 8.
Coho fry catches increased at eight of the 14 sites through the season
indicating the movement of fry from their natal areas into these sites
to rear.The highest catch per unit effort recorded at the selected
sites was 13.8 fish per trap day in sloughs 14 and 15 on September 11
and September 19,respectively.Sloughs 14 and 15 provide the water
depths and cover types preferred by rearing coho salmon and are located
on the same side of the Susitna River as Indian River.These two sites
are located at 1.4 and 2.6 miles downstream from Indian River and are
among the first suitable rearing sites encountered by fish which have
migrated out of this tributary.
A total season catch of 1,579 coho salmon fry was recorded at the
Talkeetna stationary outmigrant traps with 50%of the catch recorded by
August 15.Daily catches fluctuated dramatically for coho fry through
the season but never exceeded 0.9 fry per hour (Fig.10 upper).As
shown by the slope of the cumulative catch,the outmigration of coho
salmon fry past Talkeetna Station was relatively consistant indicating
the continual downstream redistribution of coho fry in the middle river
puring the open-water period.
Observations of coho salmon fry in the middle river indicates that fry
are widely distributed within the reach but are not very abundant.The
middle river supports a relatively small population of spawning adult
coho (1200 estimated in 1984 by Barrett et al.1985)in comparison to
the lower river,and the fry actively search out suitable rearing areas
during the open-water period.
A cumulative catch of 1,756 coho salmon fry was recorded for the
stationary traps at Flathorn Station.High catches were recorded
during early July and mid-August with the peak mean catch of 6.1 fry
per hour recorded on August 15 (Fi g 10 lower).The slope of the
cumulative catch at Flathorn Station was less consistant than that
recorded at Talkeetna Station.Although 50%of the season catch was
recorded on August 15 at both sites,72%of the catch at Flathorn
Station was recorded during the July and August outmigration peaks
which accounted for only 20%of the season's effort.This indicates
that the age 0+coho salmon passing Flathorn Station are subject to
outmigration pulses that may be driven by changes in discharge or other
factors that influence this outllligration.Discharge was found to have
influenced the outmigration of coho fry in the middle river during 1983
(Roth et al.1984).
The highest catches of the 71 coho salmon fry collected in the mobile
trap at Fl athorn Stati on were recorded at the two bank transect sites
(Fig.11 lower).The higher catches of age 0+coho salmon along the
bank sites relative to the offshore transects suggests a tendency for
near-shore migration for coho fry as they continue to search out
suitable rearing habitats.Fifty percent of the captures of coho fry in
29
---~-----------------------_.------------------
Table 8.Coho salmon (age 0+)catch per trap and the number of branded fish
recaptured by site and date for the 14 selected sites in the middle
reach of the Susitna River,1985.
,WiiPI,
~
5i~ling Tohl Citch I of Fisb Percent
Stte Dlh Cltch Per Trip R,clpturtd ReCipturf
:•••••••z.=z.:=••=~•••••••c ••a=••&.....................••••••••••••••,~.
Slou1b oA B/o 35 3.5 0 0.0
lRK 12.3)8/17 45 4.5 0 0.0
9/3 24 2.4 0 0.0
9122 19 1.9 I 5.3
--------------------------------------------------------------------SIou1h SA 8/24 19 1.9 0 0.0
IRK 25.3)9/0 40 4.0 2 5.0
9/26 110 11.0 3 2.7
--------------------------------------------------------------------SI0U1h 9A 8123 1 0.1 0 0.0
(RK 33.0)9/11 0 0.0 0 0.0
9126 0 0.0 0 0.0
--------------------------------------------------------------------.-,
SI0U!h 10 817 0 0.0 0 0.0
(~33.8)8/25 4 0.4 0 0.0
9/6 28 2.8 3 10.7
9/27 33 3.3 5 15.2
--------------------------------------------------------------------Sidtchinnel lOA 8/24 0 0.0 0 0.0
(RK 133.9)9/0 0 0.0 0 0.0
10/4 9 0.4 J 11.1
--------------------------------------------------------------------~4
Slouih 14 9/23 96 9.b 1 1.0
(Rtf 35.9)9/11 138 13.9 1 0.7
9127 45 4.5 2 4.4
--------------------------------------------------------------------SlDU1h 15 8120 49 4.9 0 0.0 ""'"lRK 37.2)912 72 7.2 2 2.8
9/19 138 13.8 3 2.2
9/29 209 8.4 4 1.9
--------------------------------------------------------------------~
Slou1h Jo 7129 0 0.0 0 0.0
(Rtf n.n B/12 11 1.1 0 0.0
8/29 9 0.9 0 0.0
9/14 20 2.0 0 0.0 ~-\10/1 5J 5.1 3 5.9
---------------------------------------------------------------------Sloll1b 17 8/IB 34 3.4 0 0.0
IRK 38.9)9/2 37 3.7 0 0.0
9/19 96 9.6 0 0.0 ~-
---------------------------------------------------------------------Slou1h 19 B/12 0 0.0 0 0.0
IRK 39.7)9/2 1 0.1 1 100.0
9/19 16 1.6 0 0.0
---------------------------------------------------------------------Slou1h 20 7/31 0 0.0 0 0.0
(R"40.l)9/5 3 0.3 0 0.0
9/21 0 0.0 0 0.0
---------------------------------------------------------------------Slou1h 21 7129 0 0.0 0 0.0
(R"42.0)9/18 5 0.5 0 0.0
9/5 25 2.5 0 0.0
9121 9 0.9 0 0.0
---------------------------------------------------------------------Anna Creek Slouqh 7129 0 0.0 0 0.0
lR~143.2)8/18 6 0.0 0 0.0
9/'5 37 3.7 0 0.0
9121 40 4.0 0 0.0
---------------------------------------------------------------------
SIou1h 22 7/29 0 0.0 0 0.0
(RK 44.3)8112 1 0.1 0 0.0
8/29 3 0.3 0 0.0 ~,
9114 3 0.3 0 0.0
10/9 3 0.3 0 0.0
---------------------------------------------------------------------
30'
TALKEETNA STATION COHO 0+
1985
1 00 ...,..-------------------.-----------~.._
-
I-
Zwua::wa..
90
eo
70
60
50
40
.:50
20
10
1,579·TOTAL SEASON CATCH
%OF HIGHEST CPUE
-%OF CUMULATIVE CATCH
0.8
0.6 ~
o
:I:
a::
l.L.I
a..
0.4
:I:
U
l-
e:(
U
0.2
o -tn'fTrtmrmifmmTTTTTmml1TJTmm1TlT\1mmmrnmmTflTTlmmmmrrrmmmrTTlTTmTnTTTTTmmTTTTTmmTJT1Tmmrr-0 .0
MAY•JUNE JULY
DATE
AUG SEP OCT
FLATHORN STATION COHO 0+
1985
100 ..-----------------,..-----------:_----,
6
!z
LtJ
U
ct:
Wa..
90
80
70
eo
50
40
.:50
20
10
MAY
I
1,756·TOTAL SEASON CATCH
%OF HIGHEST CPUE
-%OF CUMULATIVE CATCH
JUNE
DATE
OCT
5
:I:
U
I-2 e:(
u
Figure 10.Coho salmon (age 0+)daily catch per unit effort and cumulative
catch recorded at the Talkeetna (top graph)and Fl athorn (bottom
graph)stationary outmigrant traps.1985.
31
""",,,
~I
-,
~
a:
;:)
0
x
a:
LIJ
a-
x
0 ~....«
0
I .~
FLATHORN STATION COHO 0+
1oI081L£Tft,VI CPUE 1 gM
I:r-------------'----7-'-=-T-O-TA-L-S-E-A-S-O-N-CA-T-C-H---~--2.0
wu -%OF HIGHER CPUE
- %OF CUMULATIVEeo~CATCH
[
70 1
Ieo
1985
•to t 1•2o
10
FLATHORN STATION COHO 0+.
HOIttZOHTAL DtSTWIIllmOH
tOO ,------------=--~-...:.-:.:....:.-----_
20
30
LU
>
....«
..J
LIJ
a:
Figure 11.Coho salmon (age 0+)daily catch per unit effort and cumulative
catch (upper figure)and .the catch as a percent of the highest catch
per unit volume by transect poi nt (lower fi gure)recorded at the
Flathorn Station mobile outmigrant trap,1985.
32
....,
,-
,~
.-
the mobile trap were recorded by July 28.Similar to the pattern
observed past the stationary traps at this site,the peak catches were
recorded in early July and again in mid-August (Fig.11 upper).
3.2.1.2 Age 1+and 2+
No age 1+coho salmon were captured during surveys of Portage Creek and
no age 2+coho were collected during the marking programs in 1985.Age
1+coho salmon were collected sporadically during the tagging program
in May and June with the highest concentrations observed in Slough 11
and Indian River.One hundred eight age J+coho salmon were captured
in Indian River between July 3 and October 7,indicating that a portion
of the coho remain in this tributary to rear and overwinter.Stratton
(1986)also collected small numbers of overwintering coho salmon
juveniles in 1985.
Six hundred twenty-five age 1+and 2+coho salmon were caught at the
Talkeetna Station traps.The peak catch of 0.4 fish per hour was
recorded on May 31 and 50%of the season catch was recorded by July 16
(Fig.12 upper).As was observed for the age 0+coho collected at this
station,the slope of the cumulative outmigration of age 1+and 2+coho
salmon juveniles did not fluctuate appreciably through the sampling
season indi cati ng an ongoi ng downstream redi stri bution of these age
classes.Age 2+coho salmon made up 14%of the total season catch of
age 1+and 2+coho salmon at Talkeetna Station.Most of the
outmigration of this age class was recorded during June.Age 1+coho
made up the remaining 86%of the catches at this site and the
outmigration of this age class continued through the open-water period.
A total of 607 age 1+and 2+coho salmon were captured in the stationary
traps at Flathorn Station.Peak catches and 50%of the total season
catch were recorded during the last week of June (Fig.12 lower).
Scale samples indicated that this peak was comprised primarily of age
2+coho salmon.A second smaller peak comprised of age 1+coho was
observed in mid-August.
The mobile trap at Flathorn Station collected 312 age 1+and 2+coho
salmon with the peak catch rate of 1.3 fish per hour recorded on June
26,by which time 50%of the season's catch in this trap was recorded
(Fig.13 upper).Age 2+coho salmon made up 75%of this total catch in
the mobile trap during 1985.The highest catches of age 1+and 2+coho
salmon were recorded at the west bank transect site (Fig.13 lower).
In summary,the outmigrant trap data shows that during the open-water
period,age 2+coho salmon migrate to the ocean primarily during ~1ay
and June while the remaining juvenile coho undergo a downstream
redistribution through the season.Much of the migration of age 0+and
1+coho is probably due to the limited areas in the middle river that
provide habitat which is suitable for coho rearing so that coho may be
continually seeking areas with adequate food supplies.
33
I !I
TALKEETNA STATION COHO 1 +&2+
1SS5
~,
0.1
a:
::l
o
::I:
a:
I.IJ
0.2 0..
0.3
10
30
20
o ~rqmmmrmnTl1111rmnTTlT]immmmnmrmmmmlTJTTTmmrnmTTTl'tmmmri'linrl1TrrimTTlrmnmmrriTrrmmm+-0 .0
70
40
50
60
eo
615 •TOTAL SEASON CATCH
90 'f.OF HIGHEST CPUE
___%OF CUMULATIVE CATCH
100 0.4
DATE
FLATHORN STATION COHO 1+&2+
19S5
100 ....--------r-------------------:::=------r-
~,
1.2
0.2
1.0
a:
::l
0.8 ~
a:
I.IJ
0.6 0..
::I:
U
t-<0.4 u
OCT
607.TOTAL SEASON CATCH
%OF HIGHEST CPUE
-%OF CUMULATIVE CATCH
JUNE
10
30
20
40
60
90
70
eo
a 1fn1ffrrmmrmnmmrmnmlJ1rmnmmnmrmmmmrqMtinnlTTTTTmmrrriri~rnml'rrrfmmTTTTTrrrm1TJTTmmm-0.0
DATE
Figure 12.Coho salmon (age 1+and 2+)daily catch per unit effort and
cumulative catch recorded at the Talkeetna (upper figure)and
Flathorn (lower figure)stationary outmigrant traps,1985.
34
FLATHORN STATION COHO 1 +&2+
YOBlLE ~CPUE 11118
2
4 ::t:
U
~«
u
B
ex:
::>
6 0
::t:
ex:
LIJ
a..
311 =TOTAL SEASON CATCH
- %OF HIGHER CPUE
- %OF CUMULATIVE CATCH
10
-
FLATHORN STATION COHO 1+&2+.1985
HOI'IZONTAL OtSTltlIlUTlON
•10 11•32o
10
20
100 ..,.,.."7"'T----------------------...
...z 70
w
U
II::80
LIJa..
\oJ
>...
4(
-'
\oJ
II::
Figure 13.Coho salmon (age 1+and 2+)daily catch per unit effort and
cumulative catch (upper figure)and the ca:tcn as a percent of the
hi ghest catch per unit volume by transect poi nt (lower fi gure)
recorded at the Flathorn Station mobile outmigrant trap,1985.
35
3.2.2 Size
3.2.2.1 Age 0+
As was observed for chinook salmon fry in the Susitna River,the mean
length of coho fry progressively increased downstream for each sampling
period (Table 9).By late September,coho fry in the lower reach of the
Susitna River averaged 10 mm longer than the fry collected in Indian
River.This difference may be due to the genetically mixed stocks
present in the catches in the lower river and the variable growth rates
of these stocks.
3.2.2.2 Age 1+and 2+
Age 1+coho were also generally longer at Flathorn Station than at
Talkeetna Station during the season (Table 10).Age 2+coho salmon
collected at all sites combined in the Susitna River during 1985
averaged 132 mm (range;109 to 174 mm).
3.2.3 Mark-and-recapture
In 1985,the cold-branding program accounted for 179 branded coho salmon
juveniles released in Portage Creek,and a total of 2,986 coho salmon
released in Indian River.Juvenile coho salmon mortality resulting
from the branding program was 4.1%.Cold-branding studies conducted at
Slough 15 and Sidechannel lOA contributed an additional 12 and 619
marked coho salmon,respectively,to the population of coho salmon
branded and released in the middle river.
3.2.3.1 Spatial and temporal distribution
A portion of the juvenile coho salmon branded in the middle river
apparently reared for a time at the collection sites.Eight of the 179
(4.5%)coho salmon juveniles branded in Portage Creek were recaptured
at the marking sites from 1 to 20 days (mean;9 days)after release.Of
the 1,794 coho salmon branded in the three upper Indian River sites,169
(9.4%)were later recaptured at the release sites.These recaptures
were recorded from 4 to 61 days (mean;17 days)after release.No coho
sa 1mon juveni 1es whi ch had been branded at the mouth of Indi an Ri ver
were recovered at this site during subsequent sampling.
In addition to the coho salmon which were branded and recaptured in
1985,two age 1+coho salmon which had been branded as fry during the
1984-85 winter program were recaptured at Tal keetna Station in 1985
(Table 5).
As was observed for chinook salmon,no branded coho salmon were
captured at Flathorn Station or at sampling sites located upstream from
their release sites.
Five of the juvenile coho salmon branded in Portage Creek were
recaptured during surveys of the 14 selected sites in the middle river.
36
-
_J )1 j 1 )1 J f 1
Table 9.Coho salmon (age 0+)mean total
associated confidence intervals by
Susitna River,1985.
length,range of lengths,and
site and sampling period in the
Indllll Rhlt'Ilout~hlh.tu station Fhthorn Station Fllthorn "abll.Trip
S..pliRg •IItIll Ring.of 95 1 a "un Rang.of 95 1 a IItln Ring.of 95 %a "un Ring.01 95 %
Plt'iod ltngth Itngthi C.I.l.ngth Itnlth e.l.ltnlth hnlthl e.l.l.ngth I tnlthl C.I.
-------------........_-----..--------_........---..._.------------......_------_...---_.........-----------------------------_.._-.-_..-----------------------------------....-.....
""y 27 to ~un.15 a - --40 36.1 33 ....0 0.5 13 36.4 33-40 1.3 2 40.5 39-42 19.0
~un.16-30 •-..62 36.8 31-46 0.9 49 39.8 31-54 1.6 2 37.5 ~-39 19.0
w My 1-15 51 34.7 30-47 0.7 274 37.9 30-54 0.6 31\41.2 30-68 1.0 26 39.0 28-69 4.4-.,J
My 16-31 49 37.6 33-47 0.8 179 42.5 32-60 1.0 101 47.4 30-76 2.4 1\52.3 34-79 10.5
llu,ult 1-15 50 43.6 36-58 1.3 235 47.0 28-64 0.8 383 57.8 32-79 0.9 23 61.2 35-i4 5.6
llugult 16-31 50 46.8 36-60 1.2 233 52.4 35-76 1.1 537 56.6 41-79 0.7 16 62.3 43-82 6.7
S.pltlb.r 1-15 50 51.4 36-62 1.5 175 57.5 42-85 1.5 60 62.8 50-77 1.8
S.ptHb.r 16 to Dctobtr 12 38 53.2 38-72 2.5 301 60.9 35-87 1.0 94 63.6 37-82 1.9
I IIot nap lid
e.l ••95%cOIIfid.nu lnunl",III or .hul tht ..1ft Itn,th
Table 10.Coho salmon (age 1+)mean total length t range of lengths t and
associated confidence intervals by site and sampling period in the
Susitna River t 1985.
----------------------------------------_._----
B.llpling
Plf'iod
n
r.ltntna Stali on
",u Ring.of 9~Z
L.ngth llngtis C.I.
Fllthon Station
n "tin Ru,.of 95 Z
L.ngth Ilngthl C.I.
FllthDrn "obil.Trap
"tin Rin9'of '15 1
Llngth Itn9th C.I.
Illy 27 tD Jun.15 74 76.1 51-108 3.4 55 90.6 60-113 4.3
JlIIIt 16-30 50 78.7 54-114 5.5 140 97.0 "-116 1.9
My 1-15 109 78.2 ~-1I0 2.0 "91.4 "-lIB 3.9
My 16-31 6S 79.2 61-120 3.0 28 8906 80-113 3.0
Au,ult I-IS lIB 80.7 64-124 2.6 65 '1.7 80-132 3.1
Au,ult 16-31 54 8U 71-120 3.4 35 93.9 82-119 3.2
Sf,tttbrr 1-15 21 102.2 81H2B 5.0 8 107.5 BS-132 13.6
Stpt"i1rr 16 to Octoil.r 12 101 116.8 89-150 3.5 18 97.7 83-145 9.0
a Not lilpl ttl
C.I.•'51 CDnfUHCt intlf'ull pili 01'thll th.IIln IIft,th
38
34
18
,
89.0 65-112 16.5
102.4 86-107 2.6
102.1 14-11B 7:7
105.6 84-125 12.8
100,I 86-12'12.0
94.5 '2-97 31.8
-
-
-
-
No other coho salmon branded in Portage Creek were recaptured.Of the
juvenile coho salmon branded at the mouth of Indian River,three were
recovered at Talkeetna Station from 1 to 9 days (mean;5 days)after
release.Four of the coho salmon branded in the three upper Indian
River sites were recaptured at the mouth (site 1)from 9 to 20 days
(mean;14 days)after release,and three were recaptured at Talkeetna
Station from 16 to 56 days (mean;35 days)after release.
Trappi ng at the 14 selected sites in the mi ddl e reach recovered 24
branded coho salmon which had been released at the sites in Indian
River.Also,one of the coho salmon branded in Slough 15 was recaptured
at Talkeetna Station three days later.
The recapture of branded coho salmon juveniles at the 14 selected sites
confirms that many of the coho salmon in the middle river are
continually redistributing downstream during the open-water period.
The collection of branded coho at Taol keetna Station shows that the
redistribution of middle river coho is not limited to this reach,as
some of these fish enter the lower river to suitable rearing and
overwintering habitats.
3.3 Sockeye Salmon
3.3.1 Catch per unit effort
3.3.1.1 Age 0+
The Talkeetna Station outmigrant traps accounted for a cumulative catch
of 5,068 age 0+sockeye salmon in 1985.Peak catches were observed with
the initial deployment of the traps in late May with the highest catch
rate of 12.8 fry per hour recorded on May 28 (Fi g.14 upper).These
high catches were probably a result of the high flows occuring during
break-up in the middle river in 1985.The highest season discharge in
this reach was 39,700 cfs recorded on May 28 (Appendix Figure A.l).At
this discharge level,all of the sloughs which support sockeye salmon
spawning in the middle river,except Slough 11,were overtopped with
mainstem water which flushed post-emergent sockeye fry from their natal
sites.As shown by the high catches at Talkeetna Station,many of these
fry were fl ushed out of the Illi ddl e ri ver.Fifty percent of the tota 1
catch of sockeye fry at Ta"lkeetna Station was obtained by July 1.
Catches decreased after 1ate July although sockeye fry were captured
through the remainder of the sampling season.
At Flathorn Station,a total of 5,053 sockeye salmon fry were captured
in the two stationary traps.As observed at Talkeetna Station,the
outmigration of sockeye fry was already in progress when the traps were
deployed in late May.Peak catches were recorded during July,50%of
the total catch for both traps was recorded by July 15,and the highest
daily catch (4.8 fish per hour)occurred on July 18 (Fig.14 lower).
The outmigration timing recorded for the mobile trap was similar to the
patterns observed for the stationary traps at this site.Fifty percent
39
TALKEETNA STATION SOCKEYE 0+
1965
100 "11----------------::=::;;;;;;;;;;;;;;;;;:==---------,
~wua::w
Q..
90
60
70
60
50
40
30
20
10
5,068 z TOTAL SEASON CATCH
%OF HIGHEST CPUE
- %OF CUMULATIVE CATCH
OCT
12
-10
a::
8 ~o
:I:
a::
6 ~
:I:
(,)
I-4 «
(,)
2
~,
DATE
FLATHORN STATION SOCKEYE 0+
1965
1 00 T--------~r_-----____:::::.::::;;;;.;;;;;,;;;;;;;;;iiii----_____,
-
a::
lJJ
Q..
4
a::
~
3 0:I:
2 :I:
(,)
I-«
(,)
OCTAUG
5,053 z TOTAL SEASON CATCH
%OF HIGHEST CPUE
_ %OF CUMULATIVE CATCH
JULYJUNE
10
0--tfn1'f'l'TTmmmmmmmmlTflTTlrmmrmmmmrmrrTTIJTTmmmmmmmmTlTl"flTl'iTnrmmrmrrmmrmrrmm'l'lTl1-0
20
60
60
....0
90
50
:so
70
DATE
Figure 14.Sockeye salmon (age 0+)daily catch per unit effort and cumulative
catch recorded at the Talkeetna (top graph)and Fl athorn (bottom
graph)stationary outmigrant traps,1985.
40
-.
.....,
(~
of the total catch in the mobile trap was recorded by July 18 and the
highest daily catch of 11.4 fry per hour occurred the following day
(Fig.15 upper).
The Fl athorn mobil e trap captured 828 age 0+sockeye salmon duri ng
1985,with the hi ghest catches recorded at the bank transect sites
(Fig.15 lower)suggesting a tendency for near-shore migration for age
0+sockeye.This is similar to __the horizontal distribution recorded
for sockeye fry in 1984 (Roth and Stratton 1985)and could be a
response to the horizontal velocity gradient of the river at this site.
Generally,velocities across the transect were lowest near the shore
while higher velocities were recorded at the center channel sites.
Another possibility is that the migration of sockeye fry near the shore
was a behavior exhibited by age 0+sockeye.McCart (1967)noted that
sockeye fry moving downstream in the Sabine River in British Columbia
migrated primarily next to the stream margins.
Catches of sockeye fry in the mobile trap were highest at the west bank
transect site (Fig.15 lower).The influence of the Yentna River (a
primary sockeye producer in the Susitna drainage coupled with the
apparent tendency for near-shore migration of sockeye fry may be the
primary reasons for the highest relative catches occurring at the west
bank site.
3.3.1.2 Age 1+
The outmigration of age 1+sockeye salmon during the open-water period
occurred primarily during May and June and was virtually complete by the
end of July.Catches of the 154 age 1+sockeye salmon captured at
Talkeetna Station were recorded from late May through late July (Fig.
16 upper).The highest catch rate of 0.5 fish per hour was recorded on
May 31 and corresponds with the high mainstem discharges recorded in
the middle river.The overtopping of the sloughs during these flows
probably displaced many of the age 1+sockeye from these sites,similar
to the observa ti ons for age 0+sockeye.Fi fty percent of the tota 1
catch at Tal keetna Station was recorded by June 4 and 95%of the
outmigration from the middle river was recorded by July 5.
Catches of the 1,174 age 1+sockeye collected at Flathorn were also
recorded from late May through late July (Fig.16 lower).The peak
catches were observed during June (50%by June 17)and the highest
catch of 3.5 fish per hour was recorded on June 24.Ninety-five
percent of the outmigration past this site was recorded by June 30 .
Fifty percent of the 592 age 1+sockeye salmon collected in the mobile
trap were recorded by June 15 with 95%of the total catch recorded by
early July (Fig.17 upper).Most of these fish were collected at the
west bank transect site (Fig.17 lower).Similar to age 0+sockeye,
the high catches at this site are probably due to its close proximity
to the confluence of the Yentna River.
41
FLATHORN STATION SOCKEYE 0+
IoI08lLE TftAII ~UE 111ea
-~
-
a:
8 ::>o:c:
a:
6 ~
:c:
u
I-
4 ~
10
AUG 1&AUO 1JUl1&
Oo'TE
JUl 1JUH1:5
100
828 =TOTAL SEASON CATCH
IH)%OF HIGHER CPUE
%OF CUMULATIVE
110 CATCH
70
I -'0
30
20
10
0
FLATHORN STATION SOCKEYE 0+.1985
HOItIZONTAL DlSTJtlIlUT10N
100 ""1"7""..,....,...-----------------------,
30
20
10
o 2 ~15 • 7
TRANSECT fIIOtNT
••10 11
~,
Figure 15.Sockeye salmon (age 0+)daily catch per unit effort and cumulative
catch (upper figure)and the catch as a percent of the highest catch ~.
per unit volume by transect point (lower figure)recorded at the
Flathorn Station mobile outmigrant trap,1985.-42
TALKEETNA STATION SOCKEYE 1 +
1985
100 ..,-....---------::...------------------10.5
0.4
cr
:::>ol0.3 ~
1
i ::I:r-0 .2 u
I t-I q:f-u
!
~O.I
!
OCTSEP
154 a TOTAL SEASON CATCH
%OF HIGHEST CPUE
- %OF CUMULATIVE CATCH
AUG
20
TO
.30
40
60
-70
o "ifrrTJ11Tlrmrrmm11T1JtimTi~mmTTTTTl/'tnn1fri't1mmTJlTl1rrrmmmmmmmlT1TJmm1TTTTmm1TTTTmmTJTTT1mmTt-°.°
t-
Zw
U 50crwa..
-
DATE
FLATHORN STATION SOCKEYE 1 +
1985
100 ...---------,;;:------::.....------------------...
90
3
80
::I:
U
t-q:
U
SEPAUG
1,174:TOTAL SEASON CATCH
%OF HI G HE ST CPU E
- %OF CUMULATIVE CATCH
MAY
I
O-tfTrTJlTl1T1TTT1mmmmmmrrrp11mmrTtmTT1'fi1l'TmTlT1'TTJmmmmmmmm:mrnfTTITTmm:mrnmmmml1'T1T1mmrn+-O
10
20
50
.30
60
40
70
!Zwucrwa..
-
DATE
Figure 16.Sockeye salmon (age 1+)daily catch per unit effort and cumulative
catch recorded at the Talkeetna (top graph)and Flathorn (bottom
graph)stationary outmigrant traps,1985 ..-
43
FLATHORN STATION SOCKEYE 1 +
YOIlll£~~t sao
100 11-------::=:;::;;;;;;;;;;;;....-------"1
~,
....
-
0::
::>
20 0:r
0::
L.J
ll.
::c
u....
10 j
592 =TOTAL SEASON CATCH
%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
10
20
JO
70
FLP.THORN STATION SOCKEYE '1 +,1985
MO"tZOHTAL.D1STl'18UT1OH
100 ."...7T-------------------..............,
I-
Z
W
U
0::
W
ll.
w
>....<
...J
W
0::
70
eo
JO
20
10
o 2 J 4 a I 7
TRANSECT POINT
•I 10 't
Figure 17.Sockeye salmon (age 1+)daily catch per unit effort and cumulative
catch (upper figure)and the catch as a percent of the highest catch
per unit volume by transect point (lower figure)recorded at the
F1athorn Station mobile outmigrant trap,1985.
~i
44
-
-
.....
r~
3.3.2 Size
3.3.2.1 Age 0+
Mean total lengths of sockeye salmon fry collected at Talkeetna Station
during June and July averaged smaller than sockeye fry collected at
Flathorn Station during the same periods (Table 11).Sockeye fry
collected in the mobile trap were consistantly larger than fry
collected in the stationary traps after early June.By late July,mean
total lengths of sockeye fry collected in the stationary traps in both
reaches were the same length (50 mm).
3.3.2.2 Age 1+
Age 1+sockeye salmon collected at Talkeetna Station averaged 69 mm
total length during their outmigration from the middle river in 1985
while age 1+sockeye caught at Flathorn Station averaged 80 mm.The
difference in the mean lengths between these two reaches may be due to
better rearing and overwintering conditions in the lower river relative
to the middle river.Sockeye fry in the middle reach rear primarily in
sloughs while many sockeye rearing areas in the lower river are
associated with lake systems.These lakes probably provide additional
growth potential for sockeye prior to outmigration.Marcuson (1985)
reported mean lengths for age 1+sockeye in Larson Lake in the Talkeetna
River drainage that were approximately 10 mm longer than observed for
age 1+sockeye in the middle reach of the Susitna River.
3.3.3 Mark-and-recapture
A total of 11,436 sockeye salmon fry (mean;34 mm)were coded wire
tagged and rel eased at sloughs 8A and 11 between June 2 and June 26,
1985.Tag retention rates through release were 96.9%and tagging
mortality was 1.7%.
A total of 189 tagged sockeye fry (1.7%of the total tagged sockeye fry
released)were recovered from the 5,068 sockeye fry captured and
examined for tags at Talkeetna Station.Recoveries of coded wire tagged
sockeye fry were made from °to 96 days (mean;19 days)following their
release at the tagging sites.Tag retention recorded at the outmigrant
traps (96.4%)was similar to the tag retention at release indicating
that no significant tag loss was occurring during the summer.No coded
wire tagged fish were collected at Flathorn Station in 1985.
Six sockeye salmon which were tagged and released during 1984 were
recovered from the 154 age 1+sockeye captured at Talkeetna Station in
1985.Also,six sockeye salmon marked and released during 1984 were
recovered during sampling at Trapper Creek Sidechannel (RM 91.5)in
May,1985.
Roth and Stratton (1985)postulated that middle river sockeye juveniles
could be grouped into three catagories.The first group were those fish
which spent their entire freshwater period in the middle river,
45
1M
Tab 1e 11.Sockeye salmon (age 0+)mean tota 1 1ength t range of
lengths t and associated confidence intervals by site
and sampling period in the Susitna River t 1985.
46
""
-
-
"...
I~
overwintered in this reach,and then migrated to the ocean as age 1+
fi sh.These fi sh were represented in the 1985 catches by the age 1+
sockeye collected at Ta"lkeetna Station,six of which had been coded
wire tagged in this reach the previous summer.The second group of
sockeye salmon juveniles are those fish which rear for a portion of
.their first summer in the middle river and then migrate to areas in the
lower river to overwinter before entering the ocean as age 1+fish the
following spring.The six coded wire tagged age 1+sockeye recaptured
at Trapper Creek Sidechannel were fish from this life history type.
The third group of juvenile sockeye salmon are made up of fish which
spend a portion of their first summer rearing in the middle river and
then begin a downstream migration,eventually entering the ocean as age
0+fish.
However,the percentages of the total middle river outmigration
represented by type two and three 1i fe hi stori es is not known.In
addition to the tagged fish captured at Trapper Creek Sidechannel,
coded wi re tagged sockeye fry have also been recovered at Goose Creek
Sidechannel (RM 73.1)indicating that many of the sockeye migrating out
of the middle river as fry are successful in finding suitable rearing
habitats in the lower river.Scales collected from adults returning to
the middle river to spawn indicates that sockeye salmon juveniles which
migrate to the ocean as age 0+fish (group 3)probably have very low
survival rates (Barrett et al.1984).
3.3.4 Population estimates
Using the method by Schaefer (1951),the population of age 0+sockeye
salmon above Talkeetna Station during 1985 was estimated to be 309,000
fry.A similar estimate,305,000 (95%C.1.=265,000 to 352,000)was
calculated for the middle river using the revised Petersen estimate
provided by Chapman (1951).The similarity in the population estimates
obtained from both methods suggests that the recovery of marked and
unmarked sockeye fry at Tal keetna Station was random so that sockeye
salmon fry population estimates in the middle river may not need to be
stratified.
3.4 Chum Salmon
3.4.1 Catch per unit effort
Chum salmon fry were captured incidentally during the cold branding
program.A total of 489 chum salmon fry were collected in 648 trap
days (mean;0.8 fry per trap per day)between July 11 and August 9 in
Indian River,and 918 chum fry were collected by beach seine in Portage
Creek.
The peak catch rate at Talkeetna Stati on of 30 chum fry per hour
occurred May 27,the first day of sampling (Fig.18 upper).This is
similar to the high catches recorded for age 0+sockeye and is probably
a result of the season high mainstem discharges during break-up which
flushed the post-emergent chum fry from their natal sloughs and side
47
TALKEETNA STATION CHUM FRY
198~
100
28 ~,
90
80 24
~
70 a::20 :::l
60
0
I-
:I:
Zw 8,042 •TOTAL SEASON CATCH 16 a::
u 50 w
a::%OF HIGHEST CPUE a..wa..-%OF CUMULATIVE CATCH ~
40 12 :I:
u
I-
30 ex
8 u
20
10
4
a 0
MAY AUG SEP OCT
I
DATE
FLATHORN STATION CHUM FRY
1985
100
90
80 [~,
70 a::
:::l
60 L0
:I:~'I
!Z 11,279 =TOTAL SEASON CATCH
w %OF HIGHEST CPUE a::
u ~O -%OF CUMULATIVE CATCH w
Q:
W a..
Q.~i
40 ~:I:
I u
[I-
':50 ex
~u
20 f--5Ir-
I
10
~
!
0 0
MAY JUNE AUG SEP.~'I
DATE
Figure 18.Chum salmon fry daily catch unit effort and'cumul at;ve catch '"'"per
recorded at the Talkeetna (top graph)and Flathorn (bottom graph)
stationary outmigrant traps,1985.
48
..-
-
channels.The migratory behavior of chum fry may also have influenced
this peak as Roth et al.(1984)showed that chum fry outmigration in
the middle river was strongly correlated (r =0.89)with discharge.
Fifty percent of the 8,042 chum salmon fry recovered at Talkeetna
Station during 1985 were captured by June 5,ten days after sampl ing
began.The outmigration of chum fry from the middle river was
essentially complete (95%)by mid-July.
The timing of chum salmon outmigration past Flathorn St~tion was
similar to the timing recorded past Talkeetna Station (Fig.18).
Outmigration was underway when the traps were deployed in late May and
the peak catch of 22.8 fry per hour was recorded on June 27 (Fig.18
lower).Fifty percent of the 11,279 chum salmon fry collected in the
stationary traps at Flathorn Station were captured by June 13 and 95%of
the chum fry were collected by July 2.
The peak catch of the 2,012 chum fry captured in the mobile trap was
63.9 fry per hour recorded on June 30,four days after 50%of the total
season catch was reached (Fig.19 upper).The timing patterns were
similar for both the stationary and mobile traps with peak catches
occurring in early and late .June.High chum salmon fry catches were
recorded at all of the transect sites (Fig.19 lower)indicating a
relatively uniform horizontal distribution of chum fry across the
channel at this site during their outmigration.
3.4.2 Size
Outmigrating chum salmon fry in both the middle and lower reaches of
the Susitna River averaged approximately 42 mm in 1985.The upper range
of lengths observed for chum fry (67 mm)shows that rearing and growth
was occurring for some of the chum fry before they outmigrated.
3.4.3 Mark-and-recapture
A total of 13,341 coded wi re tagged chum fry averagi ng 40mm total
length were released at sites in the middle rlver in 1985.Tag
retention through release was 93.2%and tagging mortality was 0.7%.In
addition,897 cold-branded chum fry were released in Portage Creek.
Seventy-eight of these marked fish were recaptured at this site up to
three weeks after release,again showing that some chum salmon rearing
was occurring.
Thirty-seven coded wire tagged chum salmon fry (0.3%of the total tagged
chum released)were recovered at Talkeetna Station during 1985.
Recoveries were made from 0 to 15 days (mean;4 days)following their
release at the tagging sites.Tag retention past Talkeetna Station for
coded wire tagged chum fry was 94.6%indicating that chum fry were
retaining their tags during outmigration.Also,four of the cold
branded chum fry released in Portage Creek (0.4%of the total branded
chum released)were recaptured at Talkeetna Station.No marked chum
salmon fry were collected at Flathorn Station in 1985.
49
~,
AUO 1JUL15
D4TE
JUL 1JUH13
FLATHORN STATION CHUM FRY
..<>BIll:~CPUI:11188
100
60
go
eo 50
a::
70 ~
0
40 ::E:eo 2,012::TOTAL SEASON CATCH a::I %OF HIGHER CPUE l&J
:10-_%OF CUMULATIVE CATCH Q.
30 :t:
0<40 ~-<
20 0
30
20
10
to
0 0
FLATHORN STATION CHUM FRY,1985
HOR1Z0NT~DlSTRfIMJT10N
-
•10 If•..15 • 7
ntANSECT POINT
2o
10
20
100 ........~-----------------------,
Figure 19.Chum salmon fry daily catch per unit effort and cumulative catch
(upper figure)and the catch as a percent of the highest catch per
u~it volume by transect point (lower figure)recorded at the
Flathorn Station mobile outmigrant trap.1985.
50
-
-
"...
.....
.....
3.4.4 Population estimates
A population of 3,155,000 chum salmon fry was estimated above Talkeetna
Station in 1985 using the method outlined by Schaefer (1951).In
comparison,2,737,000 (95%C.I.=2,031,000 to 3,782,000)chum fry were
estimated using the revised Petersen estimate presented by Chapman
(1951).As the Schaefer estimate lies within the 95%confidence
intervals for the Petersen estimate,stratification may not be needed
for middle river chum fry population estimates.
3.5 Pink Salmon
The stationary outmigrant traps at Talkeetna Station collected 214 pink
salmon fry during 1985.Fifty percent of the oumigration was recorded
by June 24 and 95%was recorded by July 14 (Fig.20 upper).Daily
catches did not exceed 1.0 fish per hour and the the last catch was
recorded on July 25.The low catches of were probably due to the
outmigration of pink fry from the middle river prior to break-up.
Also,those fish which were in the middle river following break-up may
have migrated in the center of the river,beyond the sampl ing area of
the stationary bank traps.
The total catch of pink fry at the Flathorn stationary traps was 4,351
fish.Fifty percent of the season's catch was recorded on June 20 and
the highest daily catch (12.2 fry per hour)was recorded on June 24
(Fig.20 lower).The last pink salmon fry observed at Flathorn Station
was collected on July 24.
The mobile trap at Flathorn Station collected 1,974 pink salmon fry with
50%of the captures recorded by June 17 (Fig.21 upper).The peak
da i ly catch of 51.2 fi sh per hour occurred on June 11,and the 1ast
catch was recorded on August 3.The highest catches of pink salmon fry
were recorded in the center-channel transect sites (Fig.21 lower).
Pink fry were the only species of juvenile salmon to display this
horizontal distribution pattern.They may possibly have been
outmigrating in association with the higher velocities in the
center-channel transects.
3.5.2 Size
Pink salmon in the Susitna River outmigrate shortly after emerging as
shown by the mean length of 37 mm during outmigration.A few larger
pink fry (to 48 mm)were collected indicating that a small percentage of
fry were feeding and growing before outmigrating .
51
TALKEETNA STATION PINK FRY
1985
100 .-----,,------------:~---------------__rO.4
0.3
0.1
I
I a::iO.2 ~
::I:
U
I-
<l:
U
OCTSEPAUG
214 z TOTAL SEASON CATCH
%OF HIGHEST CPUE
- %OF CUMULATIVE CATCH
to
o -mTjlTTmmmmTll'ltrtrm1TlTfmmmmmifmrnrrrfnTl'lll'mrnmmmrrmmmmTT[TTmmmrrmrnmmmrrJTTTT1mrrt-0.°
40 ~
50
20
:so
60
80
70
90
....zwua::w
Q.
DATE
FLATHORN STATION PINK FRY
1985
100 -r-------,r---:;;;;....-------------------,
80
12
10
flf/ilF!f;J
-.
2
a:
8 6
::I:
::I:
U
4 I-<l:
U
a:
6 wc..
OCTSEPAUG
4.351 z TOTAL SEASON CATCH
%OF HIGHEST CPU E
- %OF CUMULATIVE CATCH
10
0-1tTrl'J1l1TrrnrrmmmmmmTJTlTlTTTmmmiTTfiT1:mmrnrmrnnrmmrrmrmmTTITJTTTTm11TTTlTTTmTTTmrrTrTflrrrrrr:rmt--0
50
40
20
70
30
60
!Zwua::w
Q.
DATE
Figure 20.Pink salmon fry daily catch per unit effort and cumulative catch
recorded at the Talkeetna (top graph)and Flathorn (bottom graph)
stationary outmigrant traps,1985.
52 ~I
FLATHORN STATION PINK FRY
..08ILE TftAII ~1I lIB
100 -r---r-------:::....--------------50
a:
:loz
30 a:
LLI
0..
Zo
20 I-
ooto
10
40
1,974 =TOTAL SEASON CATCH
%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
10
70
eo
20
o -mTTT1mrrrnTTTrTTTTTT1lTTTm1milnTmrTTT1TTIrTTTT'n"lrnT'l"n"I'"""'I"'I"'I"'I.................J-0
JUN 15
30
FLATHORN STATION PINK FRY.-1 985
100 1 ~rr__HO_"f_Z_O_NT_AL-=-.:Of~STftI~::..:I!Il1T1O:..:....:..=..:.:N --.
-
so
70
20
10
o 2 J ..D • 7
TltANSECT POINT
II g fa 11
.-,
Figure 21.Pink salmon fry daily catch per unit effort and cumulative catch
(upper figure)and the catch as a percent of the highest catch per
unit volume by transect point (lower figure)recorded at.the
Flathorn Station mobile outmigrant trap,1985.
53
4.0 CONTRIBUTORS
Project Leader
Data Processing
Graphics
Typing
Editors
Data Collection
54
~,Larry Bartlett
Allen Bingham
Alice Freeman ~
Donna Buchholz
Andy Hoffmann
Carol Hepl er
Skeers Word Processing
Larry Bartlett
Richard Cannon
Richard Sundet """
James Anderson
Robert Bale ~
Dean Beers
Jeff Bigler
Alden Blaney /Ii'lm':'
Tom Crowe
Larry Dugan
Dan Gray
Roger Harding ....,
Andy Hoffmann
Mi ke Hoyt
John McDonnell ~
Doug Patrick
Roxann Peterson
Isaac Quera 1 ~
Craig Richards
Diane Roche
Kent Roth
Sheryl Salasky
Kathy Sheehan
Mary Shiffer
Linda Soquet """
Mike Stratton
Dave Voska
Aimee Weseman -
..-
-
5.0 ACKNOWLEDGEMENTS
Funding for this study was provided by the State of Alaska,Alaska Power
Authority.
We woul d 1i ke to express our appreci ati on for the 1ogi sti ca 1 servi ces
provided by Air Logistics and the Alaska Railroad.
We woul d also 1i ke to extend our thanks to the 1oca 1 residents and
property owners around Talkeetna including Bill Bleakley and Harold and
Nancy Larson.
55
6.0 LITERATURE CITED
Alaska Department of Fish and Game (ADF&G).1983.Resident and juve-
nile anadromous fish studies on the Susitna River below Devil
Canyon,1982.Susitna Hydro aquatic studies phase II basic data
report.Volume 3.Alaska Department of Fish and Game Susitna
~ydro Aquatic Studies,Anchorage,Alaska.
Barrett,B.M.,F.M.Thompson,and S.N.Wick.1984.Adult anadromous
fish investigations:May-October 1983.Alaska Department of Fish
and Game Susitna Hydro Aquatic Studies Report No.1.Anchorage,
Alaska.
-
1985.Adult salmon investigations:
Hydro Aquatic Studies.Report No.6.
and Game,Anchorage,Alaska.
May-October 1984.Susitna
Alaska Department of Fish
Chapman,D.G.1951.Some properties of the hypergeometric distribution
with applications to zoological sample censuses.University of
California Publication Statistics 1:131-160.
Dixon,W.J.,M.B.Brown,L.Engelman,J.W.Frane,M.A.Hill,R.I.
Jennrich,and J.D.TORorek (eds.).1981.BMDP Statistical Soft-
ware 1981.University of California.Berkley,California.
Le Cren,E.D.1951.The length-weight relationship and seasonal cycle
in gonad weight and condition in the perch (Perca fluviatilis).
Journal of Animal Ecology 20(2):201-219.
Marcuson,P.1985.Larson Lake project progress report.Cook Inlet
Aquaculture Association,Anchorage,Alaska.
McCart,P.1967.Behavior and ecology of sockeye salmon fry in the
Babine River.Journal of the Fisheries Research Board of Canada
24(2):375-428.
~I
'"""
McConnell,R.J.,and G.R.Snyder.1972.Key to field identification of
anadromous juvenile salmonids in the Pacific Northwest.National
Oceanic and Atmospheric Administration Technical Report,National
Marine Fisheries Service CIRC-366.6 pp.
Morrow,J.E.1980.The freshwater fishes of Alaska.Alaska Northwest
Publishing Company,Anchorage,Alaska.~~
Roth,K.J.,D.C.Gray,and D.C.Schmidt.1984.The outmigration of
juvenile salmon from the Susitna River above the Chul itna River
confluence.Part 1 in D.C.Schmidt,S.S.Hale,D.L.Crawford,and
P.M.Suchanek (eds.)-.-1984.Resident and juvenile anadromous fish
investigations (May-October 1983).Susitna Hydro Aquatic Studies.
Report No.2.Alaska Department of Fish and Game,Anchorage,
Alaska.
56
"
.....,
--
-
Roth,K.J.,and M.E.Stratton.1985.The migration and growth of
juvenile salmon in the Susitna River.Part 1 in:D.C.Schmidt,
S.S.Hale,and D.L.Crawford,(eds.).Resident and juvenile
anadromous investigations (May-October 1984).Susitna Aquatic
Studies Program.Report No.7.Alaska Department of Fish and
Game,Anchorage,Alaska.
Schaefer,M.B.1951.Estimation of the size of animal populations by
marking experiments.United States Fish and Wildlife Service,
Fisheries Bulletin 52:189-203.
Schmidt,D.C.,S.S.Hale,D.L.Crawford,and P.M.Suchanek (eds.).
1984.Resident and juvenile anadromous fish investigations (May-
October 1984).Alaska Department of Fish and Game Susitna Hydro
Aquatic Studies.Report No.2.Anchorage,Alaska.
Stratton,M.E.1986.Summary of juvenile chinook and coho salmon
winter studies in the middle Susitna River,1984-85.Part 2 of:
ADF&G.Winter studies of Resident and juvenile anadromous fish
investigations (October 1984-May 1985).Susitna Aquatic Studies
Program.Report No.11.Alaska Department of Fish and Game,
Anchorage,Alaska.
Suchanek,P.M.,R.P.marshall,5.5.Hale,and D.C.Schmidt.1984.
Juvenile salmon rearing suitability criteria.Part 3 in D.C.
Schmidt,S.S.Hale,D.L.Crawford,and P.M.Suchanek (eds.)--.1984.
Res i dent and juvenil e anadromous fi sh i nvesti gat ions (May-October
1983).Alaska Department of Fish and Game Susitna Hydro Aquatic
Studies.Report No.2.Anchorage,Alaska.
Thompson,F.M.,S.N.
investigations:
Report No.13.
Alaska.
Wick,and B.L.Stratton.1986.Adult salmon
May-October 1985.Susitna Hydro Aquatic Studies.
Alaska Department of Fish and Game,Anchorage,
Trautman,M.B.1973.A guide to the collection and identification of
pre-smolt Pacific salmon in Alaska with an illustrated key.
National Oceanographic and Atmospheric Administration Technical
Memorandum.NMFS ABFL-2.
57
7.0 APPENDICES
Appendix A -Discharge,Temperature,and Turbidity for Talkeetna and
Flathorn Stations,1985.
Appendix B -Brand Symbols,Release Dates,and the Number of Fish
Branded by Species and Collection Site in the Middle
Reach of the Susitna River During the Cold-Branding
Program,1984-1985.
Appendix C -Chum and Sockeye Salmon Cold-Branding Experiment.
Appendix 0 -Flathorn Station Juvenile Salmon Catch Data,1985.
Appendix E -Length and Weight Relationship Data for Juvenile Salmon,
1985.
58
-
m::-.,
APPENDIX A
Discharge,Temperature,and Turbidity for Talkeetna and
Flathorn Stations,1985
A-I
GOLD CREEK DISCHARGE
1..40.,.-----.-------------------,..
a
a ....__.._..._,..__....._...._..._~~
OCT
10
~:
il la
.-
r
-
SUSITNA'STATION DISCHARGE,..
SAMPLING ENDED)
SAMPLING BEGAN
ISM]-r----------r--------------,
180
170
180
1:50
140
130
120
110
100
eo
110
10
eo
:so
40
'"20
10
O ....~---.nn...lIftI....,......---,..--...
f"'"
I
-
Appendix Figure A.I.Mainstem discharge in the Susitna River measured
at the USGS gaging stations at Gold Creek Station
(upper figure)and Susitna Station (lower
figure)I 1985.
A-2
TALKEETNA STATION
uUla
--TEMPERATURE
-TURBIDITY
400
:)
t-
Z
)-
t-
o
m
D::
:)
t-
-
Appendix Figure A.2.Talkeetna Station
turbidity,1985.
A-3
water temperature and
:J
I-
Z
>-
I-
o
ID
a:
:J
I-
800
400
600
200
-TEMPERATURE
-TURBIDITY
FLATHORN STATION...,......,..
t.-r-------~-------------__..
15,.
13
12
11
10
••
7
•
5
•
3
2
1
Q-iI'fl""",mmmmmm""l"rmmrrnmrmmrmmmrr""""""rmmrmmrmlfll'l'lll1'l"!'!'!"'"mt-"O
WAY,
..-
.....
-
-TEMPERATURE
-TURBIDITY
.....
-
FLATHORN STATION
EAST ttAH1<.18A
18 .,..--------;;---=-..::...--=-~----------,
HI,.
13
12
11
10
••
7
•
5
•
3
2
600
400
200
:J
I-
Z
>-
I-
o
lPa:
:J
I-
Appendix Figure A.3.Flathorn Station water temperature and turbidity
recorded for the west (upper figure)and east
(lower figure)bank Qutmigrant traps,1985.
,d.-4
!I
A-5
Appendix Table A.2.FTathorn Station water temperature and turbidity recorded for the
west (trap 1)and east (trap 2)bank outmigrant traps,1985.
TRAP 1 TRAP 2 TRAP 1 TRAP 2
------------------------------.-------------------------------------
~ATER WATER ~ATER WATER
TEI1P.TURBIDITY TEI1P.TURBIDITY TEI1P,TURBIDITY TEPIP.TURBIDiTY
DATE (C)(NTUI Ie)IHTO)DATE IC>IHTU>IC)INTU)
----------------- -----------------
----------------------------------
850527 850726 11.4 11.4
850528 6.8 132 5.8 194 850727 12.4 480 11.B,560
850529 5.0 138 4.8 124 850728 11.4 472 12.2 424
850530 3.6 104 4.5 122 850729 11.8 512 33b
r 850531 3.4 100.4.4 116 85073(1 10.4 480 392
850601 3.5 88 4.5 104 850731 9.4 504 II.3 344
850002 4.8 80 5.6 73 850801 9.1 340 10.1 296
850b03 5.2 84 6.0 110 850802 10.6 4b4 11.8 408
850604 7.0 52 7.2 102 850803 11.7 12.6
850605 7.0 80 7.6 184 850804 10.6 544 11.4 432
850606 7.2 96 7.0 192 850805 10.0 432 12.0 208
850607 6.4 104 b.6 172 85080b 9.9 392 11.7 256
85060B 6.4 76 6.2 120 850807 10.5 432 11.9 408
r-850609 5.8 60 7.0 104 850808 8.0 344 9.8 368
850610 7.0 4b 8.2 92 850809 7.0 512 9.0 366
850611 8.0 56 8.5 78 850810 B.b 448 8.4 296
850612 8.4 56 8.3 88 850811 7.8 3bB 8.8 24B
850b13 8.0 76 8.0 112 850812 8.4 8.4
r-850614 7.b bO 7.B 140 850813 192 9.0 384
I
!850b15 8.0 85 8.4 bl 850814 9.0 lb4 9.4 3bO
850616 8.1 96-B.3 104 850815 512 9.b 272
850617 7.8 68 8.1 104 850816 560 9.4 268-850618 7.9 7b 8.0 96 850817 6.0 720 8.8 52,8
850619 7.8 78 8.6 112 850818 B.b 340 10.4 23b
850620 9.3 96 850819 9.0 400 9.4 324
850621 66 8.2 98 850820 8.3 2BB 8.9 224
850622 8.5 74 9.8 90 850821 8.2 232 8.3 17b
850623 10.1 68 10.3 96 850822 7.6 168 8.3 192
8S0b24 10.0 76 10.6 86 850823 8.3 128 8.5 128
850625 9.4 98 10.0 110 850824 9.0 9.a
85ab26 9.4 101 9.0 104 850825 9.7 113 9.8 101
850627 10.2 142 9.6 176 B50B2b 9.0 112 10.4 109
850628 11.0 184 11.4 164 850827 9.1 112 9.8 120
850629 10.6 320 10.8 252 850828 9.8 10.0
850b30 11.0 33b 11.8 25b 850829 9.8 18b 10.0 154
850701 10.8 380 13.0 304 850830 92 9.2 lOb
850702 9.8 b88 10.6 376 850831 8.8 132 10.5 120
850703 7.8 592 8.5 496 850901 8.8
850704 7.4 878 9.0 788 850902 9.2 132 9.2 132
850705 7.5 464 9.8 336 850903 196 9.1 15B
850706 10,0 11.2 950904 8.5 208 9.2 240
850707 11.0 630 12.4 640 850905 9.3 14B 8.1 182
850708 9.1 10.8 850906 7.9 140 8.2 156
850709 a.2 10.4 850907 8.1 8.3
850710 10.0 704 !I.6 57b 850908 ---8.2
850711 11.0 405 11.8 445 850909 7.9 8.0
850712 11.1 384 11.8 392 850910 7.4 8.0
850713 10.6 370 12.2 38B 850911 b.4 6.b
850714 10.3 316 11.9 32B 850912 8.5 b.9
850715 10.4 3b4 11.9 350 850913 5.9 6.0
85071/,11.0 320 12.6 29b 850914 5.9
850717 11.B 303 13.1 332 850915 6.7 7.1
850718 12.0 468 12.5 432 85091b 7.6 7.2
850719 12.0 332 14.1 328 850917 6.3 0.4
850720 12.0 520 12.8 512 850918 4.8 b.O
850721 10.4 384 12.0 488 850919 4.0 4.2
850722 9.0 480 10.4 688 850920 3.5 4.0
850723 8.8 504 10.6 488 850921 4.0 4.2
850724 9.4 344 11.4 392 850922 4.0 4,0
850725 10.0 328 336 850923 4.1 4.6
~
A-6
-,
-
-
APPENDIX B
Brand Symbols,Release Dates,and the Number of Fish Branded
by Species and Collection Site in the Middle Reach of the
Susitna River During the Cold-Branding Program,1984-1985
B-1
-
-
-
-
Cold branding of juvenile salmon has been conducted in the middle reach
of the Susitna River since 1984.This appendix is provided so that
other investigators who may encounter any of these branded fish can
determine the location and dates of their release.The information
presented covers the 1984 summer cold branding study (July to October),
the 1985 summer branding study (July to October),and the 1985 wi nter
study (November and December)(Appendix Tables B.1,B.2,and B.3).
These data coupled with the branding and release information presented
in Stratton (1986)provide all of the brand symbols and locations as
well as the release sites and dates for juvenile salmon branded in the
Susitna Ri ver duri ng the Susitna Aquati c Studies program. Brandi ng
symbol and location on the fish presented in the tables are described in
Appendix Figure B.1.
B-2
-
Six Branding Locations (.)
,.....
i
Left Side
BRANDING LOCATION CODES
FL -FRONT LEFT
ML -MIDDLE LEFT
BL -BACK LEFT
BR -BACK RIGHT
MR -MIDDLE RIGHT
FR -FRONT RIGHT
Right Side
Samp[e Cold Brands
~~U n c
E 3w fTl
T f--1 --f The brand on this fish would be
recorded on the field data form
as "SLW",where the BL is the
~L .....J l r branding location and w is the
brand used.
I l/1 S
Appendix Figure B.l.Branding locations,branding location codes,and sample
brands used for cold branding juvenile salmon,1985.
B-3
Appfndix Tible B.1.Brind 5ylbol,rflfiS.ditfS,ind the nulbtr of fish brindtd
by species Ind collectiDn Sltf in the liddlt reich of the
Susitni River during thf sUller cold-brinding prDgril,1995.
RELEASE SITE -INDIAN RIVER "OUTH (SITE II
I DF FISH BRANDED BY SPECIES
BRAND RElEASE
SY"80L DATES CHINOOK COHO CHUI'I
--------------------------------------------------------
lito 119-20 ~,B45 1~4 0
1110 7/21 2,43~253 0
11.0 7/26-31 1,760 101 59
11.0 8/1-10 2,043 127 39
1110 8/13-19 993 76 0
11.0 8/19-25 1,103 46 0
III 0 8/28-9/2 1,121 59 0
11.0 9/2-8 875 48 0
Blo 9/12-18 747 81 0
BRo 91l8-24 576 43 0
FRo 9/27-10/4 B05 60 0
FLo 10/8-12 503 40 0
Blo 10/12 412 44 0
RELEASE SITE -INDIAN RIVER SITE 2
,OF FISH BRANDED BY SPECIES
BRAND RELEASE
SY"BOL DATES CHINOOK COHO CHUf!
--------------------------------------------------------
!IR+119-14 268 27 0
IIlH 7/1B-21 491 33 0
II.~7/28-8Jl 192 15 1
FR+8J5-9 654 70 0
DR ...8117-21 445 76 0
BR::r 8/25-29 684 75 °BRH 9/3-7 527 101 1
FR~9JI1-17 467 70 0
riO 9/25 177 37 0
FRO 1011 246 66 0
FRO 1017 235 41 0
RELEASE SITE -INDIAN RIVER SITE 3
I OF FISH BRANDED BY SPECIES
BRAND RELEASE
SY"BOl OATES CHINOOK COHO CHUft
--------------------------------------------------------
11..+7/9-14 1,301 3 0
",-H 7/18-21 849 23 0
FRX 7/28-8/1 540 28 40
FLX 8/5-9 570 46 0
BRX 8/17-21 278 42 0
Bl~8/25-29 460 65 0
BlH 9/3-7 281 40 0
Fl H 9/11-17 67 21 0
III 0 9/25 90 23 0
FLO 1011 168 19 0
It.0 1017 95 16 0
B-4
~,
~l
8-5
~,
Appendix Table B.2.Brand sylbol,release dates,and the nUlber of fish brandtd
by s~eCltS and collection s1te in the lidd1e rtach of the
Susi na Rivlr during thl Mintlr co1d-branding progra.,1985.
~I
I OF FISH RELEASED
BRAND RELEASE RELEASE -SyltBOL SITE DATE CHINOOK COHO
----------------------------------------------------------------------
FLE SLOUGH 22 11/6 30 0
ItlE SLOUGH 22 11/6 157 0 ~.
BlE SLOOOH 22 11/6 115 2
Bl3 SLOUGH 22 11120 119 0
FR3 SLDUGH 22 11120 258 14
FRITI SLOUGH 22 12/6 140 0 ~l
BRITI SLOUGH 22 12/6 77 2
BRw SLOUGH 22 12/19 141 0
FLw SLOUGH 22 12/19 1611 2
FRJ SLOUGH 20 12120 238 0 ~
BRn INDIAN RIVER 11 III 115 97
FL n INDIAN RIVER 11 III 41 26
FR"INDIAN RIVER U/7 50 10 -,
BL v INDIAN RIVER 11120 219 20
FRv INDIAN RIVER 11120 10 3
FL v INDIAN RIVER U120 34 Be
BR>INDIAN RIVER 12/1l 20 0
BL>INDIAN RIVER 12/11 7 3
FR>INDIAN RIVER 12/6 13 28
FL<INDIAN RIVER 12/19 44 9
BR<INDIAN RIVER 12119 0 2
·BL<INDIAN RIVER 12/19 13 211 ""'"
FLe SLOUGH 9A HIli 5 0
ItLe SLOUSH 9A 11 III 30 0
BLe SLOUGH 9A 11 III 22 0
FRe SLOUSH 9A 11 III 15 1 -BRe SLOUGH 9A 11 III 78 1
IR..:::J SLOUGH 9A 11120 5 0
BL:::J SLOUSH 9A 11120 11111 4
FR:::J SLOUGH 9A 11/20 201 2 -BR:::J SLOUGH 9A 11120 U4 0
FL:::J SLOUGH 9A U120 131 0
BLU SLOUGH 9A 12/12 2 0
FRu SLOUGH 9A 12/12 10 0
BR u SLOUGH 9A 12/12 84 1
FLu SLDUGH 9A 12/12 43 1
ItLu SLOUGH 9A 12/12 8 0
FRL VASTO IDSLOUGH 11I1I 3S 1
Fl..J WASTOID SlOUGH 11I1I 1 5
FLVI SLOUGH bA 11/7 111 61
ilL VI SLOUGH lIA 11121 7 14
ItR Vl SLOUGH bA 11121 4 38
BR Lit SlOUGH 6A 12/12 2 6
BL Lit SLOUGH bA 12/12 1 14
ItR 1 HIDDEN SlOUBH 11120 53 S6 ,..."
FL T HIDDEN SLOUGH ll/21 72 10
BRT HIDDEN SLOUGH 12/4 56 12
BL 1 HIDDEN SLOUGH 1214 47 21
FRc TRAPPER ,CREEK SIDECHANNEL 1117 B 10
FlJ TRAPPER CREEK SIDECHANNEL 11/7 Sl 109
"RC TRAPPER CREEK SIDECHANNEL 11121 49 51
"lJ TRAPPER CREEK SIDECHANHEL 11/21 37 21
SRC TRAPPER CREEK SIDECHANNEL 1214 3 2
BLJ TRAPPER CREEK SIDECHANNEL 1214 33 28
B-6
--
App!ndix Tabl!9.3.Brand sylbDl,release dates,and the nUlb!r Df fish branded
by 5~eCles and cDllection sIte in the liddle reach of the
Susi na River during t~e sUller cDld-branding prDgral,1984.
I OF FISH RELEASED
BRA.ID RELEASE RELEASE
SY"BOL SITE DATE CHINOOK COHO---------------------------------------------------------------------------
"Rn PORTAGE CREEK 6/29 6 0
"RE PORTAGE CREEK 7/1-2 12 0
"RJ PORTAGE CREEK 7/3,B/24 169 0
ItRw SLOUGH 22 9/11-13 2,734 0
"RE SLOUGH 21 9/24-26 229 2
~-"L3 SLOUGH 20 10/11 159
"Rr SLOUGH 19 B/29 703 22
~SLOUGH 17 9/29 323"LJ 21
"R-SLOUGH 16 7/16 158 0
filL -SLOUGH 16 7/17 b9 0
fIIR\SLOUGH 16 7/18 138 0
"L I SLOUGH 16 7/19 73 0
"R ::>INDIAN RIYER 7/14-20 1,983 360
"l ::>INDIAN RIVER 7/29 779 7
fIIRc:INDIAH RIYER 812 1,103 10
"Lc:INDIAN RIVER 8/9-13 4,957 54
"RU INDIAH RIVER 8/9-12 1,913 100
"Rn INDIAN RIYER 9/24 3,399 120
"LU INDIAN RIVER 9/26-9/12 2,715 190
IlLn INDIAN RIVER 9/9-13 3,122 127
ilL :s:INDIAN RIYER 9/23-25 1,583 183
fIIR :s:INDIAN RIVER 9/23-27 1,734 23
FL::>IHDIAN RIYER 10/9-10 1,335 159
FRc:INDIAN RIVER 10/9-11 6B8 57
fIIR l-1 SLOUGH 14 9110 182 S3
"RT UPPER SLOUGH 11 SIDECHANNEL 7/29 130 0
"LT UPPER SlOUSH 11 SIDECHANNEl 7/30 194 0
fIIRl.UPPER SLOUGH II SIDECHANKEL 7/31 179 0
ilL 1.UPPER SLOUGH 11 SIDECHANNEl 8/1 173 0
~:a'I~
1m3 SIDECHANNEL lOA 7/16 231 0
"LE SIDECHANNEL lOA 7/17 119 0
"RfTI SIDECHANNEL lOA 7/19 196 0
"L ILl SLOUGH 10 9/26 195 0
"R -l "DOSE SLOUGH B/9 239 0
"L~"DOSE SLOUGH 9/9 480 0
IlR~1100SE SLOUGH B/I0 212 0
ilL -l 1100SE SLOUGH 8/11 137 0
B-7
-
-
APPENDIX C
Chum and Sockeye Salmon Cold-Branding Experiment
C-1
-
-
-
One-ha If 1ength coded wi re tags have been used since 1983 to mark
post-emergent chum and sockeye salmon fry in the middle reach of the
Susitna River between the Chul itna River confluence and Devil Canyon
(Roth et al.1984;Roth and Stratton 1985).The marked fish were
recaptured at Talkeetna Station (RM 103.0)to provide population and
survival estimates for outmigrating chum and sockeye salmon fry.
Although this technique has proven effective in providing a long term
discernable mark for small salmon fry,the high costs associated with
coded wire tagging program may prevent its use by other marking studies.
A marking experiment was conducted in 1985 to test cold branding as a
more cost-effective alternative for marking post-emergent chum and
sockeye salmon.
The pilot study was conducted from June 22 to July 7.Samples of chum
and sockeye salmon fry collected from Slough 11 (RM 135.3)were used to
test the effectiveness of cold branding.To determine which length of
time that the fish were held against the branding apparatus provided the
best mark,three different branding times were tested.Sub-samples of
50 fi sh of each speci es were branded for 1,2,or 3 seconds and then
monitored for two weeks to determine the mortality and mark visibility
and clarity for each branding time.The total length of the chum and
sockeye salmon fry averaged 38 and 30 mm,respectively.
A branding time of one second provided the best brand clarity and lowest
mortality for both sockeye and chum salmon fry (Appendix Table C.1).As
branding time was increased,so also were mortality and distortion of
the mark.Another result of the longer branding times was a permanent
bending oflthe body at the point where the brand was applied.This was
not observed in the one-second branding time group.The amount of time
required for the brand to darken and become easily visible was five to
seven days for all groups.
Appendix Table C.1.Mortality and brand clarity over a two week period
for chum and sockeye salmon fry cold branded for
three branding durations,1985.
Branding Morta 1ity Brand Clarity
Durat ion
(seconds)Chum Sockeye Chum Sockeye
0 0 0
1 0 1 Excellent Excell ent
2 1 5 Slight Slight
Distortion Distortion
3 11 17 Highly Highly
Distorted Distorted
C-2
Cold branding can provide an alternative technique for marking small
chum and sockeye salmon fry when a long-term mark is required and may be
a more cost-effective technique than coded wire tagging.The cost
savings are realized in that the cold-branding equipment is less
expensive to obtain and requires less maintenance.Also,two people can
brand at the same time on a single branding machine while only one
person at a time can operate the coded wire tagger.However,the second
person is still required for coded wire tagging to clip the adipose fin
of the fish to be tagged to provide a visual indicator to the presence
or absence of a coded wire tag.Cold brands are visible on the fish and
require no additional marks.With the same number of people involved in
both tagging techniques,it may be possible to mark twice as many fish
during the same time period using cold branding.
During recovery efforts,coded wire tagged fish must be passed through a
tag detector to veri fy the presence of a tag.The fi sh must then be
sacrificed to determine the tag release information from the code on the
wire tag.With a cold-branded fish,the mark is easily observed
visually and does .not require sacrificing the fish.
The five to seven day period required for the mark to become visible on
a fish after cold branding may limit the usefulness of this technique in
some marking programs.However,if retaining the fish is not possible
and if recapture of these fish may occur before the mark becomes
visible,the addition of a second mark could be useful.Dye immersion
staining with Bismark Brown dye has been found effective in providing
short-term marks for chum and sockeye salmon fry (Roth et al.1984).
Dye marking of cold-branded fish prior to release would allow the visual
identification of a marked fish prior to the cold brand becoming readily
visible.
It is presently not known how long the cold-brand mark will stay visible
on chum and sockeye salmon fry.Branded chum fry were collected up to
three weeks after branding and the marks were still clearly visible.
Also,chinook and coho salmon juveniles with distinct brands have been
collected in the Susitna River over one year after they were released.
Although the short brand durati on worked we 11 for sma 11 fi sh in thi s
experiment,futher studies should be conducted before applying these
techniques in other programs.
C-3
-
-
,jIIJI?'l,
-
-
APPENDIX D
Flathorn Station Juvenile Salmon Catch Data,1985
0-1
The catch data for both banks of the Susitna river at Flathorn Station
were combi ned when an overl ay of the i ndi vi dual catch curves for each
bank trap indicated there was a close similarity between the beginning
and end points of the juvenile salmon outmigration and the slopes of the
cumulative catch.However,Flathorn Station is only four miles
downstream from the confluence of the Susitna and Yentna rivers.This
proximity may be reflected by statistically different within-season
peaks in timing,and in age class and species composition.In the case
of age 1+chinook for example,an outmigration peak was detected by the
west bank trap on June 6 while a corresponding peak was not detected by
the east bank trap (Appendix Fig.E.2).This peak in the catch data may
indicate that a pul se of age 1+chinook outmigrated from the Yentna
River and was subsequently detected by the west bank trap.If this
interpretation of the data is valid,the bank migration of chinook
salmon juveniles produced in the Yentna River may occur as far
downstream as Flathorn Station.Turbity and temperature data were
recorded at each of the Flathorn traps to evaluate their relationship to
the catch (Appendix A).
Roth et al.(1984)statistically impl ied that CPUE 's were different
between the two bank traps at Talkeetna Station in 1983.Although
differences between banks may exist at both Talkeetna and Flathorn
stations,the factors affecting the CPUE's at each station are probably
different.Unl ike Flathorn Station,the Susitna River at Talkeetna
Station does not have a major tributary in close upstream proximity and
therefore is not considered to have an immediate,discernable cause for
a major dissimilarity in the behavior of juvenile salmon between banks.
0-2
FLATHORN STATION CHINOOK 0+
TRAP 1 1985
:3 :I:
U
~
<t
2 u
4 Cl:
!oJ
Cl.
SEP
:50
70
100 ....-----------,--------------:::::;;;;;;;;;;;;;--f-
:.~
~5 ~
:I:
20
10
~60z
!oJ
U 50
Cl:
!oJ
Q.04.0
DATE
Cl:
4 ~
7
SEP
FLATHORN STATION CHINOOK,0+
TRAP 2 1985
20
10
70 -
3,202·TOTAL SEASON CATCH
--%OF HIGHEST CPUE
90 _./.OF CUMULATIVE
CATCH
:50
80
100 ...,...---------'------,,---------:;,_-------,
~60
z
w
u ~O
Cl:w
Cl.04.0
DATE
Appendix Figure 0.1.Flathorn Station chinook salmon (age 0+)daily
and cumulative catch recorded for the west bank
(upper figure)and east bank (lower figure)
stationary outmigrant traps,1985.
0-3
FLATHORN STATION CHINOOK 1 +
TRAP 1 198:5
100
90
80
70
I-60
Z
lIJ
U SO
a::
lIJ
Q..40
30
20
\0
0
1,776'TOTAL SEASON CATCH
--%OF HIGHER CPUE
__%OF CUMULATIV~CATCH
8
7
6 0::
::l
o
5 :x:
a:
I lIJ
~4 Q..
i
[:~
OATE
FLATHORN STATION CHINOOK 1 +
TRAP 2 196:5
\00
90
~';
880
c::70 ::l
0
6 :x:I-60
1,465'TOTAL SEASON CATCHZ a:lIJ %OF HIGHEST CPUE lIJu:50 -%OF CUMULATIVE CATCH Q..0::
:x:lIJ
4Q..40
U
I-
et30u ~
220
~\10
a0
SEP
OATE
Appendix Figure 0.2.Flathorn Station chinook salmon (age 1+)daily
and cumul ative catch recorded for the west bank
(upper figure)and east bank (lower figure)
stationary outmigrant traps,1985.-.
0-4
IX:
UJ
Q..
2 :I:
U
t-«
u
4
IX:
:Jo
3 :I:
6
7
690"TOTAL SEASON CATCH
%OF HIGHEST CPUE
-%OF CUMULATIVE CATCH
JUNEMA,
20
10
.:50
70
80
90
100 ..,-----------------7"i,.------,.::71
FLATHORN STATION COHO 0+
TRAP 1 1lii185
100
90
1,066"TOTAL SEASON CATCH
"I.OF HIGHER CPUE
-./.OF CUMULATIVE CATCH
80
70
t-eoz
I.LI
U SO
IX:
I.LI
Q..40
.:50
20
10
a
MA,JUNE
DATE
FLATHORN STATION COHO 0+
TRAP 2 1lii1!55
t-60
Z
I.LI
U SOa::
I.LI
Q..40
-~
...,
I
DATE
Appendix Figure 0.3.Fl athoro Station coho sal mon (age 0+)daily andcumulatlvecatchrecordedforthewestbank
(upper figure)and east bank (lower figure)
stationary outmigrant traps,1985.
D-5
FLATHORN STATION COHO 1+&2+
TRAP 1 1985 ~,
100 -r-------r------------
QATE -
0.2
a::
1.0 g
:c:
1.2
0.8 ~
a..
1.4
l-
IrO.6 @
r <
(,)
0.4
330'TOTAL SEASON CATCH
~.OF HIGHER CPUE
-%OF CUMULATIVE CATCH
JUNE
o ""*"tiTrrTlTlTmrnmm1TTTlTTTlTJTTTTmrrmm1TTTl-rtfnTlTlTptrrrfrrrmmmmTTinmrrrm-mrn~mm"lt-0.°
30
10
70
20
90
so
....60z
UJ
(,)50
a::
Io.l
a..40
FLATHORN STATION COHO 1 +&2+
TRAP 2 1985
100 .-------.----------------------:::~1.8
90
80
0.6 -
1.4
a::
1.2 :::lo
J:
1.6
0.4
0.2
r1.0 ~
a..
0.8 J:
u....<
(,)
277 •TOTAL SEASON CATCH
%OF HIGHER CPUE
-'Y.OF CUMULATIVE CATCH
70
10
20
30
50
60
40
....
Z
Io.l
(,)
a::
Io.l
CL
DATE
Appendix Figure 0.4.Flathorn Station coho salmon (age 1+and 2+)
daily and cumulative catch recorded for the west
bank (upper figure)and east bank (lower figure)
stationary outmigrant traps,1985.
0-6
FLATHORN STATION SOCKEYE 0+
TRAP 1 Hl8S100..,--..---~_=:::;:::;:;:;;;;;;;;;;;;i-...,
3 xu
~«
2 u
II::
4 w
Go
6
II::
:)
5 0x
7
3,544'TOTAL SEASON CATCH
%OF HIGHER CPUE
_%OF CUMULATIVE CATCH
JULY
20
:30
10
70
90
80
o "*T1'TTTl'1ITTTTTTTTlTmm1TTlTTITTJ1ITTTTTTmTmrnrmnmrrrrTJT1lTTTTmrnmmmrrmmrrpn-il'hTmmITTTTTn+-0
~60z
ILl
U 50
II::
ILl
Go 40
()A,fE
FLATHORN STATION SOCKEYE 0+
TRAP 2 1985
100 T---------I------=::;:;;;;;;;;;;;;;;=;;==-I
II::
:)
ox
II::
ILl
Go
2 G
~«u
4
5
1,509'TOTAL SEASON CATCH
%OF HIGHEST CPUE
_%OF CUMULATIVE CATCH
JULYJUNE
70
.30
90
10
20
80
o -t1t1TJTT11TlllTITTlITTTT1T1Tl1TITTlTJT11nmnmmnnmnmT1JTTlJTITTTlTTTTlTTlTTTTTri'trT'I'fJTmTrmrtTffnnmt-0
~60
z
ILl
U 50
II::
W
Go 40.....
C....TE
Appendix Figure 0.5.Flathorn Station sockeye salmon (age 0+)daily
and cumul ative catch recorded for the west bank
(upper figure)and east bank (lower figure)
stationary outmigrant traps,1985.
0-7
-
FLATHORN STATION SOCKEYE 1 +
TRAP 1 1985
:I:
U
~
<t
U
:I:
U
~
oct
U
1.0
1.5 a:
ILl
a.
0.5
2.0
2
3 a:
w
a.
4 a:
::I
o
:I:
416·TOTAL SEASON CATCH
%OF HIGHEST CPUE
_"I.OF CUMULATIVE CATCH
758·TOTAL SEASON CATCH
-%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
5
JULY
0
JULY AUG SEP ~
DATe:
FLATHORN STATION SOCKEYE 1+
TRAP 2 19S:S
2.5
-Ml~mmTTmmmlTTTTTT11Tj1rrrrrTmmmmiThrmrnmprmrnmmTmTmmTlT1'Trprnrrm:':~mmn-0.0
AUG SEP
100
90
80
70
~60
Z
W
u 50
II:
W
Cl..40
30
20
10
0
100
gO
SO
70
~eoz
w
u ~o
II:
W
Cl..40
30
20
10
0
DATE
Appendix Figure D.6.Flathorn Station sockeye salmon (age 1+)daily
and cumulative catch recorded for the west bank
(upper figure)and "east bank (lower figure)
stationary outmigrant traps,1985.
0-8
FLATHORN STATION CHUM FRY
TRAP 1 1965
100 ..,.----n---------==.....--------------....,
30
SEPAUG
7,488'TOTAL SEASON CATCH
%OF HIGHER CPUE
_"I.OF CUMULATIVE CATCH
10
30
20
70
O-fmTfTTTTTTTTlmm'lTTlTTTm"lTTlT]rmnnmmTTiTtriiilTmiTlTTf'lTTlTTTm"rmnmmTllTTTTTTJ"mmmmmmmrrl-O
90
80
I-60
Z
Ul
(,)50
ci:
Ul
a..40
FLATHORN STATION CHUM FRY
TRAP 2 1ge5
100 ..,--------,r----:....--------------...,
a::
w
a.
J:
(,)
I-
et
(,)
15
a::
:::lo
10 J:
5
SEPAUG
3,791'TOTAL SEASON CATCH
"I.OF HIGHER CPUE
-"I.OF CUMULATIVE CATCH
DATE
JUNEMA
10
70
20
30
80
o -+mTjTlTTTTTTlTTTT1rmn:rlTTllTllTpnnmm:TmTmTT'lTTTl'irTm'!1liTlTImmrrmmmmnTITJTImTTTTTrmnmmn-O
30
I-60
Z
w .50(,)
a::
~40
,..,.
-
Appendix Figure 0.7.Flathorn Station chum salmon fry daily and
cumulative catch recorded for the west bank
(upper figure\and east bank (lower figure)
stationary outmigrant trapsl 1985.
0-9
FLATHORN STATION PINK FRY
TRAP 1 1985
2
a::
I&J
Cl.
::r:4 0
l-
e:(
o
10
SEPAUG
2,114 •TOTAL SEASON CATCH
--%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
o -t'fuTJT1TmmTTTTTmmlTTTTT1TTTJlmmnnTmm~TTrT'nmynTTTTTmmmmTTTTTmmTJTT1'mmrmn'TTTTTrrt-0
90
100,------,---=__----------------1
80
70
10
20
I-60
z
I&J
<J 50
0::'
I&J
Cl.40
DATE
FLATHORN ,STATION PINK FRY
TRAP·2 1985
1 00 I---......,..-·..--::::;;;;;;_---------------~
90
80
12
2,237.TOTAL SEASON CATCH
%OF HIGHER CPUE
-%OF CUMULATIVE CATCH
6
70
I-
Z 60
I&J
o 50
0::
I&J
Q.40
30
20
10
JULY AuG SEP
to
0::
~o
B ::r:
0::
IJJ
Cl.
::r:o
l-
e:(
4 0
2
DATE
Appendix Figure 0.8.Flathorn Station pink salmon fry daily and
cumulative catch recorded for the west bank
(upper figure)and east bank (lower figure)
stationary outmigrant traps~1985.
0-10
Appendix Table 0.1.flathorn Station chinook salmon (age 0+)daily and cumulative catch
recorded for the west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps,1985.
TRAP 1 TRAP 2
.,...------------------------
Oil..HOlIn Dai1 h CutulatiYI Daily PtrClllt Houri nail h Cutullti YI Daily Ptrtent
Filhtd CIte Citcb CPUE CUluhtivt Fhntd Cite Cltch CPUE ClIIIlIAtivI--------------------------_.._---------------------------------------------------850527 7.83 0 0 0.00 0 0
B50528 13.50 2 2 0.15 0.09 12.75 0 0 0.00 0.00
850529 15.75 0 2 0.00 0.09 23.17 0 0 0.00 0.00
B50530 15.4'2 0 2 0.00 0.09 22.75 0 0 0.00 0.00
850531 12.17 0 2 0.00 0.09 12.08 0 0 0.00 0.00
~850601 13.42 0 2
0.00 0.09 12.83 0 0 0.00 0.00
850602 11.50 0 2 0.00 0.09 11.83 0 0 0.00 0.00
850603 14.33 0 2 0.00 0.09 14.58 0 0 0.00 0.00
850604 11.83 0 2 0.00 0.09 24.08 0 0 0.00 0.00-B50605 14.17 0 2 0.00 0.09 IB.58 1 1 0.05 0.03
B50606 13.50 7 ".
0.52 0.42 11.75 2 3 0.17 0.09
B50607 24.33 6 15 0.25 0.70 13.50 0 3 0.00 0.09
850608 24.42 11 26 0.45 1.22 24.00 14 17 0.58 0.53
B50609 23.58 8 34 0.34 1.59 23.00 2 19 0.09 0.59-850610 14.75 9 43 0.61 2.01 11.25 0 19 0.00 0.59
850611 14.58 3 46 0.21 ?15 12.33 0 19 0.00 0.59
850612 12.25 0 46 0.00 2.15 11.83 0 19 0.00 0.59
850613 11.33 2 48 0.18 2.24 11.50 0 19 0.00 0.59
""'"850614 10.25 0 4B 0.00 2.24 10.83 0 19 0.00 0.59
850615 12.25 1 49 O.OB 2.29 12.67 0 19 0.00 0.59
850616 13.17 0 49 0.00 2.29 12.42 1 20 0.08 0.62
850617 11.92 3 52 0.25 2.43 11.25 1 21 0.09 0.611
.-B50618 12.25 1 53 O.OB 2.48 11.75 2 23 0.17 0.72
B50619 7.92 0 53 O~OO 2.4B 13.08 0 23 0.00 0.72
B50620 3.00 0 53 0.00 2.48 12.50 1 24 0.08 0.75
850621 11.50 0 53 0.00 2.4B 22.58 0 24 0.00 0.75
B50622 12.17 0 53 0.00 2.48 7.75 0 24 0.00 0.75
850623 12.33 1 54 0.08 2.52 11.83 0 24 0.00 0.75
850624 9.50 0 54 0.00 2.52 11.92 1 25 0.08 0.7B
850b25 12.67 3 57 0.24 2.66 12.17 2 27 0.16 0.B4
850626 12.50 1 5B 0.08 2.71 11.83 2 29 0.17 0.91
850627 12.25 21 79 1.71 3.69 13.17 11 40 0.8-4 1.25
B50628 12.33 59 138 4.78 6.45 11.83 23 63 1.94 1.97
B50629 15.92 58 196 3.64 9.16 17.92 51 114 2.85 3.56
850630 20.42 114 310 5.58 14.49 17.33 55 169 3.17 5.28
850701 5.92 61 371 10.31 17.34 9.58 53 222 5.53 6.93
850702 11.5B 41 412 3.54 19.26 8.17 13 235 1.59 7.3-4
850703 11.75 22 434 1.B7 20.29 11.67 10 245 0.80 7.65
850704 12.09 29 463 2.40 21.65 11.33 26 271 2.29 8.40
B50705 11.83 63 526 5.32 24.59 12.83 6B 339 5.30 10.59
850706 16.00 104 630 6.50 29.45 16.43 116 455 7.00 14.21
850707 19.75 91 721 4.61 33.71 lB.58 139 594 7.4B lB.55
B50708 12.00 2B 749 2.33 35.02 12.42 69 663 5.50 20.71
850709 12.17 48 797 3.95 37.26 11.42 60 723 5.26 22.58
~B50710 12.25 32 829 2.61 38.76 12.00 65 7BB 5.42 24.61
B50711 12.25 50 879 4.08 41.09 11.75 58 B46 4.94 26.42
850712 11.83 26 905 2.20 42.31 11.83 37 BB3 3.13 27.sa
B50713 11.92 30 935 2.52 43.71 12.00 59 942 4.92 29.42
850714 12.00 27 962 2.25 44.97 11.75 57 999 4.85 31.20
,.-850715 11.92 20 982 1.08 45.91 12.08 35 1034 2.90 32.29
850716 15.00 25 1007 1.67 47.08 14.75 72 1106 4.88 34.54
B50717 21.00 47 1054 2.24 49.28 20.58 81 1187 3.94 37.07
B50718 12.42 33 1087 2.66 50.82 12.33 112 1299 9.0B 40.57
~850719 12.00 36 1123 3.00 52.50 12.33 109 1408 8.84 43.97
850720 12.00 28 1151 2.33 53.Bl 11.83 54 1462 4.56 45.&6
B50721 11.92 16 11&7 1.34 54.56 11.B3 41 1503 3.46 4b.94
850722 11.92 19 1186 1.59 55.45 11.92 41 1544 3.44 48.22
850723 18.00 &3 1249 3.50 58.39 16.B3 7S 1622 4.63 50.66
850724 18.17 47 1296 2.59 60.59 19.08 114 1736 5.97 54.22
850725 12.58 34 1330 2.70 62.1S 12.42 73 1909 5.BB 5b.50
0-11
.....""',,--
~l
Appendix Table D.'.Continued.
~
TRAP 1 TRAP 2
------------------------------------------------
Dit.Houri Dlil~CUlulltiv.Dlily Perc.nt HOUri Dili1~Culul ilti ve Daily Percent ~"J
fli Ih!d Cite .Cltch CPUE CUluhtivf Filhed Catc Catch CPUE CUluliltive
----------------------------------------------------------------------
850726 12.83 37 1367 2.88 63.91 13.58 72 1881 5.3l.l 58.74
850727 11.92 61 1428 5.12 66.76 11.92 84 19115 7.05 61.37
850728 12.17 43 1471 3.53 68.77 11.92 45 2010 3.78 62.77
850729 12.33 27 1498 2.19 70.03 11.92 48 2058 4.03 114.27
850730 12.33 22 1520 1.78 71.Oil 12.17 49 2107 4.03 65.BO
850131 11.92 18 1538 1.51 71.90 11.50 49 2156 4.26 117.33
850801 11.92 15 1~53 1.26 72.00 12.00 24 2180 2.00 6B.08 ~~
850802 12.08 11 1564 0.91 73.12 12.08 33 2213 2.n 119.11
850803 12.00 12 1576 1.00 n.68 12.25 44 2257 3.59 70.49
850904 12.33 34 1610 2.76 75.27 12.00 24 2291 2.00 71.24
850905 12.42 11 1621 .0.89 75.78 12.00 23 2304 1.92 71.911
850806 12.92 8 .1629 0.62 76.16 12.58 28 2332 2.23 72.83 ..,
850807 11.B3 17 1646 1.44 76.95 11.92 25 2357 2.10 73.61
850808 12.17 15 1061 1.23 77.65 5.75 26 2383 4.52 74.42
850809 11.92 13 1674 1.09 78.26 11.67 32 2415 2.74 75.42
850810 17.33 11 lOSS 0.63 78.78 16.33 41 2456 2.51 76.70
850811 19.00 9 1694 0.47 79.20 21.00 77 2533 3.67 79.11
850812 12.75 12 1706 0.94 79.76 12.08 79 2612 6.54 81.57
850813 12.08 46 1752 3.81 81.91 12.08 104 2716 8.61 84.82
850814 11.83 52 1804 4.39 94.34 12.08 67 2783 5.54 86.91 ~
850815 15.83 37 1841 2.34 86.07 16.00 112 2B95 7.00 90.41
850816 20.25 26 1867 1.28 87.28 19.50 76 2971 3.90 92.79
850817 11.83 48 1915 4.00 89.53 11.92 52 3023 4.:so 94.41
850818 11.83 27 1942 2.28 90.79 11.83 58 3081 4.90 96.22
850819 12.67 31 L973 2.45 92.24 12.17 33 3114 2.71 97.25 ~
850820 12.08 21 1~4 1.74 93.22 12.00 27 3141 2.25 98.09
85OB21 12.83 15 2009 1.17 93.92 12.50 22 3163 1.76 98.78
850822 12.42 20 2029 1.61 94.86 12.17 22 3185 1.81 99.47
850823 12.33 9 2038 0.73 95.28 12.50 10 3195 0.80 99.78 ~
850824 15.25 8 2046 0.52 95.65 12.25 2 3197 0.16 99.84
8508'25 20.42 29 2075 1.42 97.01 12.50 0 3197 0.00 99.84
850826 12.33 8 2083 0.65 97.38 12.50 2 3199 0.16 99.91
B5OB27 12.50 5 2088 0.40 97.62 12.00 0 3199 0.00 99.91
85082B 12.08 5 2093 0.41 97.85 12.25 1 3200 0.08 99.94 ~
850829 12.33 3 2096 0.24 97.99 13.75 1 3201 0.07 99.97
850830 12.50 4 2100 0.32 98.18 12.17 0 3201 0.00 99.97
850831 15.83 3 2103 0.19 98.32 12.33 0 3201 0.00 99.97
850901 9.75 4 2107 0.41 98.50 9.83 0 3201 0.00 99.97 ~
850902 0 2107 ----98.50 12.17 0 3201 0.00 99.97
850903 8.75 4 2111 0.46 98.83 12.67 0 3201 0.00 99.97
850904 13.83 3 2114 0.22 99.02 13.67 1 3202 0.07 100.00
850905 12.08 0 2114 0.00 99.02 12.08 0 3202 0.00 100.00
850906 13.00 0 2114 0.00 99.02 13.58 0 3202 0.00 100.00
850907 12.33 0 2114 0.00 99.02 12.25 0 3202 0.00 100.00
850908 12.58 3 2117 0.24 99.11 11.33 0 3202 0.00 100.00
850909 12.00 1 2118 0.08 99.16 12.17 0 3202 0.00 100.00
850910 12.25 3 2121 0.24 99.30 12.50 0 3202 0.00 100.00
850911 12.67 1 2122 0.08 99.35 12.67 0 3202 0.00 100.00
850912 12.00 1 2123 0.08 99.39 L2.00 0 3202 0.00 100.00
850913 12.00 2 2125 0.17 99.49 11.67 0 3202 0.00 100.00
850914 11.83 1 2126 0.08 99.53 0 3202 100.00 ~
850915 3.50 0 212&0.00 99.53 12.b7 0 3202 0.00 100.00
85091b 12.00 1 2127 0.08 99.58 12.00 0 3202 0.00 100.00
850917 12.08 4 2131 0.33 99.77 12.08 0 3202 0.00 100.00
B50918 12.42 0 2131 0.00 99.77 12.b7 0 3202 0.00 100.00
B50919 12.33 1 2132 0.08 99.B1 12.33 0 3202 0.00 100.00
850920 12.00 0 2132 0.00 99.81 11.08 0 3202 0.00 100.00
850921 12.42 0 2132 0.00 99.81 12.25 0 3202 0.00 100.00
850922 12.33 0 2132 0.00 99.81 12.00 0 3202 0.00 100.00
850923 12.08 4 2136 0.33 100.00 12.17 0 3202 0.00 100.00 -
0-12
Appendix Table 0.2.Flathorn Station chinook salmon (age 1+)daily and cumulative catch
recorded for the west bank (trap 1)and east bank (t rap 2)
~i/l stationary outmigrant traps,1985.
TRAP 1 TRAP 2
--------------------~---------------------------
DAb Houn Dai1~Cuaulllive Daily Percent HOUfl Dai1~CUlulati VI Daily Percent
Fi shed Cdc Cilch CPUE CUlulltivl Filhrd Cite Catch CPUE CUlulative
------------------------------------------------------------------------------------------------------
B50527 7.83 10 10 1.29 0.56 0
850529 13.50 61 71 4.52 4.00 12.75 4 4 0.31 0.27
950529 15.75 37 108 2.35 6.08 23.17 14 18 0.60 1.23
850530 15.42 30 138 1.95 7.77 22.75 12 30 0.53 2.05
850531 12.17 38 176 3.12 9.91 12.08 14 44 1.16 3.00
850601 13.42 29 205 2.16 11.54 12.83 7 51 0.55 3.48
850602 11.50 66 271 5.74 15.26 11.83 15 66 1.27 4.51
950603 14.33 43 314 3.00 17.68 14.58 9 75 0.62 5.12
850604 11.83 49 303 4.14 20.44 24.08 9 84 0.37 5.73
~850605 14.17 45 409 3.19 22.97 18.59 17 101 0.91 &.89
850606 13.50 167 575 12.37 32.38 11.75 14 115 1.19 1.85
850607 24.33 119 694 4.89 39.08 13.50 11 126 0.81 8.60
850608 24.42 31 725 1.27 40.82 24.00 18 144 0.75 9.83
850609 23.59 29 154 1.23 42.45 23.00 14 159 0.61 10.78
p~850610 14.75 42 79&2.95 44.82 11.25 2 160 0.18 10.92
850611 14.58 6 802 0.41 45.16 12.33 9 169 0.73 11.54
850612 12.25 6 B08 0.49 45.50 11.83 3 172 0.25 11.14
850613 11.33 11 919 0.97 46.11 11.50 6 178 0.52 12.15
""'..850614.10.25 33 852 3.22 47.97 10.93 9 187 0.83 12.76
850615 12.25 18 870 1.41 49.99 12.67 9 1911 0.11 13.38
850616 13.17 9 879 0.08 49.49 12.42 3 199 0.24 13.58
850617 11.92 31 910 2.60 51.24 11.25 2 201 0.18 13.72
850618 12.25 3 913 0.24 51.41 11.75 6 207 0.51 14.13
850619 7.92 2 915 0.25 51.52 13.09 ·2 209 0.15 14.27
850620 3.00 0 915 0.00 51.52 12.50 1 210 0.08 14.33
850621 11.50 6 921 0.52 51.86 22.59 10 220 O.~15.02
850622 12.17 4 925 0.33 52.08 7.75 0 220 0.00 15.02
850623 12.33 6 931 0.49 52.42 11.83 0 220 0.00 15.02
850624 9.50 55 996 5.79 55.52 11.92 23 243 1.93 111.59
850625 12.67 34 1020 2.68 57.43 12.17 55 298 4.52 20.34
850626 12.50 64 1094 5.12 61.04 11.83 29 327 2.45 22.32
!~850627 12.25 115 1199 9.39 67.51 13.17 132 459 10.03 31.33
85Ob28 12.33 71 1270 5.76 71.51 11.83 72 531 6.08 36.25
850629 15.92 58 1329 3.M 74.77 11.92 186 717 10.3B 48.94
850630 20.42 72 1400 3.53 78.83 17.33 168 885 9.69 60.41
850701 5.92 27 1421 4.56 80.35 9.58 95 980 9.91 66.89
850702 11.58 III 1443 1.38 81.25 8.11 28 1008 3.43 68.81
B50703 11.75 48 1491 4.09 83.95 Il.67 24 1032 2.Ob 70.44
850704 12.08 51 1542 4.22 96.B2 11.33 45 1077 3.97 73.52
850705 11.83 36 157B 3.04 88.85 12.83 35 1112 2.73 75.90-950706 16.00 27 1605 1.69 90.37 Ib.43 25 1137 1.52 77.61
950707 19.75 14 1619 0.71 91.16 18.sa 19 1156 1.02 78.91
850708 12.00 22 1641 1.B3 92.40 12.42 17 1173 1.37 80.07
B50709 12.17 15 165b 1.23 93.24 11.42 17 1190 1.49 81.23
850710 12.25 11 1607 0.90 93.86 12.00 8 1198 0.67 81.77
B50711 12.25 4 1671 0.33 94.09 11.75 7 1205 0.60 82.25
850712 11.93 2 1673 0.17 94.20 11.83 B 1213 0.08 82.80
850713 11.92 6 1679 0.50 94.54 12.00 14 1227 1.17 83.75
850714 12.00 6 16B5 0.50 94.BB 11.75 20 1247 1.70 B5.12
~B50715 11.92 3 1688 0.25 95.05 12.08 12 1259 0.99 85.94
850716 15.00 3 1691 0.20 95.21 14.75 16 1275 1.08 87.03
850717 21.00 15 1706 0.71 96.06 20.59 8 12B3 0.39 87.58
85071B 12.42 3 1709 0.24 96.23 12.33 20 1303 1.62 88.94
:'lli\lIiIAi 850719 12.00 1 1710 O.OB 96.28 12.33 12 1315 0.97 89.76
850720 12.00 4 1714 0.33 96.51 11.B3 19 1334 1.61 91.06
850721 11.92 3 1717 0.25 96.69 11.83 7 1341 0.59 91.54
850722 11.92 0 1717 0.00 96.68 11.92 1 1342 0.08 91.60
B50723 18.00 1 1718 O.Ob 96.73 16.83 5 1347 0.30 91.95
850724 18.17 0 171B 0.00 9b.73 19.08 2 1349 0.10 92.08
850725 12.58 4 1722 0.32 96.96 12.42 6 1355 0.48 92.49
-0-13
~1
Appendix Table 0.2.Continued.
~,
TRAP 1 TRAP 2
------------------------------------------------
Oltt Houri Diil~CUlUlltiv!DAily Percent Houri Dlil~Cululiti vt Daily Percent ~
Filhtd Cite Cltch CPUE Cu..I1lAti Vt Filhtd Cltc Cltch CPUE CUluhtivr
--------------------------------------------------------------
850726 12.83 2 1724 0.16 97.07 13.58 6 1361 0.44 92.90
850727 11.92 1 1725 0.08 97.13 11.92 2 1363 0.17 93.04
850728 12.17 3 1728 0.25 97.30 11.92 I 13b4 0.08 93.11 ~
850729 12.33 2 1730 ·0.16 97.41 11.92 4 1308 0.34 93.38
850730 12.33 3 1733 0.24 97.58 12.17 5 1373 0.41 93.72
850731 11.92 3 1736 0.25 97.75 11.50 5 1378 0.43 94.06
850801 11.92 4 1140 0.34 97.97 12.00 6 1384 0.50 94.47 I'Wi"
850802 12.08 0 1740 0.00 97.97 12.08 5 1389 0.41 94.81
850803 12.00 0 1740 0.00 97.97 12.25 3 1392 0.24 95.02
850804 12.33 4 1744 0.32 98.20 12.00 0 1392 0.00 95.02
850805 12.42 1 1745 0.08 98.25 12.00 3 1395 0.25 95.22
850806-12.92 1 1746 0.08 98.31 12.58 3 1398 0.24 95.43 ~)
850807 11.83 3 1749 .0.25 98.48 .11.92 I 1399 0.08 95.49
850808 12.17 2 1751 0.16 98.59 5.75 6 1405 1.04 95.90
850809 11.92 4 1755 0.34 98.82 11.67 IS 1420 1.29 96.93
850810 17.33 1 1756 0.06 98.87 16.33 12 1432 0.73 97.75 ~I
850811 19.00 0 1756 0.00 98.87 21.00 4 1436 0.19 98.02
850812 .12.75 3 1759 0.24 99.04 12.08 5 1441 0.41 98.36
850813 12.08 2 1761 0.17 99.16 12.08 11 1452 0.91 99.11
850814 11.83 3 1764 0.25 99.32 12.08 2 1454 0.17 99.25
850815 15.83 1 1765 0.06 99.38 16.00 4 14SB 0.25 99.52
850816 20.25 1 1766 0.05 99.44 19.50 3 1461 0.15 99.73
850817 11.83 0 1766 0.00 99.44 11.92 2 1463 o.n 99.86
850818 11.83 0 1766 0.00 99.44 11.83 0 1463 0.00 99.80
850819 12.67 0 1766 0.00 99.44 12.17 0 1403 0.00 99.86 ~;
85OS20 12.08 0 1766 0.00 99.44 12.00 1 1464 0.08 99.93
850821 12.83 0 1766 0.00 99.44 12.50 0 1464 0.00 99.93
B50822 12.42 1 1767 0.08 99.49 12.17 0 1464 0.00 99.93
850823 12.33 0 1767 0.00 99.49 12.50 1 1465 0.09 100.00 ~
850824 15.25 0 1767 0.00 99.49 12.25 0 1465 0.00 100.00
850825 20.42 I 1768 0.05 99.55 12.50 0 1465 0.00 100.00
B50826 12.33 0 1769 0.00 99.55 12.50 0 1465 0.00 100.00
850827 12.50 0 1768 0.00 99.55 12.00 0 1465 0.00 100.00
85092B 12.08 1 1769 0.08 99.61 12.25 0 14bS 0.00 100.00 ~:l
850829 12.33 0 1769 0.00 99.61 13.75 0 1465 0.00 100.00
850830 12.50 0 1169 0.00 99.61 12.17 0 1465 0.00 100.00
850831 15.83 0 1769 0.00 99.61 12.33 0 1465 0.00 100.00
850901 9.75 0 1169 0.00 99.61 9.83 0 1465 0.00 100.00 ~'l
850902 0 1769 ---99.61 12.17 0 1465 0.00 100.00
850903 8.75 0 1769 0.00 99.61 12.67 0 1405 0.00 100.00
850904 13.83 0 1769 0.00 99.61 13.67 0 1465 0.00 100.00
850905 12.08 0 1769 0.00 99.61 12.09 0 14bS 0.00 100.00
850906 13.00 1 1770 0.08 99.60 13.58 0 1465 0.00 100.00
850907 12.33 0 1770 0.00 99.Mi 12.25 .0 14b5 0.00 100.00
850908 12.58 0 1770 0.00 99.Mi 11.33 0 1465 0.00 100.00
850909 12.00 0 1770 0.00 99.66 12.17 0 1465 0.00 100.00
850910 12.25 0 1770 0.00 99.66 12.50 0 1465 0.00 100.00 """
850911 12.67 0 1770 0.00 99.66 12.67 0 14b5 0.00 100.00
850912 12.00 0 1770 0.00 99.60 12.00 0 1465 0.00 100.00
850913 12.00 I Inl 0.08 99.72 11.67 0 1465 0.00 100.00
850914 1l.93 0 1771 0.00 99.72 0 1465 100.00 ~
850915 3.50 0 177J 0.00 99.72 12.67 0 1465 0.00 100.00
850916 12.00 2 1773 0.17 99.83 12.00 0 14b5 0.00 100.00
850917 12.08 2 1775 0.17 99.94 12.08 0 1465 0.00 100.00
850918 12.42 0 1775 0.00 99.94 12.67 0 1465 0.00 100.00
850919 12.33 1 1716 0.08 100.00 12.33 0 1465 0.00 100.00 ~~,
850920 12.00 0 1776 0.00 100.00 11.08 0 1465 0.00 100.00
850921 12.42 0 177b 0.00 100.00 12.25 0 1465 0.00 100.00
850922 12.33 0 1776 0.00 100.00 12.00 0 1465 0.00 100.00
850923 12.08 0 1776 0.00 100.00 12.11 0 1465 0.00 100.00
0-14
,-
Appendix Table 0.3.Fl athorn Station coho salmon (age 0+)daily and cumul ati ve catch
,....recorded for the west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps.1985.
TRAP 1 TRAP 2----------------------------------
Dati Houri Dlil~eulUhiivl Dlily PtrCtRt HOUri Dlil h CUlul Iii VI Dlily Percfnt
Fhhfd Cite Cltch CPUE Cuatlltivf Filh'd Cite Cltch CPUE CUlulltiv'------------------------------------------------
i""'"850527 7.83 0 0 0.00 0.00 0
I'850528 13.50 0 0 0.00 0.00 12.75 0 0 0.00 0.00
850529 15.75 0 0 0.00 0.00 23.17 0 0 0.00 0.00
850530 15.42 0 0 0.00 0.00 22.75 0 0 0.00 0.00
850531 12.17 0 0 0.00 0.00 12.08 0 0 0.00 0.00
850601 13.42 0 0 0.00 0.00 12.83 0 0 0.00 0.00
850602 11.50 0 0 0.00 0.00 11.83 0 0 0.00 0.00
850603 14.33 4 4 0.28 0.38 14.58 0 0 0.00 0.00
850604 11.83 1 5 0.08 0.47 24.08 0 0 0.00 0.00
850605 14.17 2 7 0.14 0.66 18.58 0 0 0.00 0.00
850606 13.50 1 8 0.07 0.75 11.75 0 0 0.00 0.00
850607 24.33 0 8 0.00 0.75 13.50 0 0 0.00 0.00
850608 24.42 2 10 0.08 0.94 24.00 0 0 0.00 0.00
850609 23.58 2 12 0.08 1.13 23.00 0 .0 0.00 0.00
850610 14.75 0 12 0.00 1.13 11.25 0 0 0.00 0.00
850611 14.58 0 12 0.00 1.13 12.33 0 0 0.00 0.00
850612 12.25 0 12 0.00 1.13 11.83 0 0 0.00 0.00
850613 11.33 0 12 0.00 1.13 11.50 0 0 0.00 0.00
850614 10.25 0 12 0.00 1.13 10.83 0 0 0.00 0.00
850615 12.25 1 13 0.08 1.22 12.67 0 0 0.00 0.00
850616 13.17 1 14 0.08 1.31 12.42 0 0 0.00 0.00
850617 11.92 0 14 0.00 1.31 11.25 0 0 0.00 0.00
850618 12.25 0 14 .0.00 1.31 11.75 0 0 0.00 0.00
850619 7.92 0 14 0.00 1.31 13.08 0 0 0.00 0.00
850620 3.00 0 14 0.00 1.31 12.50 0 0 0.00 0.00
850621 11.50 0 14 0.00 1.31 22.58 1 1 0.04 0.14
850622 12.17 1 15 0.08 1.41 7.75 0 1 0.00 0.14
850623\12.33 0 15 0.00 1.41 11.83 0 1 0.00 0.14
850624 9.50 2 17 0.21 1.59 11.92 3 4 0.25 O.SS
850625 12.67 5 22 0.39 2.06 12.17 0 4 0.00 0.58
850626 12.50 1 23 0.08 2.16 11.83 0 4 0.00 0.58
850627 12.25 4 27 0.33 2.53 13.17 0 4 0.00 0.58
850628 12.33 9 36 0.73 3.38 11.83 0 4 0.00 0.58
850629 15.92 5 41 0.31 3.85 17.92 2 6 0.11 0.87
850630 20.42 13 54 0.64 5.07 17.33 2 8 0.12 1.16
850701 5.92 11 65 1.86 6.10 9.58 1 '1 0.10 1.30
850702 11.58 32 97 2.76 9.10 8.17 1 10 0.12 1.45
850703 11.75 25 122 2.13 11.44 11.67 0 10 0.00 1.45
850704 12.08 19 141 1.57 13.23 11.33 2 12 0.18 1.74
~850705 11.83 33 174 2.79 16.32 12.83 5 17 0.39 2.46
850706 16.00 46 220 2.BS 20.64 16.43 6 23 0.37 3.33
850707 19.75 41 261 2.09 24.48 18.59 7 30 0.38 4.35
850708 12.00 20 281 1.67 26.36 12.42 3 33 0.24 4.78
850709 12.17 16 297 1.32 27.86 11.42 4 37 0.35 5.30
850710 12.25 6 303 0.49 28.42 12.00 2 39 0.17 5.65
850711 12.25 16 319 1.31 29.92 11.75 4 43 0.34 6.23
850712 11.83 16 335 1.35 31.43 11.83 1 44 0.08 6.38
850713 11.92 10 345 0.84 32.36 12.00 2 46 0.17 6.67
850714 12.00 3 348 0.25 32.65 11.75 3 49 0.26 7.10
850715 11.92 5 353 0.42 33.11 12.08 0 49 0.00 7.10
850716 15.00 3 356 0.20 33.40 14.75 2 51 0.14 7.39
850717 21.00 8 364 0.38 34.15 20.58 3 54 0.15 7.83
850718 12.42 5 369 0.40 34.62 12.33 2 56 0.16 8.12
850719 12.00 9 378 0.75 35.46 12.33 1 57 0.08 8.26
850720 12.00 3 381 0.25 35.74 11.83 0 57 0.00 8.26
850721 11.92 11 392 0.92 36.77 11.83 0 57 0.00 8.26
850722 11.92 5 397 0.42 37.24 11.92 2 59 0.17 B.55
850723 18.00 2 399 0.11 37.43 16.83 5 64 0.30 9.28
B50724 18.17 6 405 0.33 37.941 19.09 5 69 0.26 10.00
850725 12.58 3 408 0.24 38.27 12.42 1 70 0.08 10.14
0-15
-
Appendix Table 0.3.Continued.
""'"
TRAP I TRAP 2
------------------------------------------------
Dih Houri Dail~CUlUlitive Dlily Ptrcut Houri Olil~CUlulltive O.i 1Y Prrclnt ~
Fi shed Cite Citch CPUE CUlullti ve Fi shed Cite Cltch CPUE CUluhtivt
_.----------_._------------------------------~---------------------------------
850726 12.93 5 413 0.39 38.74 13.58 I 11 0.07 10.29
850727 11.92 3 416 0.25 39.02 11.92 0 71 0.00 10.29
850728 12.17 6 422 0.49 39.59 11.92 5 76 0.42 11.01 -
850729 12.33 2 424 0.16 39.77 11.92 0 76 0.00 11.01
850730 12.33 1 425 0.09 39.87 12.17 0 76 0.00 11.01
850731 11.92 2 427 0.17 40.06 11.50 0 76 0.00 11.01
8S0801 11.92 0 427 0.00 40.06 12.00 1 77 O.OS 11.16
850802 12.08 2 429 0.17 40.24 12.08 0 77 0.00 11.16
850803 12.00 I 430 0.08 40.34 12.25 1 78 0.06 11.30
850804 12.33 6 436 0.49 40.90 12.00 0 78 0.00 11.30
8S0805 12.42 4 440 0.32 41.28 12.00 0 78 0.00 11.30 ~
85OB06 12.92 7 447 0.54 41.93 12.58 2 80 0.16 11.59
850807 11.83 1 448 0.08 42.03 11.92 0 BO 0.00 11.59
850809 12.17 1 449 0.08 42.12 5.75 0 BO 0.00 11.59
850809 11.92 4 453 0.34 42.50 11.67 1 Bl 0.09 11.74
850810 17.33 7 400 0.40 43.15 16.33 2 83 0.12 12.03
B50811 19.00 10 470 0.53 44.09 21.00 7 90 0.33 13.04
8SOS12 12.75 10 480 0.18 45.03 12.08 6 96 0.50 13.91
850813 12.08 136 616 11.26 57.79 12.06 SO 152 4.63 22.03
850814 11.83 88 704 7.44 66.04 12.08 52 204 4.30 29.57 ""'"
950815 15.83 65 769 4.11 72.14 16.00 85 299 5.31 41.88
850816 20.25 79 848 3.90 79.55 19.50 80 369 4.10 53.48
850817 11.83 21 869 1.17 Bl.52 11.'2 70 439 5.87 63.62
850818 11.83 25 894 2.11 83.86 I1.B3 39 478 3.30 69.28
850819 12.67 15 909 1.18 B5.27 12.17 14 492 1.15 71;30 ~
850820 12.08 13 922 1.08 86.49 12.00 18 510 1.50 73.91
850821 12.83 10 932 0.78 87.43 12.50 34 544 2.72 78.84
850822 12.42 22 954 1.77 89.49 12.17 27 571 2.22 82.75
850823 12.33 9 963 0.73 90.34 12.50 10 581 0.80 84.20
850824\15.25 5 968 0.33 90.81 12.25 4 585 0.33 84.78
850825 20.42 9 977 0;44 91.D5 12.50 3 588 0.24 B5.22
850826 12.33 7 984 0.57 92.31 12.50 3 591 0.24 85.65
850827 12.50 3 987 0.24 92.59 12.00 2 593 0.17 85.94 ~
95092B 12.08 2 999 0.17 92.78 12.25 0 593 0.00 95.94
BS0929 12.33 7 996 0.57 93.43 13.75 1 594 0.07 86.09
850830 12.50 2 998 0.16 93.62 12.17 2 596 0.16 8ll.3S
850831 15.83 1 999 0.06 93.71 12.33 1 597 0.08 86.52
950901 9.75 3 1002 0.31 94.00 9.83 5 602 0.51 97.25 ~
950902 0 1002 --94.00 12.17 0 602 0.00 87.25
850903 8.75 1 1003 0.11 94.09 12.67 0 ~2 0.00 87.25
850904 13.83 1 1004 0.07 94.19 13.67 0 602 0.00 87.25
850905 12.08 1 1005 0.08 94.28 12.08 0 602 0.00 87.25
850906 13.00 1 1006 0.08 94.37 13.58 1 ~3 0.07 87.39
850907 12.33 0 1006 0.00 94.31 12.25 3 606 0.24 97.83
850908 12.59 2 1008 0.16 94.50 11.33 6 612 0.53 88.70
850909 12.00 I 1009 0.08 94.65 12.17 2 614 0.16 88.99
850910 12.25 1 1010 0.08 94.75 12.50 1 615 0.08 89.13
850911 12.67 1 1011 0.08 94.84 12.67 1 616 0.08 89.28
850912 12.00 2 1013 0.17 95.03 12.00 3 619 0.25 89.11
850913 12.00 1 1014 0.08 95.12 11.61 9 62B 0.77 91.01
850914 11.83 12 1026 1.01 96.25 0 628 ---91.01 ~.
850915 3.50 1 1027 0.29 96.34 12.67 7 635 0.55 92.03
8509L6 12.00 6 1033 0.50 96.90 12.00 14 649 1.17 94.06
8S0917 12.08 3 1036 0.25 97.19 12.08 6 655 0.50 94.93
850918 12.42 2 1038 0.16 97.37 12.67 8 603 0.63 96.09
850919 12.33 13 1051 1.05 98.59 12.33 9 672 0.73 97.39
850920 12.00 1 1052 0.08 98.69 11.06 0 672 0.00 97.39
950921 12.42 4 1056 0.32 99.06 12.25 2 674 0.16 97.08
850922 12.33 1 1057 0.06 99.16 12.00 9 683 0.75 99.99
950923 12.08 9 1066 0.74 100.00 12.17 7 690 0.58 100.00 ~
0-16 -
Appendix Table 0.4.Flathorn Station coho salmon (age 1+and 2+)daily and cumulative
catch recorded for the west bank (trap 1)and east bank (trap 2)
,-stationary outmigrant traps,1985.
TRAP 1 TRAP 2
~-------------------------._-------------
Dlh Houn Dli1l Cuaulltive Dlil y Ptrnnt HOtIn Dlil~CulUlith.Dlily Percent
Fi shed Cite tltch CPt.(Cultlhtiv.Fished Cite Cltch-CPUE CUlUhtin
---------------------------------------------------------------------------------850527 7.83 0 0 0.00 0.00 0
850528 13.50 5 5 0.37 1.52 12.75 2 2 0.16 0.73
850529 15.75 5 10 0.32 3.03 23.17 3 5 0.13 1.82
850530 15.42 3 13 0.19 3.94 22.75 0 5 0.00 1.82
850531 12.17 1 14 0.08 4.24 12.08 0 5 0.00 1.82
850601 13.42 0 14 0.00 4.24 12.83 0 5 0.00 1.82
850602 11.SO 0 14 0.00 4.24 11.83 0 5 0.00 1.82
850603 14.33 1 15 0.07 4.55 14.58 0 5 0.00 1.82
850604 11.83 1 16 0.08 4.85 24.08 0 5 0.00 1.82
~850605 14.17 0 16 0.00 4.85 18.58 0 5 0.00 1.82
850606 13.50 4 20 0.30 6.06 11.75 1 6 0.09 2.19
850607 24.33 1 21 0.04 6.36 13.50 0 6 0.00 2.19
850608 24.42 8 29 0.33 8.79 24.00 1 7 0.04 2.55
8S0609 23.58 1 30 0.04 9.09 23.00 0 7 0.00 2.55
F 850610 14.75 6 36 0.41 10.91 11.25 0 7 0.00 2.55
850611 14.58 0 36 0.00 10.91 12.33 1 8 0.08 2.92
850612 12.25 8 44 0.65 13.33 11.83 5 13 0.42 4.74
850613 11.33 9 53 0.79 16.06 11.50 12 25 1.04 9.12
.-850614 10.25 13 66 1.27 20.00 10.83 6 31 0.55 11.31
850615 12.25 4 70 0.33 21.21 12.67 2 33 0.16 12.04
850616 13.17 12 82 0.91 24.85 12.42 6 39 0.48 14.23
850617 11.92 20 102 1.68 30.91 11.25 4 43 0.30 15.69
.-850618 12.25 0 102 0.00 30.91 ll.75 1 44 0.09 16.06
850619 7.92 3 105 0.3a 31.82 13.08 1 45 0.08 16.42
850620 3.00 0 105 0.00 31.82 12.50 0 45 0.00 16.42
850621 11.50 2 107 0.17 32.42 22.58 4 49 O.lB 17.88
850622 12.17 0 107 0.00 32.42 7.75 0 49 0.00 17 .B8
850623 12.33 7 114 0.57 34.55 11.83 0 49 0.00 17.88
85062.9.50 23 137 2.42 41.52 11.92 2 51 0.17 18.61
850625 12.67 7 144 0.55 n.64 12.17 25 76 2.05 27.74
850626 12.50 20 164 1.60 49.70 11.83 6 82 0.51 29.93
850627 12.25 4 168 0.33 50.91 13.17 18 100 1.37 36.50
850628 12.33 16 184 1.30 55.76 11.83 26 126 2.20 45.99
850629 15.92 7 191 0.44 57.88 17.92 27 153 1.51 55.84
850630 20.42 8 199 0.39 60.30 17.33 3 156 0.17 56.93
850701 5.92 3 202 0.51 61.21 9.58 8 164 0.83 59.85
~850702 11.58 1 203 0.09 61.52 8.17 1 165 0.12 60.22
850703 11.75 5 208 0.43 63.03 11.67 5 170 0.43 62.04
850704 12.08 5 213 0.41 64.55 11.33 3 173 0.26 63.14
850705 11.83 14 227 1.18 68.79 12.83 8 IBI 0.62 66.06
850706 16.00 6 233 0.38 70.61 16.43 3 184 0.18 67.15
850707 19.75 4 237 0.20 71.82 18.58 4 188 0.22 68.61
850708 12.00 3 240 0.25 72.73 12.42 0 188 0.00 68.61
850709 12.17 6 246 0.49 74.55 11.42 0 188 0.00 68.61
~....850710 12.25 1 247 0.08 74.85 12.00 I 189 O.oe 68.98
850711 12.25 3 250 0.24 75.76 11.75 1 190 0.09 69.34
850712 11.83 1 251 0.08 76.06 11.83 0 190 0.00 69.34
850713 11.92 3 254 0.25 76.97 12.00 0 190 0.00 69.34
8507J4 12.00 1 255 0.08 77.27 11.7S 2 192 0.17 70.07
8SG715 11.92 0 255 0.00 77.27 12.0B 1 193 0.08 70.44
850716 15.00 3 258 0.20 78.18 14.75 0 193 0.00 70.44
850717 21.00 2 260 0.10 78.79 20.58 0 193 0.00 70.44
850718 12.42 0 260 0.00 78.79 12.33 2 J95 0.16 71.17
850719 12.00 2 262 0.17 79.39 12.33 1 196 0.08 71.53
850720 12.00 0 262 0.00 79.39 11.83 0 196 0.00 71.53
850721 11.92 3 265 0.25 80.30 11.83 1 197 0.08 71.90
850722 11.92 0 265 0.00 80.30 11.92 1 198 0.08 72.26
850723 18.00 0 265 0.00 80.30 16.83 1 199 0.06 72.63
.~850724 18.17 0 265 0.00 80.30 19.08 2 201 0.10 73.30
850725 12.58 0 26S 0.00 80.3<1 12.42 1 202 0.08 73.72
0-17
~
Appendix Table 0.4.Continued.
m:m,
TRAP 1 TRAP 2
------------------------------------------------
Olh Houri Dii 1~CUlullti y!Dlil y Percent Hours Dail ~CUlul.ti ve D.ily P!f'cent
Fi Ihrd Cltc Catch CPUE CUlu1&tive Fi sh!d Cltc C.tch CPL{CUluhtive --------------------------------------------------------------------------------------------------------
8S0726 12.83 3 268 0.23 Bl.21 13.58 0 202 0.00 73.72
850727 11.92 0 268 0.00 81.21 11.92 0 202 0.00 73.72
8S0728 12.17 2 270 0.1b 81.B2 11.92 0 202 0.00 73.72
850729 12.33 0 270 0.00 81.82 11.92 2 204 0.17 74.45 ~~
850730 12.33 2 272 0.16 '82.42 12.17 1 205 0.06 74.82
B50731 11.92 1 273 0.08 82.73 11.50 2 207 0.17 75.55
850801 11.92 0 273 0.00 82.73 12.00 0 207 0.00 75.55
850802 12.08 1 274 0.0Il B3.03 12.08 1 208 O.oe 75.91
850803 12.00 0 274 0.00 B3.03 12.25 1 209 O.oe 76.28
850804 12.33 0 274 0.00 83.03 12.00 0 209 0.00 7b.29
850805 12.42 0 274 0.00 83.03 12.00 0 209 0.00 7b.28
8508Gb 12.92 0 274 0.00 83.03 12.58 0 209 0.00 76.28 $lIlW1
850807 11.83 0 274 0.00 83.03 11.92 2 211 0.17 77.01
850808 12.17 0 274 0.00 83.03 5.75 0 211 0.00 77.01
850809 11.92 2 276 0.17 B3.b4 11.67 1 212 0.09 71.37
850810 17.33 3 279 0.17 B4.55 16.33 2 214 0.12 78.10
850811 19.00 5 284 0.26 B6.06 21.00 7 221 0.33 80.66
850812 12.75 3 287 0.24 86.97 12.08 1 222 0.08 81.02
850813 12.08 b 293 0.50 88.79 12.08 14 236 1.16 .86.13
850814 11.83 5 298 0.42 90.30 12.08 6 242 0.50 88.32
850815 15.83 1 299 0.0.6-90.bl 16.00 5 247 0.31 90.15 ~
850816 20.25 3 302 0.15 91.52 19.50 5 252 0.26 91.97
850817 11.83 1 303 0.08 91.82 11.92 4 25b 0.34 93.43
850818 11.83 1 304 0.08 92.12 11.83 3 259 0.25 94.53
850819 12.67 1 305 O.OB 92.42 12.17 1 260 0.06 94.89
850820 12.08 2 307 0.17 93.03 12.00 3 263 0.25 95.99
850821 12.83 1 308 0.08 93.33 12.50 2 265 0.16 96.72
8S0822 12.42 3 311 0.24 94.24 12.17 0 265 0.00 96.72
850823 12.33 0 311 0.00 94.24 12.50 1 266 0.06 97.08
850824 15.25 0 311 0.00 94.24 12.25 0 266 0.00 97.08 ~
85OB25 20.42 1 312 0.05 94.55 12.50 0 266 0.00 97.08
850826 12.33 1 313 0.08 94.85 12.50 0 266 0.00 97.08
850827 12.50 0 313 0.00 94.85 12.00 0 266 0.00 97.08
850828 12.08 0 313 0.00 94.85 12.25 0 266 0.00 97.08
850829 12.33 0 313 0.00 94.85 13.75 0 266 0.00 97.08 ~
850830 12.50 2 315 0.16 95.45 12.17 0 266 0.00 97.08
850831 15.83 0 315 0.00 95.45 12.33 0 2b6 0.00 97.0B
850901 9.75 0 315 0.00 95.45 9.83 0 266 0.00 97.08
850902 0 -315 95.45 12.17 0 26b 0.00 97.08 ~
850903 8.75 0 315 0.00 95.45 12.67 0 266 0.00 97.08
850904 13.83 0 315 0.00 95.45 13.67 0 266 0.00 97.08
850905 12.08 0 315 0.00 95.45 12.08 0 266 0.00 97.08
850906 13.00 0 315 0.00 95.45 13.58 1 267 0.07 97.45 ~<
850907 12.33 0 315 0.00 95.45 12.25 0 267 0.00 97.45
850908 12.58 0 315 0.00 95.45 11.33 0 267 0.00 97.45
850909 12.00 0 315 0.00 95.45 12.17 0 267 0.00 97.45
850910 12.25 0 315 0.00 95.45 12.50 0 267 0.00 97.45
850911 12.b7 0 315 0.00 95.45 12.b7 0 267 0.00 97.45 """
850912 12.00 0 315 0.00 95.45 12.00 0 2b7 0.00 97.45
850913 12.00 2 317 0.17 96.06 11.H 0 267 0.00 97.45
850914 11.83 3 320 0.25 96.97 0 267 97.45
850915 3.50 0 320 0.00 96.97 12.67 2 269 0.16 98.18 ~
850916 12.00 1 321 0.08 97.27 12.00 1 270 0.08 98.54
850917 12.08 2 323 0.17 97.88 12.08 0 270 0.00 98.s.4
850918 12.42 0 323 0.00 97.8S 12.b7 2 272 0.16 99.27
850919 12.33 1 324 0.08 98.18 12.33 2 274 0.16 100.00 ~\
850920 12.00 0 324 0.00 98.18 11.08 0 274 0.00 100.00
850921 12.42 0 324 0.00 98.18 12.25 1 275 0.09 100.30
850922 12.33 5 329 0.41 99.70 12.00 1 276 O.OB 100.73
850923 12.08 1 330 0.08 100.00 12.17 1 277 0.08 101.~,.-
0-18
Appendix Table 0.5.Flathorn Station sockeye salmon (age 0+)daily and cumulative catch
recorded for the west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps,1985.
TRAP 1 TRAP 2
------------------------------------------------
OItt Hours Dlil~CUIUlltivt Dlily Ptrctnt Hours Dil I~CulUlttiv,DIHy Ptrc,nt
Filhtd Cdc Cilch tPOE CUlulltivt Filhtd Cdc Cltch CPUE C••uhtin
----------------------------------------------------------------------------------
850527 7.93 7 7 0.99 0.20 0
850528 13.50 28 35 2.07 0.99 12.75 9 9 0.71 0.1tO
850529 15.75 40 75 2.54 2.12 23.17 6 15 0.26 0.99
850530 15.42 15 90 0.97 2.54 22.75 31 46 1.30 3.05
.-850531 12.17 8 98 0.60 2.77 12.08 12 58 0.99 3.84
850601 13.42 37 135 2.76 3.81 12.83 18 76 1.40 5.04
950602 11.50 66 201 5.74 5.67 11.83 44 120 3.72 7.95
850603 14.33 44 245 3.07 6.91 14.58 14 134 0.96 8.88
850604 11.83 23 268 1.94 7.56 24.08 12 146 0.50 9.68
~8501t05 14.17 36 304 2.54 8.58 18.58 40 186 2.15 12.33
850606 13.50 41 345 3.04 9.73 11.75 10 196 0.85 12.99
850607 24.33 32 377 1.32 10.64 13.SO 4 200 0.30 13.25
950608 24.42 12 389 0.49 10.98 24.00 20 220 0.83 14.58
850609 23.58 20 409 0.85 11.54 23.00 9 229 0.39 15.18
850610 14.75 70 479 4.75 13.52 11.25 0 .229 0.00 15.18
850611 14.59 21 SOO 1.44 14.11 12.33 12 241 0.97 15.97
850612 12.25 14 514 1.14 14.SO 11.83 5 246 0.42 16.30
850613 11.33 36 550 3.18 15.52 11.50 17 263 1.48 17 .43
850614 10.25 21 571 2.05 16.11 10.83 8 271 0.74 17.96
850615 12.25 11 582 0.90 10.42 12.67 6 277 0.47 18.30
850616 13.17 8 590 0.61 16.65 12.42 8 285 0.64 18.89
8S0617 11.92 5 595 0.42 16.79 11.25 3 288 0.27 19.09
8S0618 12.25 2 597 0.16 16.85 11.75 8 296 0.68 19.62
850019 7.92 0 591 0.00 10.85 13.08 2 298 0.15 19.75
850620 3.00 2 599 0.67 16.90 12.50 6 304 0.48 20.15
950621 11.50 5 604 0.43 17.04 22.58 13 317 0.58 21.01
850622 12.17 3 607 0.25 17.13 7.75 4 321 0.52 21.27
850623 12.33 5 612 0.41 17.27 11.83 4 325 0.34 21.54
850624 9.50 7 619 0.74 17 .47 11.92 11 336 0.92 22.27
850625 12.67 12 031 0.95 17.80 12.17 7 343 0.58 22.73
950626 12.50 16 647 1.28 18.26 11.83 7 350 0.59 23.19
ijO>"850627 12.25 30 677 2.45 19.10 13.17 8 358 0.61 23.72
850628 12.33 25 702 2.03 19.81 11.83 8 366 0.08 24.25
8S0629 15.92 35 737 2.20 20.80 17.92 21 387 1.17 25.65
850630 20.42 121 B58 5.93 24.21 17.33 35 422 2.02 27.97
850701 5.92 23 881 3.89 24.86 9.sa 13 435 1.30 28.83
850702 11.58 69 950 5.96 26.81 8.17 1 436 0.12 28.89
850703 11.15 87 1037 7.40 29.26 11.67 8 444 0.69 29.42
850704 12.08 71 1108 5.88 31.26 11.33 10 454 O.BB 30.09-850705 11.83 76 1184 6.42 33.41 12.83 24 478 1.87 31.68
850706 16.00 136 1320 8.SO 37.25 16.43 32 510 1.95 33.80
850707 19.75 114 1434 5.77 40.40 19.58 26 536 1.40 35.52
850708 12.00 66 1500 5.50 42.33 12.42 25 561 2.01 37.18
950709 12.17 89 1589 7.31 44.84 11.42 27 588 2.30 38.97
850710 12.25 62 1651 5.06 40.59 12.00 18 606 1.SO 40.16
850711 12.25 67 1718 5.47 48.48 11.75 34 640 2.99 42.41
850712 11.83 48 1766 4.06 49.83 11.83 21 661 1.78 43.80
9S0113 11.92 79 1945 6.63 52.06 12.00 28 689 2.33 45.66-950714 12.00 39 1884 3.25 53.16 11.75 27 716 2.30 47.45
950715 11.92 64 1948 5.37 54.97 12.08 44 760 3.64 50.30
850716 15.00 71 2019 4.73 56.97 14.75 47 907 3.19 53.48
950717 21.00 133 2152 6.33 60.72 20.58 53 8bO 2.58 56.99
850719 12.42 29 2181 2.33 61.54 12.33 97 957 7.97 63.42
~950719 12.00 66 2247 5.50 63.40 12.33 45 1002 3.&5 66.40
850720 12.00 38 2285 3.17 64.48 11.83 44 104&3.72 69.32
850721 11.92 ~8 2333 ~.03 65.83 11.83 21 1067 1.78 70.71
850722 11.92 28 2361 2.35 66.62 11.92 23 1090 1.93 72.23
SS0723 19.00 71 2432 3.94 6S.62 16.83 28 1118 1.06 74.09
850724 l8.17 66 2499 3.&3 70.~9 19.~31 1149 1.62 76.14
850725 12.59 46 254~3.60 71.78 12.42 13 1162 1.05 77.00
0-19
~,
Appendix Table 0.5.Continued.
~,
TRAP 1 TRAP 2
------------------------------
Dlh Houri O1i1~CulUhtiYI Daily P,rcent Hours Dlil~Cululativ,Dlily Percent
Filhrd Cate Citeb CPUE Cuullti .,.Filh.d Cltc Clteh CPUE CUlulltivl
---------------------
850726 12.83 57 2601 4."73.39 13.58 25 1187 1.84 79.M
B50727 11.92 43 2044 3.ftl 74.W 11.92 42 1229 3.52 81.44
B5072B 12.17 53 2697 4.35 76.10 11.92 25 1254 2.10 83.10 ~,
B50729 12.33 43 2740 3.49 77.31 11.92 17 1271 1.43 84.23
850730 12.33 32 2772 2.60 7B.22 12.17 12 1283 0.99 85.02
850731 11.92 37 2809 3.10 79.26 11.50 20 1303 1.14 8&.35
850801 11.92 43 2852 3.61 80.47 12.00 14 1317 1.17 87.28 1'1"'"
850802 12.08 40 2892 3.31 81.M!12.08 21 1338 1.74 89.&7
B50803 12.00 61 2953 5.08 B3.32 12.25 9 1347 0.73 89.26
B50804 12.33 64 3017 5.19 B5.13 12.00 15 1362 1.25 90.26
850805 12.42 21 3044 2.17 85.B9 12.00 5 1367 0.42 90.59
850806 12.92 IB 3062 1.39 8&.~12.58 7 1374 0.50 91.05 -
85OB07 11.83 34 3096 2.B1 87.36 11.92 13 1397 1.09 91.92
8S080B 12.17 23 3119 1.89 88.01 .5.75 2 1389 O.~92.05
850809 11.92 22 3141 1.85 88.63 11.67 4 1393 0.34 92.31
850810 17.33 35 3176 2.02 B9.62 16.33 9 1402 0.55 92.91 -85OBl1 19.00 33 3209 1.74 90.55 21.00 13 1415 0.62 93.77
850912 12.75 21 3230 1.65 91.14 12.08 2 1417 0.17 93.90
850813 12.08 7 3237 0.58 91.34 12.08 5 1422 0.41 94.23
B50914 11.83 11 324B 0.93 91.65 12.08 16 1438 1.32 95.211
B50815 15.83 14 3262 0.88 92.04 16.00 B 144&0.50 95.83 -
850816-20.25 14 327&0.69 92.44 19.50 3 1449 0.15 96.02
B50817 11.83 10 3286 0.85 92.72 11.92 5 1454 0.42 96.30
850818 11.83 9 32Cl5 0.76 92.97 11.83 7 1461 0.59 9&.B2
85OB19 .12.&7 32 3321 2.53 93.88 12.17 1 1402 0.08 96.89 1'1"1\
850620 12.08 30 3357 2.48 94.72 12.00 2 14f14 0.17 97.02
850821 12.83 11 3368 0.8lI 95.03 12.50 3 1U7 0.24 97.22
850622 12.42 11 3379 0.B9 95.34 12.17 3 1470 0.2S 97.42
8SOB23 12.33 6 3385 0.49 95.51 12.50 3 1473 0.24 97.61
8S082~15.25 27 3412 l.n 96.28 12.25 4 1477 0.33 97.88
85082 20.42 10 3422 0.49 96.56 12.50 1 1478 0.08 91.95
856826 12.33 6 3428 0.49 9&.73 12.50 1 1479 0.08 98.01
850827 12.50 2 3430 0.16 9&.78 12.00 0 l479 0.00 9B.01
850828 12.0B 7 3437 0.58 9&.99 12.25 0 1479 0.00 98.01
850829 12.33 9 3446 0.73 97.23 13.75 0 1479 0.00 9B.01
850830 12.50 10 3456 0.80 97.52 12.17 0 1479 0.00 9B.Ol
85OB31 15.83 7 3463 0.44 97.71 12.33 0 1419 0.00 9B.Ol
850901 9.75 5 3468 0.51 97.sa 9.83 1 1480 0.10 98.00 ~
850902 0 346B 97.86 12.17 1 1481 0.08 'lB.14
850903 B.75 3 3471 0.34 97.94 12.67 0 14Bl 0.00 9B.14
B50904 13.83 5 3476 0.36 98.08 13.&7 1 1482 0.07 9B.21
850905 12.08 1 3477 0.06 98.11 12.06 0 1482 0.00 9B.21 ~
B50906 13.00 0 3477 0.00 98.11 13.58 1 1483 0.07 98.28
B50907 12.33 0 3477 0.00 99.11 12.25 2 1485 0.16 9B.41
B50908 12.58 3 3480 0.24 98.19 11.33 2 1487 0.18 9B.54
B50909 12.00 4 3484 0.33 98.31 12.17 1 148B 0.08 9B.&1
850910 12.25 3 34B7 0.24 98.39 12.50 0 1488 0.00 98.61
850911 12.67 2 3489 0.16 98.45 12.67 0 148B 0.00 9B.61
8S0912 12.00 &3495 0.50 98.62 12.00 0 1488 0.00 9B.61
B50913 12.00 '2 3497 0.17 99.67 11.67 2 1490 0.17 9B.74
9S0914 11.83 10 3507 0.85 99.96 0 1490 98.74 ~
B50915 3.50 10 3517 2.86 99.24 12.&7 0 1490 0.00 98.74
85091b 12.00 2 3519 0.17 99.29 12.00 2 1492 0.17 98.87
B50917 12.08 4 3523 0.33 99.41 12.08 1 1493 0.08 9B.94
B50918 12.42 2 3525 0.16 99.46 12.67 2 1495 0.16 99.07
B50919 12.33 3 3529 0.24 99.55 12.33 4 1499·0.32 99.34
850920 12.00 4 3532 0.33 99.60 11.OB 0 1499 0.00 99.34
850921 12.42 5 3537 0.40 99.BO 12.25 4 1503 0.33 99.60
B50922 12.33 2 3539 0.16 99.B6 12.00 4 1567 0.33 99.87
B50923 12.08 5 3544 0.41 100.00 12.17 2 1569 0.16 100.00 f/fWA
0-20
Appendix Table 0.6.Flathorn Station sockeye salmon (age 1+)daily and cumulative catch
recorded for the west bank (trap 1)and east bank (trap 2)
stationary outmigrant traps,1985.
TRAP 1 TRAP 2
-------------------------------------------------Dd.Houri Dii 1~CUlUlltiv.Dlily Ptreent Hours Dli1~CulUhtivlt Dlily Ptreent
Fishld Cite Catcb CPUE CUlulativl Fishtcl Cite Catch CPUE CUlulltivl
---------------------------------------------.
850527 7.83 0 0 0.00 0.00 0
850528 13.50 8 8 0.59 1.06 12.75 1 1 0.08 0.24
8S0529 15.75 7 15 0.44 1.98 23.17 1 2 0.04 0.48
850530 15.42 8 23 0.52 3.03 22.75 1 3 0.04 0.72
850531 12.17 12 35 0.99 4.62 12.08 0 3 0.00 0.72
950601 13.42 6 41 0.45 5.41 12.83 4 7 0.31 1.08
r'"850602 11.50 13 54 1.13 7.12 11.93 4 11 0.34 2.64
850603 14.33 31 95 2.16 11.21 14.58 2 13 0.14 3.13
950604 11.93 19 104 1.61 13.72 24.08 1 14 0.04 3.37
950005 14.17 33 137 2.33 19.07 18.58 5 19 0.27 4.57
950006 13.50 23 160 1.70 21.11 11.75 4 23 0.34 5.53
850607 24.33 47 207 1.93 27.31 13.50 B 31 0.59 7.45
850608 24.42 8 215 0.33 28.36 24.00 11 42 0.%10.10
850609 23.58 13 228 0.55 30.08 23.00 I 43 0.04 10.34
850610 14.75 16 244 1.08 32.19 11.25 6 49 0.53 11.78-850611 14.58 37 281 2.54 37.07 12.33 50 99 4.05 23.80
850612 12.25 29 310 2.37 40.90 11.83 25 124 2.11 29.81
850613 11.33 23 333 2.03 43.93 11.50 10 134 0.87 32.21
850014 10.25 33 366 3.22 49.28 10.83 10 144 0.92 34.62-950615 12.25 19 385 1.55 50.79 12.67 14 158 1.11 37.9B
850616 13.17 23 408 1.75 53.B3 12.42 4 162 0.32 38.94
850617 11.92 44 452 3.69 59.63 11.25 17 179 1.51 43.03
850018 12.25 B 460 0.65 60.69 11.75 22 201 1.87 48.32-850619 7.92 27 487 3.41 64.25 13.06 19 220 1.45 52.86
850620 3.00 2 489 0.67 64.51 12.50 18 238 1.44 57.21
850621 11.50 8 497 0.70 65.57 22.58 26 264 1.15 63.46
850622 12.17 11 50S 0.90 67.02 7.75 1 265 0.13 63.70
850623 12.33 19 527 1.54 69.53 11.93 9 274 0.76 65.87-850624 9.50 79 606 8.32 79.95 11.92 23 297 1.93 71.39
850625 12.67 41 647 3.24 85.36 12.17 43 340 3.53 81.73
950676 12.50 39 686 3.12 90.50 11.93 18 358 1.52 86.06
850627 12.25 25 711 2.04 93.80 13.17 13 371 0.99 89.18
S50628 12.33 10 721 0.81 95.12 11.83 7 378 0.59 90.87
950629 15.92 6 727 0.38 95.91 17.92 9 386 0.45 92.79
850630 20.42 2 729 0.10 96.17 17.33 6 392 0.35 94.23
850701 5.92 1 730 0.17 96.31 9.58 1 393 0.10 94.47
850702 H.58 3 133 0.26 96.70 8.17 0 393 0.00 94.47
850703 11.75 1 734 0.09 96.93 11.67 17 410 1.%98.50
850704 12.08 4 738 0.33 97.36 11.33 0 410 0.00 98.56
850705 11.83 4 742 0.34 97.89 12.83 2 412 0.16 99.04
850706 16.00 6 748 0.38 98.68 16.43 2 414 0.12 99.52
r-850707 19.75 2 750 0.10 98.94 18.58 0 414 0.00 99.52
850708 12.00 1 751 0.08 99.08 12.42 0 414 0.00 99.52
850709 12.17 3 754 0.25 99.47 11.42 1 415 0.09 99.76
850710 12.25 2 756 0.16 99.74 12.00 0 415 0.00 99.76
~850711 12.25 I 757 0.08 99.87 11.75 0 415 0.00 99.76
950712 11.83 0 757 0.00 99.87 11.83 0 415 0.00 99.76
850713 11.92 0 757 0.00 99.87 12.00 0 415 0.00 99.76
850714 12.00 0 757 0.00 99.87 11.7S 0 415 0.00 99.76
850715 11.92 0 757 0.00 99.87 12.08 0 415 0.00 99.76
850716 15.00 0 757 0.00 99.87 14.75 0 415 0.00 99.76
850717 21.00 0 757 0.00 99.87 20.58 0 415 0.00 99.76
850718 12.42 0 757 0.00 99.87 12.33 0 415 0.00 99.76
850719 12.00 0 757 0.00 99.87 12.33 0 415 0.00 99.76
.....850720 12.00 1 758 0.08 100.00 11.83 1 416 0.08 100.00
I 850721 11.92 0 758 0.00 100.00 11.83 0 416 0.00 100.00
850722 11.92 0 758 0.00 100.00 11.92 0 416 0.00 100.00
950723 18.00 0 759 0.00 100.00 16.83 0 416 0.00 100.00
850724 19.17 0 758 0.00 100.00 19.06 0 416 0.00 100.00-B50725 .12.58 0 758 0.00 100.00 12.42 0 416 0.00 100.00
0-21
Appendix Table 0.6.Continued."""
TRAP 1 TRAP 2
---------------------------------------~,
nlte Hcurl Dlil~CulUhtive Ddly Ptreent HOUri nlil~CulUhtive Dlily Percent
Fished Cite titch CPUE CIt.dative Fhhtd Cite tlteh CPUECMlul.tivf
----------------------------------------------------------------------------------
B50726 12.B3 0 758 0.00 100.00 13.58 0 416 0.00 100.00 ~
950727 11.92 0 759 0.00 100.00 li.92 0 416 0.00 100.00
850728 12.17 O.7SB 0.00 100.00 11.92 0 416 0.00 '100.00
850729 12.33 0 758 0.00 100.00 11.92 0 416 0.00 100.00
850730 12.33 0 758 0.00 100.00 12.17 0 416 0.00 100.00
850731 11.92 0 758 0.00 100.00 11.50 0 416 0.00 100.00 -"B50901 11.92 0 759 0.00 100.00 12.00 0 416 0.00 100.00
850802 12.08 0 758 0.00 100.00 12.08 0 416 0.00 100.00
1150803 12.00 0 75B 0.00 100.00 12.25 0 416 0.00 100.00
850804 12.33 0 758 0.00 100.00 12.00 0 416 0.00 100.00 ~
950805 12.42 0 758 0.00 100.00 12.00 0 416 0.00 100.00
850806 12.92 0 758 0.00 100.00 12.58 0 416 0.00 100.00
850807 11.83 0 75B 0.00 100.00 11.92 0 416 0.00 100.00
850808 12.17 0 758 0.00 100.00 5.75 0 416 0.00 100.00
8SOB09 11.92 0 758 0.00 100.00 11.61 0 416 0.00 100.00 -
850810 17.33 0 758 0.00 100.00 16.33 0 416 0.00 100.00
850811 19.00 0 758 0.00 100.00 21.00 0 416 0.00 100.00
850812 12.75 0 758 0.00 100.00 12.08 0 416 0.00 100.00
850913 12.08 0 75B 0.00 100.00 12.0B 0 416 0.00 100.00 -
85G814 11.83 0 75fl 0.00 100.00 12.08 0 416 0.00 100.00
850815 15.83 0 758 0.00 100.00 16.00 0 416 0.00 100.00
850816 20.25 0 758 0.00 100.00 19.50 0 416 0.00 100.00
850817 I1.B3 0 758 0.00 100.00 11.92 0 416 0.00 100.00
850818 11.83 0 758 0.00 100.00 11.83 0 416 0.00 100.00
850819 12.67 0 75B 0.00 100.00 12.17 0 416 0.00 100.00
850820 12.08 0 758 0.00 100.00 12.00 0 416 0.00 100.00
B50821 12.83 0 758 0.00 100.00 12.50 0 416 0.00 100.00
B50822 12.42 0 758 0.00 100.00 12.17 0 416 0.00 100.00 ,f!,£§'lt;
850823 12.33 0 758 0.00 100.00 12.SO 0 416 0.00 100.00
850824 15.25 0 75B 0.00 100.00 12.25 0 416 0.00 100.00
850B25 20.42 0 758 0.00 100.00 12.50 0 416 0.00 100.00
B50826 12.33 0 758 0.00 100.00 12.50 0 416 0.00 100.00 ~
850827 12.50 0 758 0.00 100.00 12.00 0 416 0.00 100.00
850828 12.08 0 75B 0.00 100.00 12.25 0 416 0.00 100.00
850829 12.33 0 758 0.00 100.00 13.75 0 416 0.00 100.00
850830 12.50 0 758 0.00 100.00 12.17 0 416 0.00 100.00 ~
850831 15.83 0 758 0.00 100.00 12.33 0 416 0.00 100.00
850901 9.75 0 758 0.00 100.00 9.B3 0 416 0.00 100.00
850902 0 759 100.00 12.17 0 416 0.00 100.00
850903 8.75 0 758 0.00 100.00 12.67 0 416 0.00 100.00
850904 13.83 0 758 0.00 100.00 13.67 0 41&0.00 100.00 ~
850905 12.0B 0 758 0.00 100.00 12.08 0 416 0.00 100.00
850906 13.00 0 758 0.00 100.00 13.59 0 41&0.00 100.00
850907 12.33 0 758 0.00 100.00 12.25 0 416 0.00 100.00
850908 12.58 0 758 0.00 100.00 1J .33 0 416 0.00 100.00
850909 12.00 0 758 0.00 100.00 12.17 0 416 0.00 100.00
950910 12.25 0 758 0.00 100.00 12.~0 416 0.00 100.00
850911 12.1>7 0 758 0.00 100.00 12.&7 0 H&0.00 100.00
850912 12.00 0 75B 0.00 100.00 12.00 0 416 0.00 100.00
850913 12.00 0 758 0.00 100.00 11.1>7 0 416 0.00 100.00
850914 11.B3 0 75B 0.00 100.00 0 416 ----100.00
850915 3.50 0 758 0.00 100.00 12.67 0 416 0.00 100.00
850911>12.00 0 758 0.00 100.00 12.00 0 416 0.00 100.00
85<l917 12.08 0 759 0.00 100.00 12.08 0 416 0.00 100.00 ~
850918 12.42 0 758 0.00 100.00 12.67 0 416 0.00 100.00
850919 12.~3 0 758 0.00 100.00 12.33 0 416 0.00 100.00
850920 12~00 0 758 0.00 100.00 11.08 0 416 0.00 100.00
850921 12.42 0 758 0.00 100.00 12.25 0 416 0.00 100.00
850922 12.33 0 758 0.00 100.00 12.00 0 416 0.00 100.00
850923 12.09 0 759 0.00 100.00 12.17 0 416 0.00 100.00
0-22
Appendix Table 0.7.Flathorn Station chum salmon fry daily and cumulative catch
recorded for the west bank (trap 1)and east bank (trap 2)
~stationary outmigrant traps,1985.
TRAP I TRAP 2
------------------------------------------------
htt Houri Dlil~CUlUlltiv,Dlily PtrClnt Houri Dlil~CUlUlltivl Dlily Perclnt
fhhtd Cate Cltch CPUE CUlulativl filhtd Cate Cltch CPUE Cwaulltivt
------------------------------------------------------------------------------
850527 7.83 90 90 11.49 1.20 0
850528 13.50 313 403 23.19 5.38 12.75 ISO 150 11.77 3.96
B50529 15.75 351 754 22.29 10.07 23.17 17b 326 7.60 8.60
1!8~~1~.4~129 183 ':~I H·79 i2•75 163 489 ~:n 12.90
I .1 B8 71 .97 2.08 70 559 14.75
B~I 13.42 216 1187 16.10 15.85 12.83 81 640 6.31 16.88
8~2 11.50 180 1307 15.65 18.26 11.83 103 743 8.71 19.60
850603 14.33 221 1588 15.42 21.21 14.58 77 B20 5.28 21.63
8S0604 II.B3 26B 1856 22.65-24.79 24.08 145 965 6.02 25.46
850605 14.17 594 2450 41.93 32.72 18.58 333 1298 17.92 34.24
850606 13.50 487 2937 36.07 39.22 11.75 47 1345 4.00 35.48
BSOOO7 24.33 711 3648 29.22 48.72 13.50 37 1382 2.74 36.45
BS0608 24.42 229 3877 9.38 51.78 24.00 143 1525 5.96 40.23-B50609 23.58 146 4023 6.19 53.73 23.00 72 1597 3.13 42.13
B50610 14.75 199 4222 13.49 56.38 11.25 30 1633 3.20 43.08
850611 14.58 33 4255 2.26 56.82 12.33 30 1609 2.92 44.03
B50612 12.25 40 4295 3.27 57.36 11.83 47 1716 3.97 45.27
850613 11.33 105 4400 9.27 5B.76 11.50 149 1865 12.96 49.20
B50614 10.25 174 4574 16.96 61.0B 10.B3 147 2012 13.57 53.07
850615 12.25 153 4727 12.49 63.13 12.67 107 2119 8.45 55.90
B50616 13.17 138 4865 10.4B 64.97 12.42 79 2198 6.36 57.9B
B50617 11.92 BS 4950 7.13 66.11 11.25 44 2242 3.91 59.14
B506IB 12.25 67 5017 5.47 67.00 11.75 71 2313 6.04 61.01
850619 7.92 49 5046 6•.19 67.65 13.08 47 2360 3.59 62.25
B50620 3.00 3 5069 1.00 67.69 12.50 37 2397 2.96 63.23
B50621 11.50 59 512B 5.13 6B.48 22.58 53 2450 2.35 64.63
BS0622 12.'17 45 5173 3.70 69.08 7.75 38 24B8 4.90 65.63
85062~12.33 67 5240 5.43 69.98 n.83 45 2533 3.80 66.B2
8S06.24 9.50 174 5414 18.32 72.30 11.92 93 2626 7.80 69.27
B50625 12.67 206 5620 16.27 75.05 12.17 90 271b 7.40 71.04
850626 12.50 252 5872 20.16 78.42 11.83 80 2796 6.76 73.75
850627 12.25 490 6302 40.00 84.96 13.17 291 3087 22.10 81.43
8S0628 12.33 248 6610 20.11 88.27 11.83 141 3228 11.92 85.15
850629 15.92 162 6772 10.18 90.44 17.92 IB3 3411 10.21 89.98
850630 20.42 282 7054 13.81 94.20 17.33 14B 3559 8.54 93.88
~850701 5.92 40 7094 6.76 94.74 9.58 61 3620 6.37 95.49
850702 11.58 90 7184 7.77 95.94 B.17 6 3026 0.73 95.65
850703 11.75 13 7197 1.11 96.11 11.67 1 3627 0.09 95.67
850704 12.08 51 7248 4.22 9b.79 11.33 20 3647 1.76 9b.20
850705 11.83 30 7278 2.54 97.20 12.83 12 3659 0.94 96.52-850706 16.00 59 7337 3.69 97.98 16.43 9 3608 0.55 96.76
850707 19.75 19 7356 0.96 9B.24 18.58 7 3675 0.38 96.94
850708 12.00 7 7363 0.58 98.33 12.42 11 3686 0.89 97.23
850709 12.17 IS 7378 1.23 98.53 11.42 14 3700 1.23 97.bO
"...850710 12.25 10 7388 0.82 98.66 12.00 10 3710 0.83 97.86
,850711 12.25 20 7408 1.b3 98.93 11.75 14 3724 1.19 98.23
850712 II.B3 5 7413 0.42 99.00 11.83 8 3732 0.68 98.44
B50713 11.92 4 7417 0.34 99.05 12.00 9 3741 0.75 9B.68
850714 12.00 11 7428 0.92 99.20 11.75 12 3753 1.02 99.00
850715 11.92 5 7433 0.42 99.27 12.OS 5 3758 0.41 99.13
850716 15.00 8 7441 0.53 99.37 14.75 5 3763 0.34 99.26
850717 21.00 7 7448 0.33 99.47 20.58 2 3765 0.10 99.31
850718 12.42 6 7454 0.48 99.55 12.33 7 3772 0.57 99.50
850719 12.00 1 7455 0.08 99.56 12.33 3 3775 0.24 99.5a
B50720 12.00 2 7457 0.17 99.59 11.83 3 3778 0.25 99.Oil
850721 11.92 3 7460 0.25 99.63 11.83 ]3779 0.08 99.68
850722 11.92 7 7467 0.59 99.72 11.92 I 3780 0.08 99.71
850723 19.00 3 7470 0.17 99.76 16.~I 3781 0.06 99.74
850724 18.17 I 7471 0.06 99.77 19.08 I 37B2 0.05 99.76
B50725 12.58 4 7475 0.32 99.83 12.42 0 3782 0.00 99.76
~0-23
Appendix Table 0.7.Continued.~~
TRAP 1 TRAP 2
--------------------------------
D.b Houn D.i1t CulUl.tivl Daily Ptrcent Houri Dlil~CuIUI.tivt DtiJy Percent
Filhfd Cite Clleh CPUE C~.ul.tiv,.Fished Cite C.teh CPUE Cu.~lItiv,
-------------------..--------------------------------------------------------------. .
850726 12.83 0 7475 0.00 99.83 13.58 2 3794 0.15 99.82 ,.."
850727 11.92 4 7479 0.3-4 99.88 11.92 0 3784 0.00 99.82
850728 12.17 I 7480 0.08 99.89 11.92 1 3785 0.08 99.8-4
850729 12.33 1 7481 0.08 99.91 11.92 2 3787 0.17 99.89
850730 12.33 0 7481 0.00 99.91 12.17 0 3787 0.00 99.99 ~
850731 11.92 0 7481 0.00 99.91 11.50 2 3789 0.17 99.95
850801 11.92 1 7482 0.08 99.92 12.00 0 3789 0.00 99.95
8soeo2 12.08 0 7482 0.00 99.92 12.08 0 3789 0.00 99.95
850903 12.00 0 7492 0.00 99.92 12.25 0 3799 0.00 99.95
850804 12.33 1 748~0.08 99.93 12.00 I 3790 0.08 99.97 -
B50805 12.42 1 7484 0.08 99.95 12.00 0 3790 0.00 99.97
850806 12.92 0 7484 0.00 99.95 12.5&0 3790 0.00 99.97
850007 11.83 0 7494 0.00 99.95 11.92 0 3790 0.00 99.97
95OB09 12.17 0 7494 0.00 99.95 5.75 0 3790 0.00 99.97 .....
850809 11.92 0 7494 0.00 99.95 11.&7 0 3790 0.00 99.97
850910 17.33 1 7485 0.06 99.96 16.33 0 3790 0.00 99.97
950911 19.00 I 7486 0.05 99.97 21.00 0 3790 0.00 99.97
9S0812 12.75 0 7486 0.00 99.97 12.08 0 3790 0.00 99.97
850813 12.08 0 7486 0.00 99.97 12.08 0 3790 0.00 99.97
850814 11.83 0 7496 0.00 99.97 12.08 0 3790 0.00 99.97
850815 15.83 0 7496 0.00 99.97 16.00 0 3790 0.00 99.97
850916 20.25 0 7486 0.00 99.91 19.50 1 3791 0.05 100.00
950817 11.83 0 7486 0.00 99.97 11.92 0 3791 0.00 100.00 ""'"
850818 11.83 0 7486 0.00 99.97 11.83'0 3791 0.00 100.00
850819 12.67 0 7486 0.00 99.91 12.17 0 3791 0.00 100.00
85OB20 12.08 0 7496 0.00 99.97 12.00 0 3791 0.00 100.00
850821 12.83 0 7496 0.00 99.97 12.50 0 3791 0.00 100.00
850822,12.42 0 7486 0.00 99.97 12.17 0 3791 0.00 100.00
850823 12.33 1 7497 0.08 99.99 12.50 0 3791 0.00 100.00
850824 15.25 0 7497 0.00 99.99 12.25 0 3791 0.00 100.00
B50825 20.42 0 7487 0.00 99.99 12.50 0 3791 0.00 100.00
850826 12.33 0 7487 0.00 99.99 12.50 0 3791 0.00 100.00 ~
850827 12.50 0 7487 0.00 99.99 12.00 0 3791 0.00 100.00
850828 12.08 0 7487 0.00 99.99 12.25 0 3791 0.00 100.00
BS0829 12.33 0 7487 0.00 99.99 13.75 0 3791 0.00 100.00
850830 12.50 0 7487 0.00 99.99 12.17 0 3791 0.00 100.00
850831 15.83 0 7487 0.00 99.99 12.33 0 3791 0.00 100.00
850901 9.75 0 7487 0.00 99.99 9.83 0 3791 0.00 100.00
850902 0 7487 99.99 12.17 0 3791 0.00 100.00
850903 8.75 0 7487 0.00 99.99 12.67 0 3791 0.00 100.00 ~,
850904 13.83 0 7487 0.00 99.99 13.67 0 3791 0.00 100.00
850905 12.08 0 7487 0.00 99.99 12.08 0 3791 0.00 100.00
850906 13.00 0 7487 0.00 99.99 13.58 0 3791 0.00 100.00
850907 12.33 0 7497 0.00 99.99 12.25 0 3791 0.00 100.00
950908 12.58 0 7487 0.00 99.99 11.33 0 3791 0.00 100.00 """
850%9 12.00 0 7487 0.00 99.99 12.17 0 3791 0.00 100.00
850910 12.25 0 7487 0.00 99.99 12.50 0 3791 0.00 100.00
850911 12.07 0 7497 0.00 99.99 12.67 0 3791 0.00 100.00
850912 12.00 0 7487 0.00 99.99 12.00 0 3791 0.00 100.00
B50913 12.00 0 74B7 0.00 99.99 11.~7 0 3791 0.00 100.00
850914 11.93 0 7487 0.00 99.99 0 3791 ----100.00
850915 3.50 1 7488 0.29 100.00 12.67 0 3791 0.00 100.00
B50916 12.00 0 7488 0.00 100.00 12.00 0 3791 0.00 100.00
B50917 12.08 0 H8B 0.00 100.00 12.08 0 3791 0.00 100.00 ~
850918 12.42 0 7488 0.00 100.00 12.07 0 3791 0.00 100.00
850919 12.33 0 7498 0.00 100.00 12.33 0 3791 0.00 100.00
850920 12.00 0 7498 0.00 100.00 11.06 0 3791 0.00 100.00
850921 12.42 0 7488 0.00 100.00 12.25 0 3791 0.00 100.00
850922 12.33 0 74S8 0.00 100.00 12.00 0 3791 0.00 100.00
850923 12.08 0 7488 0.00 100.00 12.17 0 3791 0.00 100.00
0-24
~
Appendix Table 0.8.Fl athorn Station pink salmon fry da i ly and cumulative catch
recorded for the west bank (trap 1 )and east bank (trap 2)
stationary outmigrant traps,1965.
TRAP 1 TRAP 2
----------------------------------------------....
Dati Houri Dlil~CuIUIIUVI Dlily Ptrctnt Houri Dlil~CUlUldht Dilly Ptrctnt
filhtd catc tllch CP~Cuaulltin Fhhtd catc !:.Itch CPUE CuauhUn
--_........-----------_........-----------------------------------------------------------------........-----------
850527 7.83 7 7 0.89 0.33 0
850528 13.50 27 34 2.00 1.61 12.75 16 16 1.26 0.72
850529 15.75 13 47 0.83 2.22 23.17 13 29 0.50 1.30
850530 15.42 12 59 0.78 2.79 22.75 43 72 1.89 3.22
850531 12.17 7 66 0.58 3.12 12.06 4 76 0.33 3.40
850601 13.42 5 71 0.37 3.36 12.83 7 83 0.55 3.71
850602 11.50 8 79 0.70 3.74 11.83 4 87 0.34 3.89
850603 14.33 17 96 1.19 4.54 14.58 5 92 0.34 4.11
850604 11.83 4 100 0.3-4 4.73 24.08 18 110 0.75 4.92
850605 14.17 79 179 5.58 8.47 18.58 33 143 1.78 6.39
850606 13.50 61 240 4.52 11.35 11.75 22 165 1.87 7.38
850607 24.33 39 279 1.60 13.20 13.50 2 167 0.15 7.47
85OltOB 24.42 25 304 1.02 14.38 24.00 29 196 1.21 8.76
850609 23.58 31 335 1.31 15.85 23.00 32 228 1.39 10.19-850610 14.75 93 428 6.31 20.25 11.25 16 244 1.42 10.91
850611 14.58 82 510 5.62 24.12 12.33 115 359 9.33 16.05
850612 12.25 72 582 5.88 27.53 1l.83 B8 447 7.«19.98
850613 11.33 57 639 5.03 30.23 11.50 89 536 7.74 23.96
~850614 10.25 60 699 5.85 33.07 10.83 96 632 8.86 28.25
850615 12.25 124 823 10.12 38.93 12.67 118 750 9.32 33.53
850616 13.17 36 859 2.73 40.63 12.42 57 807 4.59 36.08
850617 11.92 38 897 3.19 42.43 11.25 119 926 10.58 41.39
,,-850618 12.25 42 939 3.43 44.42 11.75 83 1009 7.00 45.11
850619 7.92 29 968 3.66 45.79 13.08 .154 1163 11.77 51.99
850620 3.00 10 978 3.33 46.26 12.50 123 1286 9.84 57.49
850621 11.50 36 1014 3.13 47.97 22.58 107 1393 4.74 62.27
850622 12.17 40 1054 3.29 49.86 7.75 38 1431 4.90 63.97
850623 12.33 77 1131 6.24 53.50 11.83 110 1541 9.30 68.89
850624 9.50 126 1257 13.26 59.46 11.92 233 1774 19.55 79.30
850625 12.67 113 1370 8.92 64.81 12.17 70 1844 5.75 82.43
850626 12.50 60 1430 4.80 67.64 11.83 53 1897 4.48 84.80
.~850627 12.25 81 1511 6.61 71.48 13.17 51 1948 3.87 87.08
850628 12.33 52 1563 4.22 73.94 11.83 61 2009 5.16 89.81
850629 15.92 92 1655 5.78 78.29 17.92 110 2119 6.14 94.73
850630 20.42 169 1824 8.28 86.28 17.33 52 2171 3.00 97.05
.~
850701 5.92 33 1857 5.58 87.84 9.58 24 2195 2.50 98.12
850702 11.58 87 1944 7.51 91.96 8.17 1 2196 0.12 98.17
850703 11.75 58 2002 4.94 94.70 11.67 4 2200 0.34 98.35
850704 12.08 26 202&2.15 95.93 11.33 1 2201 0.09 98.39
B50705 11.83 23 2051 1.94 97.02 12.83 6 2207 0.47 98.66
850706 16.00 14 2005 0.88 97.08 16.43 5 2212 0.30 98.88
850707 19.75 6 2071 0.30 97.97 18.58 5 2217 0.27 99.11
850708 12.00 9 2080 0.75 98.39 12.42 1 2218 0.08 99.15
850709 12.17 4 2084 0.33 98.58 11.42 2 2220 O.IB 99.24
850710 12.25 4 2088 0.33 98.77 12.00 1 2221 0.08 99.29
850711 12.25 4 2092 0.33 98.96 11.75 3 2224 0.26 99.42
850712 11.83 1 2093 0.08 99.01 11.83 3 2227 0.25 99.55
850713 11.92 1 2094 0.06 99.05 12.00 1 2228 0.08 99.60
850714 12.00 1 2095 0.08 99.10 11.75 3 2231 0.26 99.73
~.85071S 11.92 2 2097 0.17 99.20 12.08 1 2232 O.OB 99.78
850716 15.00 7 2104 0.47 99.53 14.75 1 2233 0.07 99.92
850717 21.00 0 2104 0.00 99.53 20.sa 1 2234 0.05 99.87
85071B 12.42 1 2105 O.OB 99.57 12.33 1 2235 0.08 99.91
850719 12.00 2 2107 0.17 99.67 12.33 0 2235 0.00 99.91
850720 12.00 0 2107 0.00 99.67 11.83 1 2236 O.OB 99.96
850721 11.92 S 2112 0.42 99.91 11.83 0 2236 0.00 99.96
850722 11.92 0 2112 0.00 99.91 11.92 0 2230 0.00 99.96
850723 18.00 1 2113 0.00 99.95 16.83 1 2237 0.06 100.00
850724 18.17 I 2114 0.00 100.00 19.08 0 2237 0.00 100.00
850725 12.58 0 2114 0.00 100.00 12.42 0 2237 0.00 100.00
""'"D-25
.~
Appendix T!ble 0.8.Continued.
TRAP I TRAP 2
------------------------------------------------
Ode HOUfl Dlil&Cu.ulltive Dlily Pefcent HOUfS D.il~:ulul.tive Diily Ptrcent
Filbtd Cite Cltch CPUE CUiulltivt Fi shed Cltc Cdch CPIJE CUl\lllti VI!
-------------------------------------------------------------------------------------------------------
8SOn6 12.83 0 2114 0.00 100.00 13.58 0 2237 0.00 100.00
B50727 11.92 0 2114 0.00 100.00 11.92 0 2237 0.00 100.00
B5072B 12.17 0 2114 0.00 100.00 11.92 0 2237 0.00 100.00
850729 12.33 0 2114 0.00 100.00 11.92 0 2237 0.00 100.00
850730 12.33 0 2114 0.00 100.00 12.17 0 2237 0.00 100.00
850731 11.92 0 2114 0.00 100.00 11.50 0 2237 0.00 100.00
850801 11.92 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00 ~
B50802 12.08 0 2114 0.00 100.00 12.08 0 2237 0.00 100.00
BSOB03 12.00 0 2114 0.00 100.00 12.25 0 2237 0.00 100.00
85OB04 12.33 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00
B50805 12.42 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00 ~,
B50806 12.92 0 2114 0.00 100.00 12.58 0 2237 0.00 100.00
850907 11.83 0 2114 0.00 100.00 11.92 0 2237 0.00 100.00
85080B 12.17 0 2114 0.00 100.00 5.75 0 2237 0.00 100.00
950809 11.92 0 2114 0.00 100.00 11.67 0 2237 0.00 100.00
B5OB10 11.33 0 2114 0.00 100.00 16.33 0 2237 0.00 100.00
850811 19.00 0 2114 0.00 100.00 21.00 0 2237 0.00 100.00
B50812 12.75 0 2114 0.00 100.00 12.06 0 2237 0.00 100.00
85OB13 12.08 0 2114 0.00 100.00 12.06 0 2237 0.00 100.00
850BI4 11.B3 0 2114 0.00 100.00 12.08 0 2237 0.00 100.00 -850815 15.83 0 2114 0.00 100.00 16.00 0 2237 0.00 100.00
850816 20.25 0 2114 0.00 100.00 19.5O 0 2237 0.00 100.00
85GB I7 11.83 0 2114 0.00 100.00 11.92 0 2237 0.00 100.00
8SOB18 11.83 0 2114 0.00 100.00 11.83 0 2237 0.00 100.00
850819 12.67 0 2114 0.00 100.00 12.17 0 2237 0.00 100.00
850820 12.08 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00
850821 12.83 0 2114 0.00 100.00 12.50 0 2237 0.00 100.00
850822 12.42 0 2114 0.00 100.00 12.17 0 2237 0.00 100.00
B50823 12.33 0 2114 0.00 100.00 12.50 0 2237 0.00 100.00
B50824 15.25 0 2114 0.00 100.00 12.25 0 2237 0.00 100.00
85OB25 20.42 0 2114 0.00 100.00 12.50 0 2237 0.00 100.00
8S0826 12.33 0 2114 0.00 100.00 12.50 0 2237 0.00 100.00
850827 12.50 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00 ~,
950828 12.08 0 2114 0.00 100.00 12.25 0 2237 0.00 100.00
B50B29 12.33 0 2114 0.00 100.00 13.75 0 2237 0.00 100.00
850B30 12.50 0 2114 0.00 100.00 12.17 0 2237 0.00 100.00
B50831 15.B3 0 2114 0.00 100.00 12.33 0 2237 0.00 100.00
B50901 9.75 0 2114 0.00 100.00 9.83 0 2237 0.00 100.00 ~
850902 0 2114 ---100.00 12.17 0 2237 0.00 100.00
850903 8.75 0 2114 0.00 100.00 12.67 0 2237 0.00 100.00
B50904 13.83 0 2114 0.00 100.00 13.67 0 2237 0.00 100.00
850905 12.08 0 2114 0.00 100.00 12.08 0 2237 0.00 100.00
B50906 13.00 0 2114 0.00 100.00 13.59 0 2237 0.00 100.00
B50907 12.33 0 2114 0.00 100.00 12.25 0 2237 0.00 100.00
B5090B 12.58 0 2114 0.00 100.00 11.33 0 2237 0.00 100.00
850909 12.00 0 2114 0.00 100.00 12.17 0 2237 0.00 100.00
850910 12.25 0 2114 0.00 100.00 12.50 0 2237 0.00 100.00 ...,
850911 12.67 0 2114 0.00 100.00 12.67 0 2237 0.00 100.00
850912 12.00 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00
850913 12.00 0 2114 0.00 100.00 11.67 0 2237 0.00 100.00
850914 11.83 0 2U4 0.00 100.00 0 -2237 100.00
850915 3.50 0 2U4 0.00 100.00 12.67 0 2237 0.00 100.00
850916 12.00 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00
850917 12.DB 0 2114 0.00 100.00 12.0B 0 2237 0.00 100.00
850918 12.42 0 2114 0.00 100.00 12.67 0 2237 0.00 100.00 ~
850919 12.33 0 2114 0.00 100.00 12.33 0 2237 0.00 100.00
850920 12.00 0 2114 0.00 100.00 11.0B 0 2237 0.00 1.00.00
850921 12.42 0 2114 0.00 100.00 12.25 0 2237 0.00 100.00
850922 12.33 0 2114 0.00 100.00 12.00 0 2237 0.00 100.00
850923 12.0B 0 2114 0.00 Joo.OO 12.17 0 2237 0.00 100.00
0-26
-
APPENDIX E
Length and Weight Relationship Data for Juvenile Salmon,1985
E-l
......
I
Length and weight relationship data was collected from samples of all
five species of juvenile salmon collected in the stationary outmigrant
traps at Talkeetna and Flathorn stations.A regression was done on the
natura 1 1oga rithm of wei ght versus the natural 1oga rithm of 1ength for
each species and each collection site (Appendix Fig.E1 -E7).The
regression equations for Tal keetna and Flathorn stations were used to
provide estimates of the cumulative biomass passing these sites for each
speci es and age cl ass by two week sampl i ng peri od through the season
(Appendix Fig.E8 -EI5).
The difference between the cumulative biomass movement and the movement
of total numbers of fish (cumulative catch)results from fish growth
occurr";ng during the open-water season.The cumulative biomass curve is
probably a better indicator of the value of rearing habitat in each
reach of river.If suitable habitat is available,fish.are able to
spend a greater time rearing and obtaining additional growth.The value
is realized in the "increased probability that these larger fish will
survive to return as adults.Management decisions for these fish should
consider the timing of total biomass movement in the river rather than
formulating actions only from the catch data •
E-2
TALKEETNA STATION 1985
CHtNOOK:lDtGTH/WElOHT ~
14
~~
13 10Q.'1 =-12.80 +-3.251091.
12 ,2 =0.98 a
11~
10
a a....•'-"•,-
f 7
~•.-
5
4
:s
2
~a
110JO5070gO
lAnoth (mm)
r~'i<$
FLATHORN STATION 1985~
~:.l..EHOT'H,I"tWJ ~
14
a1310ge'1 =-11.63 +2.97 109••
a,2 =0.9812
11
10..•
a.....•t a-7
~•
5
~4
3
2~
0
110JO5070ao
0 Actual Oena ~(mmdo."puted Ocrta
-
Appendix Figure E.l.Weight/length relationship for juvenile chinook
salmon collected at the Talkeetna (upper figure)
and Flathorn (lower figure)stationary outmigrant
traps,1985.
E-3
TALKEETNA STATION 1985
CClHOt I..DfCmf,I'WEIO .......,..
-
-
a
170t!lO
D
10 110 130
lAn9t"(mm)
70
100,y '"-11.98.3.05 100,1
,2"'0.99
<WI
<40
,]5
30....
III-t 25
20
~
115
10
15
0
30
IOOe y =-12.06.3.07 10Q,I
,2 =0.98
FLATHORN STATION 1 985
COHO:LENOTH/l¥ElQfT JltEORESSON
4S
40
3S
30,....
CI'
~-25i...•20
~
1S
10
S
a
30
a
50 70
Actual Data
liIO 110 1.30 150
Tatal Ienqth (mm)
-Con1put.-d Data
170
-
Appendix Figure E.2.Weight/length relationship for juvenile coho
salmon collected at the Talkeetna (upper figure)
and Flathorn (lower figure)stationary outmigrant
traps,1985.E-4
-
TALKEETNA STATION 1985
IOCI<I:m L.DfCmf/'WIXlHT ~
12
11 10<;1,'f"-13.00 ..3.27 10Q.Il
to r 2 ::0.96
II
•..--7
f •
~II
4
3~
2
0
20 SO 80 tOO 120
LAnvth (mm)
120100606040
FLATHORN STATION 1985
SOCKEYE:LENGTH/WElGHT REGRESSION
10<;1,'1::-12.75 ..3.22 IOOell
r 2 ::0.97
oL---,"III!!!~:"'=------.----r---.-----,r----r---.-----l
20
12
11
10
sa
8,.....
~7...c;
0'6..•
~5
::J
-4
.J
2
a Actual Data
lenoth (mm)
-Computed Dcrta
Appendix Figure E.3.Weight/length relationship for juvenile sockeye
salmon collected at the Talkeetna (upper figure)
and Flathorn (lower figure)stationary outmigrant
traps,1985.
E-5
TALKEETNA STATION 1985
a«M L.ENaTH/WIJOHT NXlM:I-.ONU
2.4
2.2
2.0
1.8
.....1Atil-f 1.4
t.2
~1.0
0.8
0.8
0.4
0.2
0.0
30
looe y "-1:5.31 +3.88 100.I
r 2 ..0.89
a
50
~(mm)
eo 70
2.8
2.4
2.2
2.0
I.e
.....1.8til
~
~1.4
~1.2•
~1.0
0.8
0.8
0.4
0.2
0.0
30
FLATHORN STATION 1 985
a«JW:L..ENG'Tlot/WE)N:OM3~
101le'1 =-12.76 +3.23 10lle I
r 2 =0.84
D
a
-40
a Actual Data
a
70 -.
I
Appendix Figure E.4.Weight/length relationship for juvenile chum
salmon collected at the Talkeetna (upper figure)
and Flathorn (lower figure)stationary outmigrant
traps.1985.
E-6
r"""
a a a a a
R n •
37 311 41
'--'9th (mm)
a
TALKEETNA STATION 1985
.-...ca~MQM~
a
a a a a a
33
1013,'J ..-5.06 +1.0i.~10 13,I
,2 "0.04
1.0
0.11
0.8
0.7
.......0.8.....
i 0.5•~0.4
0..1
.0.2
0.1
0.0
31
....
.....
-
FLATHORN STATION 1 985
PINK:L.£HaTHI'WEJOHT M:~
10Qe'J =-9.50 +2.31 10Qe I
r 2 =0.42
~
1.0
0.8
0.1lI
0.7
.....
~0.1lI
(i'iUl'"i..0.5•
~0.4
0..1
0.2
0.1
0.0
31 37 41 43
a
45
a Actual Data
lan9th (mm)
-Comput.d Data
E-7-
Appendix Figure E.5.Weight/length relationship for juvenile pink
salmon collected at the Talkeetna (upper figure)
and Flathorn (lower figure)stationary outmigrant
traps,1985.
Appendix Figure E.6.Chinook salmon (age 0+)cumulative catch and
biomass recorded at Talkeetna (upper figure)and
Flathorn (lower figure)stations,1985.
E-8
-
1985 TALKEETNA CHINOOK 1 +
X CUUULATTVECATCH AND BIOUASS
......
tOO
'aD
80
~70
j eo:J
:;I;
:J 50u
g <40u
It:
~30
20
to
0
E MAV E JUNE E JULY E AUG E SEPT E OCT
SAMPLING PERIOD
D BIOUASS INDEX +CATCH
1985 FLATHORN CHINOOK 1 +
x CUt.lULATIVE CATCH AND BIOMASS
SAMPLINC PERIOD
o BIOUASS INDEX +CATCH
....
-
100
90
80
~70
j 60::;)
:::!'
::;)50u
!Zw 040u
It:wa...30
20
10
0
E .JUNE E .JULY E AUG E SEPT E OCT
.-
Appendix Figure E.7.Chinook salman (age 1+)cumulative catch and
biomass recorded at Talkeetna (upper figure)and
Flathorn (lower figure)stations,1985 .
E-9
too
gO
/!IO
~70
~80::>
;l
::>500g.w0
It:.....a..30
20
10
a
100
90
/!I 0
~70
g 60::>
;l
::>500
!Zw -400c::wa..;50
20
10
0
TALKEETNA COHO 0+
"CUUULATlVE CATCH AND BIOUASS
E JUNE E JULY E AUG E SEPT
SAUPUNG PERIOD
c BIOMASS INDEX +CATCH
1985 FLATHORN COHO 0+
"CUUULATlVE CATCH AND BIOUASS
EOCT
IIOli
I
-
-
E JUNE E JULY E AUG E SEPT E OCT
Appendix Figure E.8.
SAMPUNG PERIOD
c BIOt.4ASS INDEX +CATCH
Coho salmon (age 0+)cumulative catch and biomass
recorded at Talkeetna (upper figure)arrd Flathorn
(lower figure)stations,1985.
E-I0 -
-
TALKEETNA COHO 1 +
~CUt.CULlTtVE CATCH AND BIDt.CA5S
EOCT
CATCH
......~.....,.--oy----..---.----.----.---r-._..-..-,...---l
E SEPT
100
gO
~
80
~70
eo:>
2:>SOu
~040Ua:w-Q.JO
20
to
0
E t.CAY E JUNE E JULY E AUG
SAMPUNG PER10D
c BIOMASS INDEX +
.....1985 FLATHORN COHO 1+
~CUt.CULATM CATCH AND BIOMASS
1+--r----r---.----r-----,.----r·---.------,.----1t
E OCT
100
90
80
~70
j 80:J
:::l:>50u
~
UJ 040~
W
Q.JO
20
10
0
E JUNE E JULY E AUC E SEPT
r-
!
-
SAMPLING PERIOD
a BIOUASS INDEX +CATCH
Appendix Figure E.g.Coho salmon (age 1+and 2+)cumulative catch and
biomass recorded at Talkeetna (upper figure)and
Flathorn (lower figure)stations,1985.
E-ll
1985 TALKEETNA SOCKEYE 0+
:It CUt.AULA1lVE CUC'"'AND BIOt.AASStoo
gO
80
§70
eo:J
:I
:J ~O0
~400
Ir
W
Q..30
20
to
0
E JUNE E JULY E AUG E SEPT E OCT
SAt.APUNG PERIOD
c BIOt.AASS INDEX +CATCH
1985 FLATHORN SOCKEYE 0+
~CUt.AULAT'lVE CATCH AND BIO~S
-.
i
-
too
90
60
~70
3 eo
::J
:::li
::J 500
~w -400
0:
W
Q..30
20
10
a I
E JUNE E JULY E AUG E SEPT E OCT
-
SAMPUNG PERIOD
c BIOMASS INDEX +CATCH
Appendix Figure £.10.Sockeye salmon (age 0+)cumulative catch and
biomass recorded at Talkeetna (upper figure)and
Flathorn (lower figure)stations t 1985.
£-12
-
-,,
.-
tOO
gO
80
~70
~eo::>
2
::J 50u
~w -40U
0:
W
lk.30
20
10
0
E lolAY
1985 TALKEETNA SOCKEYE 1 +
:It CUlolULATIVE CATCH AND BIOUASS
E JUNE E JULY E AUC E SEPT E OCT
SAMPlINC PERIOD
[]BIOMASS INDEX +CATCH
,-
1985 FLATHORN SOCKEYE 1+
,.CUlolULATIV'E CATCH AND BIOMASS
100
90
eo
§70
80:J
:::!'
::J sou
8 40u
ll::
W
CL.30
20
10
0
E JUNE E JULY E AUC E SEPT E OCT
SAMPUNC PERIOD
[]BIOa.lASS INDEX +CATCH
Appendix Figure E.l1.Sockeye salmon (age 1+)cumulative catch and
biomass recorded at Talkeetna (upper figure)and
Flathorn (lower figure)stations,1985.
E-13
-
-
~I
-
EOCT
20
TALKEETNA CHUM
x CUUULATTVE CATCH AND BIOMASS
100
90
eo
~70
::J 60~
::Ju
~50
w
U
It:040w
ll.
,'50
20
10
E JUNE E JULY E ...UG E SEPT
SAMPUNG PERIOD
CATCHcBIO".ASS INOEX +
FLATHORN CHUM
x CUUULATTVE CATCH AND BIOUASS
100
gO
eo
~70
j
:J 60~
:J
U
~50
w
U
It:040w
ll.
E JUNE E JULY E AUG E SEPT
SAMPUNG PERIOD
o 810".AS5 INDEX +CATCH
1 a .f----,.-----,----r----r--..---~r__-_r--,....-__j
E OCT
Appendix Figure E.12.Chum salmon fry cumulative catch and biomass
recorded at Talkeetna (upper figure)and Flathorn
(lower figure)stations,1985.
E-14
-
TALKEETNA PINK
%CUUU~TIVE CATCH AND BIOI,(ASS
100
gO
eo
~70
80:J
::I!
:J 50u
8 40U
D:
IAJa...:so
20
10
o·
E JUNE E JULY E AUG E SEPT EOCT
SAMPUNG PERIOD
a BJOYASS INDEX +CATCH
FLATHORN PINK
.%CUl,4ULATlVECATCH AND BIOMASS
-
100
90
60
~70
g 80:J
::I!
:J 500
~
IAJ 4O~wa...30
20
10
a
E JUNE E JULY E AUG E SEPT
SAYPUNG PERIOD
a BfOt.4ASS INDEX +CATCH
E aCT
Appendix Figure E.13.Pink salmon fry cumulative catch and biomass
recorded at Talkeetna (upper figure)and Flathorn
(lower figure)stations,1985.
E-15