HomeMy WebLinkAboutAPA318Sub last 7.10
Phase 1 Final Draft Report
Re .sident Fisb lnvesligafioo
on the Lower Susilna River
ADF&G I Su Hydro 1981
ALASKA POWER AUTHORITY
SUSITNA HYDROELECTRIC PROJECT
Sublask 7.10
Phase 1 Final Drafl Report
Re~ident Fisb lnvesligalioa
on tbe Lower Susitna River
ADF&G I Su Hydro 1981
by
Alaska Department of Fish and Game
Susitna Hydro Aquatic Studies
2207 Spenard Road
Anchorage, Alaska 99503
for
Acres American Incorporated
Liberty Bank Building, Main at Court
Buffalo, New York 14202
TABLE OF CONTENTS
Title
1. SU~IMARY ..........................................•............ E-1-1
2. INTRODUCTION................................................ E-2-1
3. SPECIES REPORTS -RESIDENT FISH............................. E-3-1
3.1 RAINBOW TROUT.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3-1
3.1.1 Abstract........................................ E-3-1
3.1.2 Introduction.................................... E-3-2
3 .1. 3 Methods......................................... E-3-3
3.1.4 Results and Discussion.......................... E-3-4
3.1.4.1 Distribution and
Relative Abundance...................... E-3-4
3.1.4.2 Age, Length, and Sex
Composition............................. E-3-8
3.1.4.3 Tagging and Recapture.................... E-3-11
3.2 ARCTIC GRAYLING........................................ E-3-16
3.2.1 Abstract ....................................... .
3.2.2 Introduction ................................... .
3.2.3 Methods ......................................... .
3.2.4 Results and Discussion ......................... .
3.2.4.1 Distribution and
RelatiVe Abundance ........... ~ ....... i ••
3.2.4.2 Age, Length, and Sex
Composition ............................ .
3.2.4.3 Spawning ................................ .
3.2.4.4 Tagging and Recapture ................... .
E-3-16
E-3-16
E-3-18
E-3-18
E-3-18
E-3-19
E-3-24
E-3-27
3. 3 BURBOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3-29
3.3.1 Abstract ....................................... .
3.3.2 Introduction ................................... .
3.3-.3 Methods .......... ·-· ........ -.................... .
3.3.4 Results and Discussion ......................... .
3.3.4.1 Distribution and
Relative Abundance ..................... .
3.3.4.2 Age, Length, and Sex
Composition ............................ .
3.3.4.3 Spawning ................................ .
3.3.4.4 Tagging and Recapture ................... .
E-3-29
E-3-29
E-3-31
E-3-31
E-3-31
E-3-38
E-3-42
E-3-45
Page
3.4 ROUND WHITEFISH........................................ E-3-47
3 . 4 . 1 Abstract . . . . . . ~ . . . . . . . oil .. • •• Ill •• 6 Cl • • Ito Q • • e • • ~ • ,., ID e ••
3. 4 . 2 In trod u c t; 0 n e ,., •• e • Cl •••• 0 " ••• Cl • Cl •• " Cl • 0 ••••• oO • II •••
3 • 4 • 3 Methods • e Q •••• " " • 0 ~ 0 II •••• e •••••• Ill • 1!1 a •• Cl ... ,., .. G •• e Cl
3.4.4 Results and Discussion ..••.•.....•.....•........
3.4.4.1 Distribution and
E-3-47
E-3-47
E-3-48
E-3-49
Relative Abundance...................... E-3-49
3.4.4.2 Age, Length, and Sex
Composition............................. E-3-51
3.4.4.3 Spawning ••••••••••.. <II. e .. e ........... e ••••••
3.4.4.4 Tagging and Recapture.................... E-3-55
3.5 HUMPBACK WHITEFISH..................................... E-3-59
3. 5 . 1 Abstract e o • o ... ., ••• ~~~ •• ~~~~ llo • o • o .., ••• Cl .. e. .a a .... o •• .., o •••••
3 0 5 e 2 I n trod u c t i 0 n 0 •••••• Ill • e e • II • e •• e 1!1 ••••• () ..... (l • G • 0 ••
3. 5. 3 Methods Ci ".e .......... e ••••• "' •• ., ... " •• "'. Cl •••• eo Cl Q ••
3.5.4 Results and Discussion .......•..•.•.............
3.5.4.1 Distribution and
Relative Abundance ••..•...••............
3.5.4.2 Age, Length, and Sex
Composition. Q •• o • llil Cl "' ....... C'l ••• e • oil o • IIJ o •• El "' o
3 C1 5 e 4 II 3 spawn; n g 11 .;. • e e e e I! G e oe 0 4> e e CO e e ~ Q e e e e e e Ito e 0 to e e e
3.5.4.4 Tagging and Recapture ............•.......
E-3-59
E-3-59
E-3-62
E-3-63
E-3-64
E-3-71
E-3-71
E-3-71
3.6 BERING CISCO........................................... E-3-75
3. 6 ., 1 Abstract 1151 Cl ............... o •• -o Cl • e ....... " ••• "' • €1 ..... .
3.6.2 Introduction ....... "" ... " ...... €1. o .............. ..
3. 6. 3 Methods ... " " ............ e •• " ., ••• ., ., ••••• ~~~~ • Q •••• (l • o
3.6.4 Results and Discussion .....•...............•••..
3.6.4.1 Distribution and
Relative Abundance ...•..................
3.6.4.2 Age, Length, and Sex
Composition .....•........... o ... .., o ••• Cl •••
3.6.4.3 Spawning ........................ o.es•••••CI
3.6.4.4 Tagging and Recapture ....••.....•........
3.7 LONGNOSE SUCKER .......•........•.•...•.................
3.7.1 Abstract .......•......... ~ .•..•.•....•........•.
3 • 7 . 2 I n trod u c t i on . . . 8 • .. • • • • • " • • • • • • "' • o .. • • • e • o • • • • o • ., •
3 . 7 • 3 Methods . . . .. . & •• ,. o • • • • • • • • o .. • • • • • Cl • ,. • .. • e .., • .. • • • e • o.
3.7.4 Results and Discussion .....•.....•..............
E-3-75
E-3-76
E-3-77
E-3-77
E-3-77
E-3-79
E-3-84
E-3-91
E-3-95
E-3-95
E-3-95
E-3-97
E-3-97
3.7.4.1 Distribution and
Relative Abundance...................... E-3-97
3.7.4.2 Age, Length, and Sex
Composition............................. E-3-98
3.7.4.3 Tagging and Recapture.................... E-3-103
3.8 DOLLY VARDEN ........•........ ~......................... E-3-107
3 .. 8.1 Abstract ....................................... .
3.8.2 Introduction ................................... .
3.8.3 Methods ............................•............
3.8.4 Results and Discussion ......................... .
3.8.4.1 Distribution and
E-3-107
E-3-107
E-3-108
E-3-108
Relative Abundance...................... E-3-108
3.8.4.2 Length Frequency......................... E-3-112
3.8.4.3 Tagging.................................. E-3-112
3.9 THREESPINE STICKLEBACK................................. E-3-116
3.9.1 Abstract ........................................ .
3.9.2 Introducti·on ................................... .
3.9.3 Methods ......................................... .
3.9.4 Results and Discussion ......................... .
3.9.4.1 Distribution and
E-3-116
E-3-116
E-3-118
E-3-118
Relative Abundance...................... E-3-118
3.9.4.2 Age, Length, and Sex
Composition............................. E-3-121
3.10 COTTIDS................... .......... .. .. ....... .. ..... E-3-123
3.10.1 Abstract ...................................... .
3.10.2 Introduction .................................. .
3.10.3 Methods ....................................... .
3.10.4 Results and Discussion ........................ .
3.10.4.1 Distribution and
E-3-123
E-3-123
E-3-124
E-3-124
Relative Abundance...................... E-3-124
3.10.4.2 Age, Length, and Sex
Composition............................. E-3-127
3.11 ARCTIC LAMPREY ...................................... ;. E-3-129
3 . 11 . 1 Abstract ...................................... .
3.11.2 Introduction .................................. .
3.11.3 Methods ....................................... .
3.11.4 Results and Discussion ........................ .
E-3-129
E-3-129
E-3-131
E-3-131
3.11.4.1 Distribution and
Relative Abundance...................... E-3-131
3.11.4.2 Age, Length, and Sex
Composition............................. E-3-134
3.12 NORTHERN PIKE......................................... E-3-136
3 . 12 . 1 Ab s tract 'il • • • Ill " .. a " "' .. • Q • 4il • "' o • • • • • ., e "' e • • Q a • & • e .. I> o ""
3 " 12 "" 2 In trod u c t ion .. e e •• cr. .... o ••• a •••• ~ .. e •• l!l e ~~~ ... " • "' ... ..
3 . 12 . 3 Methods ................. Ill • " e e • e •••••••• ~~ • o • oil .... .
3.12.4 Results and Discussion ...............•.........
E-3-136
E-3-136
E-3-137
E-3-137
3.12.4.1 Age, Length and Sex
Composition............................. E-3-138
4. LITERATURE CITED............................................. E-4-1
5. ACKNOWLEDGEMENTS. . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E -5-1
Figure E. 2 .1
Figure E.2.2
Figure E.2.3
Figure E.2.4
Figure E.2.5
Figure E.3.1.1
Figure E.3.1.2
F i g u re E • 3 • 1. 3
Figure E.3.1.4
Figure E.3.2.1
Figure E.3.2.2
LIST OF FIGURES
Map of the lower ~usitna River study area
from Cook Inlet to the proposed Devil Canyon
dam site.
Resident and juvenile anadromous study, catch
and effort form, fixed gear, 1980-81.
Resident and juvenile anadromous study, catch
and effort form, mobile gear, 1980-81
Resident and juvenile anadromous study,
biological data form, 1980-81.
Resident and juvenile anadromous study, tag
and recapture form, 1980-81
Percent incidence for rainbow trout captured
at habitat location sites on the Susitna
River between Cook Inlet and Talkietna,
June to September, 1981.
Percent incidence for rainbow trout captured
at habitat location sites on the Susitna
River between Talkeetna and Devil Canyon,
June to September, 1981.
Age and length relationship of rainbow trout
captured at habitat location sites on the
Sus itna River between Cook In 1 et and De vi 1
Canyon, June to October, 1981. The mean
length for each age class is indicated by a
horizontal bar and the range is indicated
by arrows.
Length frequency composition of rainbow trout
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Percent incidence for Arctic grayling captured
at habitat location sites on the Susitna
River between Cook Inlet and Talkeetna, June
to September, 1981.
Percent incidence for Arctic grayling captured
at habitat location sites on the Susitna
River between Talkeetna and Devil Canyon,
June to September, 1981.
Page
E-2-2
E-2-10
E-2-11
E-2-12
E-2-13
E-3-6
E-3-7
E-3-10
E-3-12
E-3-20
E-3-21
Figure E.3.2.3
Figure E.3.2.4
Figure E.3.3.1
Figure E.3.3.2
Figure E.3.3.3
Figure E.3.3.4
Figure E.3.4.1
Figure E.3.4.2
Figure E.3.4.3
Age and length relationship of Arctic grayling
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981. The mean
length for each age class is indicated by
a horizontal bar and the range is indicated
by arrows.
Length frequency composition of Arctic
grayling captured at habitat location sites
on the Susitna River between Cook Inlet
and Devil Canyon, June to October, 1981.
Percent incidence for burbot captured at
habitat location sites on the Susitna River
between Cook Inlet and Talkeetna, June to
September, 1981.
Percent incidence for burbot captured at
habitat location sites on the Susitna
River between Talkeetna and Devil Canyon,
June to September, 1981.
Age and length relationship of burbot
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981. The mean
length for each age class is indicated by a
horizontal bar and the range is indicated
by arrows.
Length frequency composition of burbot cap-
tured at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Percent incidence for round whitefish captured
at habitat location sites on the Susitna
River between Cook Inlet and Talkeetna, June
to September, 1981.
Percent incidence for round whitefish cap-
tured at habitat location sites on the Susitna
River between Talkeetna and Devil Canyon, June
to September, 1981.
Age and length relationship of round whitefish
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981. The mean
length for each age class is indicated by a
horizontal bar and the range is indicated
by arrows.
Page
E-3-23
E-3-25
E-3-35
E-3-37
E-3-40
E-3-41
E-3-50
E-3-52
E-3-54
Figure E.3.4.4
Figure E.3.5.1
Figure E.3.5.2
Figure E.3.5.3
Figure E.3.5.4
Figure E.3.6.1
Figure E.3.6.2
Figure E.3.6.3
F i g u re E. 3 . 6 . 4
Figure E.3.6.5
Length frequency composition of round white-
fish captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Percent incidence for humpback whitefish
captured at habitat location sites on the
Susitna River between Cook Inlet and Tal-
keetna, June to September, 1981.
Percent incidence for humpback whitefish
captured at habitat locations sites on the
Susitna River between Talkeetna and Devil
Canyon, June to September, 1981.
Age and length relationship of humpback white-
fish captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981. The mean length
for each age class is indicated by a horizontal
bar and the range is indicated by arrows.
Length frequency composition of humpback white-
fish captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Age and length relationship of Bering cisco
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981. The mean
length for each age class is indicated by
a horizontal bar and the range is indicated
by arrows.
Length frequency composition of Bering cisco
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Bering cisco spawning area on the Susitna
River at Sunshine, RM 78.0 to Rm 79.0,
October 13, 1981.
Bering cisco spawning area on the Susitna
River at Montana Creek, RM 76.0 to RM 77.5,
October 13, 1981.
Bering cisco spawning area on the Susitna
River at Mainstem West Bank, RM 75.0,
October 13, 1981.
Page
E-3-56
E-3-66
E-3-67
E-3-68
E-3-69
E-3-83
E-3-85
E-3-88
E-3-90
E-3-92
Figure E.3.7.1
Figure E.3.7.2
Figure E. 3. 7. 3
Figure E.3.7.4
Figure E.3.8.1
Figure E.3.8.2
F i g u re E. 3 . 8 . 3
Figure E. 3. 9. 1
Figure E.3.9.2
Figure E.3.9.3
Percent incidence for longnose suckers
captured at habitat location sites on the
Susitna River between Cook Inlet and Tal-
keetna, June to September, 1981.
Percent incidence for longnose suckers
captured at habitat location sites on the
Susitna River between Talkeetna and Devil
Canyon, June to September, 1981.
Age and length relationship of longnose
suckers captured at habitat location sites
on the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981. The
mean length for each age class is indicated
by a horizontal bar and the range is indi-
cated by arrows.
Length frequency composition of longnose
suckers captured at habitat location sites
on the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Percent incidence for Dolly Varden captured
at habitat location sites on the Susitna
River between Cook Inlet and Talkeetna, June
to September, 1981.
Percent incidence for Dolly Varden captured
at habitat location sites on the Susitna
River between Talkeetna and Devil Canyon,
June to September, 1981.
Length frequency composition of Dolly Varden
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Percent incidence for threespine stickleback
captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna,
June to September, 1981.
Percent incidence for threespine stickleback
captured at habitat location sites on the
Susitna River between Ta"lkeetna and Devil
Canyon, June to September, 1981.
Length frequency composition of threesp·i ne
stickleback captured at habitat location
sites on the Susitna River between Cook
Inlet and Devil Canyon, June to October,
1981.
Page
E-3-99
E-3-100
E-3-102
E-3-104
E-3-110
E-3-111
E-3-114
E-3-119
E-3-120
E-3-122
Figure E.3.10.1 Percent incidence for cottids captured at
habitat location sites on the Susitna River
between Cook Inlet and Talkeetna, June to
September, 1981.
Figure E.3.10.2 Percent incidence-for cottirls captured at
habitat location sites on the Susitna River
between Talkeetna and Devil Canyon, June to
September, 1981.
Figure E.3.10.3 Length frequency composition of cottids
captured at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Figure E.3.11.1 Percent incidence of Arctic lamprey captured
at habitat location sites on the Susitna River
between Cook Inlet and Talkeetna, June to
September, 1981.
Figure E.3.11.2 Length frequency composition of Arctic
lamprey captured at habitat 1ocation sites
on the Susitna River between Cook Inlet and
Devi1 Canyon, June to September, 1981.
Page
E-3-125
E-3-126
E-3-128
E-3-133
E-3-135
Table E.2.1
Table E.2.2
Table E.2.3
Table E.2.4
Table E.3.1.1
Table E.3.1.2
Table E.3.1.3
Table E.3.2.1
Table E.3.2.2
Table E.3.2.3
Table E.3.3.1
Table E.3.3.2
LIST OF TABLES
Estuary to Little Willow Creek
Rustic Wilderness to Montana Creek
Mainstem near Parks Highway bridge to
Mainstem below Curry
Mainstem Susitna (opposite Curry) to
Portage Creek
Rainbow trout, age-length frequency
composition at habitat location sites
on the Susitna River between Cook Inlet
and Devil Canyon, June to October, 1981.
Page
E-2-5
E-2-6
E-2-7
E-2-8.
E-3-9
Rainbow trout, summary of sex determination E-3-13
data at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Rainbow trout, summary of tagging data on E-3-14
the.Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Arctic grayling, age-length frequency E-3-22
composition at habitat location sites on
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Arctic grayling, summary of sex determination E-3-26
data at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Arctic grayling, summary of tagging data on E-3-28
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Burbot catch per trot line day, selected E-3-33
fish habitat sites, Cook Inlet to Talkeetna,
November, 1980 to May, 1981.
Burbot catch per trot line day at selected E-3-34
fish habitat sites, Talkeetna to Devil
Canyon, November, 1980 to May, 1981.
Table E.3.3.3
Table E.3.3.4
Table E.3.3.5
Table E.3.4.1
Table E.3.4.2
Table E.3.4.3
Table E.3.5.1
Table E.3.5.2
Table E.3.5.3
Table E.3.5.4
Table E.3.6.1
Table E.3.6.2
Burbot, age-length frequency composition
at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Page
E-3-39
Burbot summary of sex determination data E-3-43
at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Burbot summary of tagging data on the E-3-46
Susitna River between Cook Inlet and
Devil Canyon, May to October, 1981.
Round whitefish, age-length frequency E-3-53
composition at habitat location sites
on the Susitna River between Cook Inlet
and Devil Canyon, June to October, 1981.
Round whitefish, summary of sex determination E-3-57
data at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Round whitefish, summary of tagging data E-3-58
on the Susitna River between Cook Inlet
and Devil Canyon, June to October, 1981.
Humpback whitefish fishwheel catch on the E-3-65
Susitna River at Sunshine Station (RM 79.0),
August to September, 1981.
Humpback whitefish, age-length frequency E-3-70
composition at habitat location sites on
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Humpback whitefish, summary of sex deter-E-3-72
mination data at habitat location sites on
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Humpback whitefish, summary of tagging data E-3:74
on the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Bering Cisco fishwheel catch on the Susitna E-3-78
River at Sunshine Station (RM-79.0), August
to September, 1981.
Bering cisco gill net catch on the Susitna E-3-80
River at Kroto Slough (RM 30.1) and Mainstem
Slough (RM 31.0), September, 1981. .
Table E.3.6.3
Table E.3.6.4
Table E.3.6.5
Table E.3.6.6
Table E.3.6.7
Table E.3.7.1
Table E.3.7.2
Table E.3.7.3
Table E.3.8.1
Table E.3.8.2
Table E.3.11.1
Page
Bering cisco electrofishing catch on the E-3-81
Susitna River between RM 67.5 and RM 97.9,
September 25 to October 15, 1981.
Bering cisco, age-length frequency campo-E-3-82
sition at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Bering cisco, summary of sex determination E-3-86
data at habitat location sites on the
Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
Bering cisco spawning site evaluation on E-3-89
the Susitna River, October, 1981.
Bering cisco, summary of tagging data on E-3-93
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Longnose sucker, age-length frequency E-3-101
composition at habitat location sites on
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Longnose sucker, summary of sex determination E-3-105
data at habitat location sites on the Susitna
River between Cook Inlet and Devil Canyon,
June to October, 1981.
Longnose sucker, summary of tagging data on E-3-106
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Dolly Varden catch and catch per unit effort E-3-113
(CPUE) by habitat location sites, upper
Indian River and upper Portage Creek, helio
surveys, June to October, 1981.
Dolly Varden, summary of tagging data on E-3-115
the Susitna River between Cook Inlet and
Devil Canyon, June to October, 1981.
Arctic lamprey, catch per unit effort at E-3-132
habitat location sites on the Susitna
River, January to September, 1981.
EA
EB-1
EB-2
EB-3
EB-4
EB-5
EB-6
EB-7
EB-8
EB-9
EB-10
EB-11
LIST OF APPENDIX TABLES
Sampling effort by habitat location, sampling period, and gear
type on the lower Susitna River, 1980-1981.
Rainbow trout, catch per unit effort at habitat location sites on
the lower, Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Arctic grayling, catch per unit effort at habitat location sites
on the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Burbot, catch per unit effort at habitat location sites on the
lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Round whitefish, catch per unit effort at habitat location sites
on the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Humpback whitefish, catch per unit effort at habitat location
sites on the lower Susitna River between Cook Inlet and Devil
Canyon, November, 1980 to October, 1981.
Bering cisco, catch per unit effort at habitat location sites on
the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Longnose sucker, catch per unit effort at habitat location sites
on the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Dolly Varden, catch per unit effort at h~bitat location sites on
the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Threespine stickleback, catch per unit effort at habitat location
sites on the lower Susitna River between Cook Inlet and Devil
Canyon, November, 1980 to October, 1981.
Cottids, catch per unit effort at habitat location sites on the
lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
Arctic lamprey, catch per unit effort at habitat location sites
on the lower Susitna River between Cook Inlet and Devil Canyon,
November, 1980 to October, 1981.
1. SUMMARY
(1) This study was designed to gather information describing the presence,
abundance, geographical and seasonal distribution, age distribution,
length distribution, sex ratio, and movement of resident fish species in
the Susitna River between Cook Inlet and Devil Canyon as part of a
feasibility study regarding the proposed Susitna Hydroelectric project.
(2) Field collection of data on resident fish species took place from
November, 1980 to October, 1981. Sampling gear used included variable
mesh gillnets, minnow traps, trotlines, hook and line, beach seines,
electrofishing units, and dip nets.
(3) Twelve resident species were captured during the course of this study.
(4) Rainbow trout were captured throughout the study area, with the mouths of
tributary streams producing higher catches per unit effort than mainstem
river locations. The mean fork length of the 395 rainbow trout captured
was 285 mm. Fork lengths of rainbow trout in the Cook Inlet to Talkeetna
reach was consistently 20 to 40 mm longer in each age class than those
recorded in the Talkeetna to Devil Canyon reach. The most prevalent age
classes captured were Age III, Age IV and Age V.
(5) Peak catches of Arctic grayling occurred in May and September. Cache
Creek slough, Montana Creek and Portage Creek had the largest catches per
E-1-1
unit effort. The mean fork 1 ength of fish captured was-202 mm and the
most prevalent age classes were Age V and Age VI.
(6) Burbot were captured at 43 of the 44 habitat locations between Alexander
Creek and Portage Creek with peak catch rates recorded in late August and
early September. The mean length of 457 burbot measured was 428 mm. The
most prevalent age classes were Age III, Age V, and Age VIII.
(7) Round whitefish occurred throughout the study area but the more pro-
ductive sites tended to be upstream of Talkeetna. Age IV fish were the
most common and had a mean length of 261 mm.
(8) Humpback whitefish were captured at approximately half the habitat
locations throughout the study area but were generally more abundant at
sites downstream of Talkeetna. The mean fork length of 344 fish measured
was 284 mm. Age IV and Age VI were the most prevalent age classes.
(9) Eight hundred, thirty four Bering cisco were captured at sites ranging
from Kroto Slough to a site just upstream of Ta-lkeetna in the late summer
and early fall. This species was not know to occur in the Susitna River
drainage prior to this study. The mean fork length of measured fish was
332 mm and Age IV was the most prevalent age class. Spawning was
observed at three sites between river mile 74 and mile 79. Peak spawning
occurred during the second week of October.
E-1-2
{10) Longnose suckers occurred throughout the study area. The mean fork
1 ength of 532 suckers measured was 259 mm and the most preva 1 ent age
class was Age VI.
(11) Dolly Varden were captured at sites ranging from Alexander Creek to
Portage Creek with the highest catches per unit effort recorded at the
mouths of tributary streams. The mean fork length was 196 rnm. Dolly
Varden captured in minnow traps on upper Indian River and upper Portage
Creek had a mean fork length of 94 mm.
(12) Threespine stickleback were widespread and abundant in the Susitna River
below Devil Canyon during the early summer~ The catch in minnow traps at
habitat locations generally declined after late June. Threespine stickle-
backs were caught at a site two miles be 1 ow the confluence of Portage
Creek, approximately 50 miles further upriver than previously reported.
The mean total length of fish measured was 79 mm. Three age classes (0+,
I+, II+) were present during the summer.
(13) The slimy sculpin was present at almost all habitat locations between
Cook Inlet and Devil Canyon. The mean total length of 476 fish measured
was 70 mm.
(14) Forty Arctic lamprey were captured at sites in the lower 100 miles of the
Susitna River.
E-1-3
(15) One Age IX female northern pike measuring 715 mm fork length was captured
in Kroto Slough on September 11, 1981. Northern pike are expanding their
range from the Bulchitna Lake area; this is the first record of one
captured in the mainstem Susitna River.
(16) Information obtained to date has described the geographic and seasonal
distribution, relative abundance, length distribution and age distri-
bution of adult residents during the period June through September. The
data on male/female ratios are less complete.
(17) Relatively small numbers of juvenile resident fish were collected in
1980-1981. Sampling scheme bias imposed by gear types and by location of
effort can account for the limited numbers of juvenile residents encoun-
tered. Further seasonal distribution, relative abundance, and biological
information on juvenile residents is needed to evaluate their life
histories.
(18) Spawning sites were located for the round whitefish and Bering cisco.
~1ore information is needed on location of mainstem and slough spawning
sites and on spawning habits and timing for all species. More
information is also needed on the incubation of embryos.
(19) Further information is needed on the winter distribution and habits of
all species.
E-1-4
(20) Although many fish were tagged during this study, there have been few
recaptures to date. As more recaptures are made, the migrations and
movement of the various species can be better described.
E-1-5
2. INTRODUCTION
The lower Susitna River extends 152 River Miles (RM) from Cook Inlet upstream
to the proposed Devil Canyon dam site (Figure E.2.1). The study area for the
1980-81 field work was limited to the mainstem Susitna River, its sloughs and
side channels, and those reaches of tributary streams directly influenced by
Susitna River stage fluctuations. Over its course from Devil Canyon to Cook
Inlet, the Susitna River loses nearly 950 feet of vertical elevation and
undergoes numerous morphological changes.
From Cook Inlet to Talkeetna, the first 98 river miles, the Susitna rises 350
feet in elevation and combines with three major tributaries; the Yentna (RM
30), Talkeetna (R~1 98) and Chulitna (RM 98.5), all glacial rivers. The Cook
Inlet to Talkeetna reach includes the Susitna River Delta, the relatively
stable Susitna Station (RM 29) area, the Delta Islands (RM 40-61), and an
extensively braided area from the Kashwitna-River (RM 61) upstream to Tal-
keetna (RM 97).
Major salmon and resident fish producing tributary streams such as Alexander
Creek, Willow Creek, Deshka River and Montana Creek flow into the Susitna
River in the Cook Inlet to Talkeetna reach. These streams provide a sub-
stantial contribution to Susitna River fish production and account for over
one hundred thousand man days of sport fishing effort annually in their multi-
species fisheries (Mills, 1980).
E-2-1
fT1
I
N
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YENTNA
< z
!::: en ::> en
DEVIL CANYON
• SUNSHINE STAT ION
STATION
-.. -·
11 miles
SCALE
0
Figure E.2.1. Map of the lower Susitna River study area from Cook Inlet to the proposed Devil
Canyon dam site.
17
Above Talkeetna, the Susitna river begins to gain elevation more rapidly as it
enters the foothills of the Talkeetna mountains. The river channel is rela-
tively stable restricted by the surrounding hills. However, numerous islands,
sloughs and braided areas still exist.
Streams tributary to the Susitna River in the Talkeetna.to Devil Canyon reach
include Whiskers Creek, Lane Creek, Fourth of July Creek, Gold Creek, Indian
River and Portage Creek in addition to numerous smaller streams draining the
surrounding hillsides. These streams together with the mainstem Susitna
River, its side channels and sloughs combine to sustain substantial resident
and anadromous fish populations.
Access to the fisheries resources.of the lower Susitna River may be gained by
various means including road, railroad, riverboat, and aircraft.
Prior to the initiation of 1980-81 Susitna Hydroelectric Aquatic Studies,
resident and juvenile anadromous fisheries data describing species compo-
sition, seasonal distribution, relative abundance, migrational movement
patterns and aspects of species life history within the lower Susitna River
study area, consisted of various studies conducted within individual tributary
streams and preliminary Susitna Hydro environmental assessments. Engel and
Watsjold (1978) and Delaney, Hepler and Roth (1981) researched juvenile salmon
populations in Willow Creek and the Deshka River. Barrett (1975a,b~c) and
Riis and Friese (1978), in documents prepared for the United States Fish and
Wildlife Service, reported preliminary environmental assessments of hydro-
electric development on the Susitna River.
E-2-3
For the purposes of this study, the lower Susitna River was divided into two
reporting reaches: Cook Inlet (R~1 0) to Talkeetna (RM 98) and Talkeetna to
Devil Canyon (RM 152.0). Studies were conducted from November, 1980 to
October, 1981. The data collected beginn·ing November, 1980 and extending
through May, 1981 will be reported as winter studies. This time period
included exploratory sampling as well as project development. In June, 1981,
39 specific areas hereafter referred to as habitat locations were selected for
study along the Susitna River from Cook Inlet to Devil Canyon to represent the
available aquatic habitat. Habitat locations consisted of one to three
sampling sites and included many of the areas examined during the winter
studies. Additional areas identified in earlier studies and areas selected to
provide additional representation of unique aquatic habitats were also
included. These areas are referred to as selected fish habitat sites. Tables
E.2.1 to E.2.4 list the 39 habitat locations, 44 sampling sites included
within these, and the corresponding river miles and geographic codes for each.
A sampling scheme was devised whereby each habitat location site would be
examined twice each month using standard fisheries sampling gear such as wire
mesh minnow traps, trotlines, variable mesh gillnets, hook and line, beach
seine, electrofishing units, drift gill nets, dip nets and fish traps.
Appendix Table EA presents a summary of sampling effort by habitat location,
sampling period, and gear type on the lower Susitna River for the 1980-1981
season.
Minnow traps, trotlines and set variable mesh gill nets were considered 11 fixed
gear 11 and fished for two consecutive 18 to 24 hour periods. The remaining
gear types including electrofishing, beach seine, hook and line and drift
E-2-4
Table E.2.1. Estuary to Little Willow Creek
Habitat Location Site R.M. Geographic Location
Alexander Creek A 10.1 15N 07W 06 DCA
Alexander Creek B 10.1+2.0 16N 07W 32 CCB
Alexander Creek c 10.1+4.0 16N 07W 30 ACO
Anderson Creek 23.8 17N 07W 29 ODD
Kroto Slough Mouth 30.1 17N 07W 01 DBC
Mainstem Susitna Slough 31.0+2. 5 17N 06W OS CAB
Mid Kroto Slough 36.3 18N 06W 16 BBC
Deshka River A 40.6 19N 06\~ 35 BOA
Deshka River B 40. 6+1. 0 19N 06W 26 BCB
Deshka River c 40.6+3.5 19N 06W 14 BCA
Delta Islands 44.0 19N OSW 19 ACB
Little Willow Creek 50.5 20N 05W 27 AAD
Total -12
E-2-5
Table E.2.2. Rustic Wilderness to Montana Creek
Habitat Location Site R.M. Geographic Location
Rustic Wilderness 58.1 21N OSW 25 CBD
Kashwitna River 61.0 21N 05W 13 AAA
Caswell Creek 63.0 21N 04W 06 BOD
Slough West Bank 65.6 22N 05W 27 ADC
Sheep Creek Slough 66.1 22N 04W 30 BAS
Goose Creek 1 72.0 23N 04W 31 BBC
Goose Creek 2 73.1 23N 04W 30 BBB
Mainstem Susitna West Bank 74.4 23N a svJ 13 ceo
Montana Creek n .a 23N 04W 07 ABA
Total ~ 9
E-2-6
Table E.2.3. Mainstem near Parks Highway bridge to mainstem below Curry
Habitat Location Site R.M. Geogra~hic Location
Mainstem 1 84.0 24N 05~1 10 DCC
Sunshine Creek 85.7 24N OSW 14 AAB
Birch Creek Slough 88.4 25N OSW 25 DCC
Birch Creek 89.2 25N 05W 25 ABO
Cache Creek Slough 95.5 26N OSW 35 ADC
Cache Creek 96.0 26N OSW 26 DCB
Whiskers Creek Slough 101.2 26N 05W 03 ADB
Whiskers Creek 101.4 26N OSW 03 AAC
Slough 6A 112.3 28N OSW 13 CAC
Lane Creek 113.6 28N OSW 12 ADD
Mainstem 2 114.4 28N 04W 06 CAB
Total -11
E-2-7
Table E.2.4. Mainstem Susitna (opposite Curry) to Portage Creek
Habitat location
Mainstem Susitna -Curry
Susitna Side Channel
Mainstem Susitna -Gravel Bar
Slough 8A
Fourth of July Creek
Slough 10
Slough 11
Mainstem Susitna Gold Creek
Indian River
Slough 20
Mainstem Susitna -Is1and
Portage Creek
Site
E-2-8
R.~t
120.7
121.6
123.8
125.3
131.1
133.8
135.3
136.9
138.6
140.1
146.9
148.8
Geographic Location
29N 04W 10 BCD
29N 04W 11 BBB
30N 04~~ 26 DOD
30N 03W 30 BCD
30N 03W 03 DAC
31N 03W 36 AAC
31N 02W 19 DOD
31N 02W 17 CDA
31N 02W 09 CDA
31N 02W 11 BBC
32N OlW 27 DBC
32N OlW 25 COB
Total -12
gillnet were considered mobile gear and were utilized as river condition or
gear availability permitted. Fish traps were experimental in nature and were
only fished occasionally. Catch by species and effort by gear type was
recorded on field catch data collection forms illustrated in Figures E.2.2 and
E.2.3.
Biological data including date and location of catch, fork length, sex, and a
scale or otolith sample for age analysis were collected from a subsample of
all fish captured. The biological data collection form is illustrated in
F i gu re E. 2 • 4 •
All resident fish species over 200 mm in length and in good condition after
capture were tagged using Flay anchor tags inserted well above the lateral
line just posterior of the dorsal fin. Data collected at the time of tagging
included: tag number, date, species, fork length, method of capture and
location. Information recorded at the time of recapture included: tag
number, date, method of capture, location and the fate of the fish. The tag
and recapture form is illustrated in Figure E.2.5.
Winter field studi.es were carried out by three crews of three biologists each
operating from lodging facilities at Alexander Creek, Deshka River, Montana
Creek, Talkeetna and Gold Creek. Transportation was provided by pickup truck,
snow machine, helicopter, and fixed-wing ski plane.
The winter studies were considered to be an exploratory phase of the Resident
and Juvenile Anadromous project. A large number of sites were visited in an
E-2-9
ITl
I
N
I
1--'
0
Q
I
File No. 03-81-7.10-2.71 Page 1 ol __ _
SUSITNA HYDRO RESIDENT & JUVENILE ANADROMOUS STUDY
FIXED GEAR CATCH DATA AJ 81-01
Habitat Sampling River
Location ----------Site Mile -----
__ __} __ _/ _ _/ __ _/_
DATE: Gear Set------Gear Pulled------Colleolor(a) ---------------------
TIME CATCH -8PECIE6 CODE NO, REMARKS
q "" ···-••• pulled total
1
GEAR TYPE CODE
' glllnet 1
~-minnow '"P 6
trol line tO
burbol ut tO•
~ ..
f 5 BPECIE6 CODE
burbol 680
'(' ... '0"-
r 10
1---1---
!-------1---
figure E.2.2.
--1-----
--1-
--
Resident and juvenile anadromous study, catch
and effort form, fixed ~ear, 1980-1981.
chinook Ot -4 tO
c;hlnook 1 t • t 1
<;hum lllmon
coho Ot
i:UilQ 1t
coho 2 t
410
.(30
.(31
.(32
eullld 1110
doll)l VIrden 1130
IIUV!IIIg 010
humpbooek
whll•ll•ll 602
lake lroul 660
iongnou euoker 820
pink u1n1o11 · HO
velnbow lrou! 11-4 t
round whlt&llell ouo
emellleulllchon 011
aock•V• o" .o120
•ock•lf• H 421
Ulok!eb .. ok 060
!!All COOlE
sr!lflolal 1
IIIIa 2
1111111• 3
olher 4
(ap•ollv In remarka)
[Tl
I
N
I .......
.......
File No. 03-8 t-7.10-2.74
SUSITNA t·IYDRO RESIDENT & JUVENILE ANADROMOUS STUDY
MOBILE GEAR CATCH DATA RJ 81-04
Page 1 of_
Habitat
Location ----------
Sampling Rlvur
Site -------Milo ___ _ __ _j __ _J _ _j __ _J_
DATE: Gaar But _______ _ Goer Pullud ------Colluctor(a) ----------------------
• .,;\ ~ff ~ ,..'II
~ .~-· ro+
.., ~ .,"\ ./ .. T I M E CATCH -SPECIES OODE NO.
lu i I ~· .l ... pull ad toteiM R E M A A K 8
-1-------1---------<----1---
-------------------------------• 1---------' ~ --1-1-------------f....,......c
--i'--------1-
c_ ------------< <
-------------------· --
--
------
----------------
1-------1-------------
-<-< -----:-.-----1,~ --------
• lolal lime lor beaoh ••Ina haul, aleolroahook and ho,o~ l Una
' ...
GEAR TYPE CODE BPEOIE8 CODE BAIT TYPE CODE
drill glllnat 1a burbot auo humpba~k •llllelleh 002 artificial 1
alaouoahock 2 ohinook Ot 410 lake tro4i 660 lllh 2
beach ulna 3 chinook t ._ -40 lononoaa aucker 920 •oo• $
hook l line Q churn aalmon 400 plnl< ulmon ... 0 other • olher (lpecUr) 0 ooho Of 430 rainbow trout 041
ooho 1• 431 round whllellah 1108
ooho a• 43ll ameiiJiulachon 011
coUld 910 aockara 0 • uo
dollv varden 1130 •ockava H 4:11
o•a~llng 810 lllchlabeck OliO
Figure E.2.3 Resident and juvenile anadromous study, catch and effort form, mobile gear, 1980-1981.
File Na. _...-o.-;3,....-a.-1 .... -... 7.;..;. ,_o_-.-2.;.;..7.;;..2 _ Paof:_ot_
SUSITNA HYDRO RESIDENT & JUVENILE ANADROMOUS STUDY
BIOLOGICAL DATA RJ 81-02
Habitat
L.ocat•on --'-----
Sam~lin~ River
Site -----MUe ---__ _/..:_ _ _/ _ _/ __ _/~
Date{s) Col'ectac -------CoDec:torb) ____________ _
, I I I I I I I I I 2fl I I
2i I ? 27 -~'
3j l I ,.-·· I I 2~ r~ .. I
"' i I I ~~ I I I I I
sl I I ~q I I I I
. sl I I I I I F3~ I I I I
71 l I ~~ J I j I
sj I I l ~ I I l
s! ! I I I I P-4 : I I I I
~ol I I I I I I I ~5 I I I
t't 1j i I l I I p~ I I I
~2j I I I I I 37j I I I I
~31 I I I I 3~ I
~41 i I I 3~ I
~5/ l I I I "cl I I I
~61 I I "1 I I I I I
rt71 I I 4~ I I I
~81 ~~ I I I I
~91 I I I l ~ I I
!::zoj I I I I ~~ I I
i21j I I I f4e' I 1
221 f47 I ·I I
~:31 I l I ~~ I I
f24j I I I ~s I
Fz~ I I I ~q I I I
I
GE.I.A TYPE CODE SPECIES CODE
beach ... -.... 3 burt>at 590 humpbael< ... nif81"111h 582
burbal set 10&., chinook o+ 410 lak• trout 550
dril'i~ 1a ehinoot 1+ 4n longnoae •o.cl<« g21)
eloietYCoshoc:k 2 em... •• -.. ... 450 pinlt aalmon 440
gilnet 1 coho 0+ .£3Q ra nbo• trout 5.41
hook .l-11 coho 1-+ 431 round whi'leiish 586
mitvlow trq 5 coho 2+ 432 amelf./eu•cholil· S11
trol inc 10 COit11d 1no •oc:itey& 0+ 420
dolly •••d-53CI occlt•y• 1+ 421
Qraying 1!1,0 wnc:klebed; 66t!
Figure £.2.4. Resident and juvenile anadromous study, biological
data form, 1980-1981.
E-2-12
1"1'1
I
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I ...... w
File No. 03-81-7.10-2.73
SUSITNA HYDRO RESIDENT & JUVENILE ANADROMOUS STUDY
TAG AND RECAPTURE OAT A RJ 81-03
T A a a IN 0 D A T A R E c A p T U R E DATA
~"o~ go or
co do dale IPIIOI .. l~nglh oodo mm) Habitat 1-ooellon dale ",'!t•:gur •ro\h o odo mm •tabltlt location
-
--
---1---•
I
--
-.--
1--------
1-~
·' --1-
--
1-
1--.-r----------
1-
,,
8PECIE8 CODE OEAR TYPE CODE RECAPTURE COIJE
burbol 1100 boaoh oolno 3 811 H~dro alall t
doll)' verden 1130 hurbol eol lOa AOFlQ (other) I
ore~llnu 1110 drill glllnel .. 8porl Flehormon· 3
humpback whllolloh 082 oloctro•hook II
rainbow trout IIH gllhlol 1
round wbllelleh 066 hook & Uno II
loko lfoul 1100 minnow hap a
lrot llno 10
, ...... d
Figure E.2,5. Resident Qnd juvenile anadromous study, ta~ and recapture form, 1980-1981.
attempt to achieve wide coverage and identify representative aquatic habitat.
This period from November, 1980 to May, 1981 was also used to obtain project
equipment and hire and train project personnel.
A total of eleven biologists, seven from the Resident and Juvenile Anadromous
' project and four from the Aquatic Habitat project operated as four distinct
crews to accomplish the objectives of the summer {June -September) field
program. The crews were based in semi -permanent tent camps located at the
Yentna, Sunshine and Talkeetna fishwheel stations and at Gold Creek. Each
crew utilized a pickup truck, outboard jet powered riverboat and helicopter
for transportation and provided their own logistical support {i.e. gas, food).
The number of habitat location sites assigned to each crew consisted of:
Yentna-12, Sunshine~9, Talkeetna-11, and Gold Creek-12.
E-2-14
3. SPECIES REPORTS -RESIDENT FISH
3.1 RAINBOW TROUT
3 .1.1 Abstract
During November, 1980, through October, 1981, 395 rainbow trout, Salmo
gairdneri Richardson, were collected from 40 habitat locations along the
Susitna River from Alexander Creek (R.M. 10.1) to Portage Creek (R.M. 148.8).
Peak rainbow trout catche-s occurred from late June to early July and in
September. The largest catch per unit efforts for rainbow trout were made at
Lane Creek (R.M. 113.6), Mainstem 2 (R.M. 114.4), and Anderson Creek (R.M.
23.8). Habitat locations at the mouths of tributary streams produced higher
catches per unit effort than did rna i nstem river 1 ocati ons. Fork 1 engths
ranged from 48 mm to 541 mm with a mean length of 285 rnm. Lengths of rainbow
trout in the Cook Inlet to Talkeetna reach were consistently 20-40 mm 1 arger
in each age class than those recorded in the Talkeetna to Devil Canyon reach.
The mQst prevalent age classes captured were Age III, Age IV, and Age V. The
sex of 71 rain bow trout were determined of which, 30.9 percent were rna 1 e and
69.1 percent were female. Two hundred and eleven rainbow trout were tagged
with Flay anchor tags and released in the area of their capture. Data
call ected from seven recaptures indicate that movements of the rainbow trout
observed to date appear to be random.
E-3-1
3.1.2 Introduction
The original native range of the rainbow trout Salmo gairdneri Richardson
extended along the west coast of North America from near Curdad, Mexico to the
Kuskokwim River drainage in western Alaska.
Native rainbow trout inhabit the coastal rivers of Southeast Alaska, the
Copper River, Bristol Bay drainages,.and the lower Kuskokwim River as well as
streams of the Kenai Peninsula and the Susitna River. In addition to their
native range, rainbow trout have been introduced into numerous lakes, ponds
and gravel pits in the Fairbanks region.
Portage Creek, a clearwater tributary of the Susitna River at RM 148.8,
supports the northernmost population of rainbow trout in the Susitna drainage
and also represents one of the northernmost boundaries of the native range in
North America.
Native stream dwelling rainbow trout under clear water conditions appear blue
green on the back, silver grading to white on the sides and underbelly, and
have a red lateral band. They tend to be heavily spotted on the body, dorsal
fin and tail.
The general life history of rainbow trout has been extensively discussed by
Morrow (1980) and Scott and Crossman (1973). Basically, there are three life
history variations of rainbow trout: resident stream, resident lake, and
anadromous steelhead. Rainbows are basically spring spawners, with the
majority of spawning occurring from mid April to late June. Spawning takes
E-3-2
place only in streams, and typically in a riffle with a bed of fine gravel
located upstream of a pool. Preferred spawning temperatures are between
10°-13°C, but in Alaska spawning may occur at temperatures as low as 5.5°C
after spring breakup.
Sexual maturity is attained as early as age II for males or as late as age VI
in females. In general, maturity occurs at age III to V, with males usually
maturing a year earlier than females.
Rainbow trout feed on a variety of invertebrates, preferring the larvae and
adult forms of dipteran insects, and crustaceans such as Gammarus sp. Adult
fishes are opportunistic and will feed on salmon eggs, snails, and other fish
species.
Rainbow trout are one of the most prized and sought after sport fishes in
North America. Susitna River sport harvest and effort levels have increased
steadily over the past five years. Mills (1980) estimates that over 12,000
rainbow trout were harvested from the Susitna River and its primary tribu-
taries in 1980, accounting for 17 percent of the state's harvest of native
rainbow trout.
3.1.3 Methods
Rainbow trout were collected in the summer and fall of 1981 with variable mesh
gill nets (four 7.5 ft. panels with 1 to 2-1/2 inch stretch mesh (1/2 to 1-1/4 11
bar mesh), fishwheels, boat mounted electrofishing units, hook and line, trot
lines and minnow traps.
E-3-3
All fish captured were measured to fork length in millimeters (mm). Sex was
determined by necropsy or by discharge of sex products during handling. Age
determinations were made by scale analysis. Upon recovery from the effects of
capture, fish in good condition were tagged with Flay anchor tags and
released.
3.1.4 Results and Discussion
3.1.4.1 Distribution and Relative Abundance
Rainbow trout were collected at seven tributary and four mainstem habitat
location sites along the Susitna River from Alexander Creek (RM 10.1) to
Slough 10 (RM 133.8) during November, 1980 to May, 1981. Appendix Table EB-1
lists rainbow trout catch rate by various sampling gear types and locations.
This species did not appear consistently in catches from any of the locations
sampled, however low densities of rainbow trout appear to be present through-
out the winter months.
Rainbow trout were captured at a total of 91 percent of the habitat locations
in the Cook Inlet to Devil Canyon reach, from Alexander Creek (RM 10.1) to
Portage Creek (RM 148.8) during June to September 1981. The percent incidence
of catches in the Cook Inlet to Ta"l keetna and the Talkeetna to Devil Canyon
reaches was 81 percent and 100 percent, respectively.
E-3-4
In the Cook Inlet to Talkeetna reach, the percent incidence of catches at
habitat location sites ranged from a high of 50 percent during the first two
weeks of September, to a low of 7 percent during the first two weeks of August
(Figure E.3.1.1).
The incidence of rainbow trout in habitat locations sampled remained in the 20
to 30 percent range from the first of June through July 30 and again from
August 15 to August 30. The low percentage of incidence which occurred from
August 1 to August 14 was probably due to coinciding high water levels and the
resultant ineffectiveness of the sampling gear.
Habitat 1 ocati ons associ a ted with tributary streams produced higher catches
per unit effort than did the mainstem locations. Consistent catches of
rainbow trout were recorded at Anderson Creek, Alexander Creek, and Deshka
River habitat location sites. Catch per gillnet at Anderson Creek rose to 9.0
in late September, while highs of 1.0 and 0.8 fish per trot line were reached
at Alexander Creek and the Deshka River, respectively, during the last two
weeks of August.
In the Talkeetna to Devil Canyon reach, the percent incidence of rainbow trout
catches at habitat locations ranged.from 77 percent during late June and again
in early September to a low of 18 percent during early August (Figure
E. 3. 1. 2). The June peak is probab 1 y due to the presence and movements of
spawning fish, while the high in September reflects movement downstream into
winter habitat. The low percent incidence in early August, the same as in the
Cook Inlet to Talkeetna reach, was probably caused by high, flood stage waters
and associated factors.
E-3-5
tTl
I w
I en
, ________________________ _
60 RAINBOW TROUT -
p
E -
R c
E L!O N -
T
I -
N c
I 20 0 -
E
N c -
E
0 I I I I I r I I I
JUNE JULY AUGUST SEPTEMBER
~
figure E.3.1 ,1. Percent incidence of rainbow trout captured· at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna, June to September, 1981.
tTl
I w
I
'-1
80 RAINBOW TROUT -
p -
E
A 60 c
E
-r-----I
N -
T
I 40 -
N c -I
0
E 20 -
N c
E -
0 I -~ I I . l I I -I I
JUNE JULY AUGUST SEPTEMBER
---------------------_______ ___.
Figure.£.3.1.2. Percent incidence of rainbow trout captured at habitat location sites on the Susitna
River between Talkeetna· and Devil Canyon, June to September, 1981.
The most consistent catches of rainbow trout occurred at tributary mouth and
slough habitat locations.
Catches per gillnet ranged from 0.0 to 6.0 per day at tr'ibutary and slough
locations, with the high of 6.0 rainbows per day recorded at Whiskers Creek
Slough during late June. Hook and line catches produced highs of 2.0 and 7.0
rainbows per hour at Portage Creek and Whiskers Slough, respectively. High
catches per unit effort at Whiskers Creek and Whiskers Slough in June are
believed to be the result of rainbows passing through this area on their way
to spawning in Whiskers Creek.
3.1.4.2 Age, Length, and Sex Composition
One hundred eighty four Susitna River rainbow trout collected by fishwheel,
trot line, electrofishing and hook and line from Cook Inlet to Devil Canyon
were aged using scale analysis. Age class distribution data should be
reviewed with the understanding that the sampling design and gear was not
equally efficient for all age classes. This holds true for all species
discussed in this report. Table E.3.1.1 illustrates that age classes III, IV
and V made up a majority of the fish. at 30.8 percent, 32.0 percent and 19.0
percent of the total sample respectively. The age class composition was
similar for each reporting reach of the lower Susitna River. Rainbow trout in
the age sample ranged from age I to age VII.
Figure E.3.1.3 illustrates the mean length and the range of lengths found for
each age class of lower Susitna River rainbow trout.
E-3-8
. .,
I w
I
lD
Table E.3.1.1. Rainbow trout, age -length frequency composition at habitat location sites on the Susitna River
between Cook Inlet and Devil Canyon, June to October. 1981
Cook Inlet to Talkeetna Talkeetna to Devil Canlon Cook Inlet to Devil Canlon
Total No. Mean Range of Total No. Mean Range of Total No. Mean Range of
Age of fish Length Length of fish Length Length of fish Length Length
(Years) Sampled (nun) (mm) Sampled ( mrri) (mm) Sampled (nun) (mm)
0
I 3 150 128-172 3 150 128-172
II 9 226 160-228 5 184 163-195 14 211 160-228
III 27 264 203-335 30 248 198-350 57 256 198-350
IV 28 323 255-400 31 302 . 225-415 59 312 225-415
v 17 388 209-480 18 361 297-440 35 374 297-480
VI 6 481 341-545 7 382 286-449 13 428 286-545
VII 2 507 505-510 1 378 378 3 464 378-510
VII I
IX
X
TOTALS 92 317 128-545 92 296 163-449 184 307 128-545
600-RAINBOW TROUT
F t
0 -t
A t
K
L 1.!00-t
E t N
G -
T
I'T'J H I w .f. I
I-' 200-0
I t ' N
M -
M
0 ,---1 I I I I I
0 ·1 2 3 1.! 5 6 7 8
AGE IN YEARS
... ..
F i gu re E. 3 . 1 . 3 . Age and length relationship for rainbow trout captured at habitat location sites on the
Susitna River between Cook Inlet and Devil Canyon, June to October, .1981. The mean
len~th for each age class is indicated by a horizontal bar and the ranae is indicated
by arrows. · ·
Fork 1 ength measurements to the nearest mi 11 imeter (mm) were taken from a
total of 273 rainbow trout collected during June to September, 1981. Lengths
ranged from 48mm to 541mm with a mean of 285mm. Seventy five percent of the
recorded lengths were in the 220-375mm range (Figure E.3.1.4), which includes,
age III, IV and V rainbow.
Lengths of rainbow trout in the Cook Inlet to Talkeetna reach were consis-
tently 20-40mm larger in each age class than the lengths recorded in the
Talkeetna to Devil Canyon reach.
Sex was determined on a total of 71 rainbow trout, indicating 22 males (30.9
percent) and 49 females (69.1 percent). Males comprised 21~2 percent of the
Age III fishes for which sexual determinations were made and 33.3 percent of
the Age IV fish (Table E.3.1.2).
3.1.4.3 Tagging and Recapture
Two hundred eleven rainbow trout were tagged with Floy anchor tags and
released in the area of their capture (Table E.3.1.3). Seven tagged rainbows
were subsequently recaptured from 2 to 52 days after tagging. The range of
travel by these fish was from 0 to 34.5 miles.
Four of the tagged rainbow trout were recaptured at or within one quarter
(0.25) mile of their· tagging site. Of the three remaining recaptures, one,
tagged at Slough 10 (RM 133.8) on July 6, was recaptured August 3rd, 2.8 miles
down the Susitna River at the mouth of Sherman Creek (RM 131.0). Another
E-3-11
25
20 >-u z
w 15
=>
0 w
(Y 10
LL
fT1
I ~ w
I
I-' 5 N
0
I
0
I
55
I
1 1 0
I
165
I
220 275
LENG-fH
I
330
Cmm)
I
385
I
440
n
I
495
I
550
Figure E.3.1.4. Length frequency composition of rainbow trout captured at habitat location
sites on the Susitna River between Cook Inlet and Devil Canyon, June to
October, 1981 .
Age
(Years}
0
I
II
III
fTl IV
I .
w
I ...... w v
VI
VII
VI II
IX
X
TOTALS
Table £.3.1.2. Summary of sex determination data for rainbow trout on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Cani:on Total
Male Female Total Male female Total Male female
No. No. No. No. No. No. No. No.
(%) (%} Sexed (%} (%} Sexed (%} {%)
2 1 3 1 1 2 3 2
(66. 7) (33.3} (50.0) (50.0) (60.0) (40.0)
2 12 . 14 4 4 8 6 16
(14.3) (85. 7) (50.0) (50.0) (27.2) {72.8)
5 3 8 3 13 16 8 16
(62.5) (37.5) (18 .8) (81.2) (33.3) ( 66.7)
1 4 5 2 9 11 3 13
(20.0) (80.0) (18. 2) (81.8) (18.8) (81.2)
1 1 2 1 1 2 1
(50.0) (50.0) (100.0) (66.7) (33.3)
1 1 1
(100. 0) (100.0)
11 21 32 11 28 39 22 49
(34.4) (65.6) (28.2) (71.8) (30.9) (69.1)
Total
No.
Sexed
5
22
24
16
3
1
71
Table E.3.1.3. Summary of the rainbow trout tagging data on the Susitna River
between Cook Inlet and Devil Canyon, May to October, 1981.
NUMBER OF FISH TAGGED
. Tagging Habitat Se 1 ected fish
Susitna River Reach Periods Fishwheel Locations Habitats
Sunshine
Cook Inlet to Talkeetna 5/l-5/15 10 2
6/1-'6/15 1
7/l-7/15 3 1
7/16-7/31 4
8/1-8/15 1 1
8/16-8/31 3 6
9/1-9/15 16 3
9/16-9/30 13 18 3
10/l-10/15 6 28
IT1 Subtotal 32 52 35 I w
I
I-' ..p.
Talkeetna
Talkeetna to Devil Canyon 6/l-6/15 12
6/16-6/30 12
7/l-7/15 9 1
7/16-7/31 3
8/l-8/15 3
8/16-8/31 23
9/l-9/15 2 10
9/16-9/30 15
10/1-10/15 2
Subtotal 2 87 3
TOTALS 34 139 38
Total
12
1
4
4
2
9
19
34
34
119
12
12
10
3
3
23
12
15
2
92
211
rainbow trout, tagged May 10 at the mouth of Caswell Creek (RM 63.0), was
recaptured May 20 near the mouth of Goose Creek at River Mile 72.0. The final
fish, tagged at Cache Creek Slough (RM 95.5) on May 6, was recaptured May 17
at the mouth of Kashwitna River (RM 61.0), a movement of 34.5 river miles
downstream.
E-3-15
3.2 ARCTIC GRAYLING
3. 2.1 Abstract
From February to October, 1981, 498 Arctic grayling, Thymallus arcticus
Pallus, were captured on the lower Susitna River. Arctic grayling were
collected at 29 habitat locations between Alexander Creek (R.M. 10.1) and
Portage Creek (R.M. 148.8). Peak grayling catches occurred during May and
September. The largest catch per unit efforts for grayling were made at Cache
Creek Slough (R.M. 95.5), Montana Creek (R.M. 77.0}, and Portage Creek (R.M.
148.8).
The mean fork length for all fish sampled was 202 mm. The most prevalent age
classes captured were Age V and Age VI. The sex of 57 Arctic grayling was
determined and of these, 37 percent were male and 63 percent were female.
Three hundred one Arctic grayling were tagged with Flay anchor tags. Of the
three recaptures made to date, two Arctic grayling tagged in early May at the
mouth of the Deshka River (R .. M. 40.6) migrated upstream and were recaptured
in late May and mid-September respectively at the mouths of tributary streams
9.9 miles and 32.5 miles from the initial point of capture.
3.2.2 Introduction
The distribution of the Arctic grayling Thymallus arcticus Pallas is
hol arctic, encompassing much of northwestern North America and northeastern
Siberia (Scott and Crossman 1973). In Alaska, native populations of Arctic
grayling are found in freshwater drainages throughout interior and Arctic
E-3-16
Alaska and on the Alaska Peninsula south to approximately Port Heiden (ADF&G
et al. 1978). Large numbers of grayling inhabit the Susitna River and its
clearwater tributary systems i.e. Alexander Creek, Deshka River, Willow Creek,
Montana Creek and Portage Creek.
Adult Arctic grayling have a strikingly large dorsal fin, small mouth, and
fine teeth in both jaws. Juveniles can be distinguished by the presence of
narrow, vertically elongated parr marks.
Grayling are freshwater residents which are largely found in clear, cold
streams, and lakes (Scott and Crossman 1973). Silt laden glacial systems,
such as the Susitna River, are believed to support fewer graylings year round;
however, such systems are believed to provide essential migratory channels and
over wintering habitat (ADF&G et al. 1978). The Arctic grayling is charac-
terized by Reed (1964), as a migratory species. During spring breakup, from
April to June, adults migrate from ice-covered lakes and large rivers into
clear gravel-bottomed tributaries to spawn U~orrow 1980). Arctic grayling
reach sexual maturity in Alaska, at Age II to VII years and are capable of
spawning several times during their 1 ife time. After spawning, the adults
move away from the spawning areas to spend the rest of the summer feeding on
aquatic and terrestrial insects taken from the aquatic drift (Vascotto 1970).
A downstream migration back to over\'Jintering areas in large rivers and deep
lakes occurs in late August to mid-September (Pease 1974}.
The Arctic grayling is one of the most important sport fishes of Alaska and
northern Canada. Twenty percent of the estimated 69,462 grayling harvested in
E-3-17
southcentral Alaska in 1980 were taken in Alexander Creek, the Deshka River,
and the other Sus itna River drainages a 1 ong the Parks Highway between ~~Ji 11 ow
and the Parks Highway bridge (Mills 1980). Grayling are also utilized by sub-
sistence fishermen in some areas for dog food and personal consumption.
3.2.3 Methods
Arctic grayling were captured in the Susitna River from the mouth of Alexander
Creek (R.M. 10.1) to the mouth of Portage Creek (R.M. 148.8) just below Devil
Canyon, from February to October of 1981. Set and drift gi 11 nets, hook and
line, trot lines, boat mounted electrofishing units, beach seines, and minnow
traps were used to collect samples of Arctic grayling.
Each fish captured was measured for fork 1 ength in mi 11 imeters. Age was
determined by scale analysis. Uninjured fish were tagged with numbered Floy
anchor tags and released. All dead and seriously injured fish were dissected
to determine sex and sexual maturity.
3.2.4 Results and Discussion
3.2.4.1 Distribution and Relative Abundance
Arctic grayling were first captured and observed at R.M. 93.5, one mile
southwest of the head of Birch Creek Slough, on February 19, 1981. Grayling
were gi 11 netted under the ice infrequently throughout the winter months.
Gill net catches of adult grayling increased sharply from May 1 to 15 at the
mouths of the Deshka River (R.~1. 40.6) and Cache Creek Slough (R.M. 95.5).
E-3-18
After May 15 catches declined at all habitat locations on the Susitna River
between Cook Inlet and Devil Canyon, however the incidence of grayling,
principally juvenile and immature Arctic grayling ranged from 10 to 20 percent
of the 44 habitat location sites sampled during each two week period
throughout the summer months (Figure E.3.2.1 and E.3.2.2). In Septer1'1ber,
catches of adult grayling at tributary mouthes increased. Utilizing set gill
net~, hook and line, and a boat mounted electroshocking unit, relatively large
numbers of Arctic grayling were located on the Susitna Riv~r in September at
Kashwitna River (R.M. 61.0), Montana Creek (R.M. 77 .0), Birch Creek Slough
(R.M. 88.4), Lane Creek (R.M. 113.6), Indian River (R.M. 138.6) and Portage
Creek (R.M. 148.8) (Appendix Tables EB-2).
3.2.4.2 Age, Length, and Sex Composition
Age determinations were made on 274 Arctic grayling caught on the Susitna
River between Alexander Creek (R.M. 10.1) and Portage Creek (R.M. 148.8).
These fish ranged in age from Age 0+ to Age X. The most prevalent age classes
captured were Age V (17.9%) and Age VI (23.4%) (Table E.3.2.1).
Figure E.3.2.3 illustrates the mean length and range of lengths for each age
class of lower Susitna River Arctic grayling. The Age V Arctic grayling had
an average fork length of 318 mm (range 270 -370 mm) and the Age VI averaged
342 mm (range 311-369 mm). The largest grayling captured and analyzed for
age composition was 450 mm in fork length at Age VII.
E-3-19
fT1
I w
I
N
0
------------·------··----·-----··---·---·--·------·----.. --·---··---·-·-------------------
p
E
R c
60 ARCTIC GRAYLING
E l!O N
T
I
N c r 0 20
E
N c
E
.------
o ........-~-~---.-----...--~--·...-----1---.------+-----.=i ·-·-r --~--r-_,____,___t -J.-----.--.-1 ----~---·l
JUNE JULY AUGUST SEPTEMBER
figure E.3.2. l. Percent incidence of Arctic grayling captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna, June to September, 1981.
t~ w
I
N
1--'
--. ----------. --·---·-~--------------·----·
50 -ARCTIC GRAYLING
-
p -
E -
A 4:0 c
-
-
E -
N -
T -
-1
I 30 -
N -
c -
I -
0 -
E 20 -
N -c -
E -
-
10 I I r l I I I I
JUNE JULY AUGUST SEPTEMBER
----------------------------~-----ll
Figure E.3.2.2. Percent incidence of Arctic grayling captured at habitat location sites on the
Susitna River between Talkeetna and Devil Canyon, June to September. 1981.
Age
(Years)
0
I
II
III
IV
I'Tl v I w
I
1'.)
1'.) VI
VII
VI II
IX
X
TOTALS
Table E.3.2.1. Arctic grayling, age-length frequency composition on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Canton Coof Inlet to Devil
Total No. Mean Ra-nge of Total No. "Mean Range of Total No. Mean
of fish length length of fish length length of fish length
Sampled (rum) (uun) Sampled {mm) (mm) Sampled (mm).
5 90 84-95 5 90
1 105 105 9 134 119-180 10 131
5 176 158-192 13 189 172-214 18 186
19 227 206-255 10 244 214-176 29 233
23 283 246-330 16 297 254-337 39 289
35 320 290-370 14 312 270-355 49 318
62 341 311-365 2 367 364-369 64 342
38 369 335-450 1 382 382 39 369
17 392 346-420 17 392
3 406 405-406 3 406
1 426 426 1 426
209 320 84-426 65 252 119-382 274 304
Can~on
Range of
length
(mm)
84-95
105-180
158-214
206-276
246-337
270-370
311-369
335-450
346-420
405-406
426
84-426
rr1
I w
I
I'U w
600 ARCTIC GRAYLING
·F
0
R
K t
L L!OO i t
E t t ! ' -N t !
G ~ T t ' H -' 200 1 I t l N -
M l
M
0 I I ,---r-I I I I
0 1 2 3 1-! 5 6 7 8 9 10 1 1
AGE IN YEARS
Figure E.3.2.3. Age and length relationship for Arctic prdy 1 111~ captured at habitat location sites
on the Susitna River between Cook Inlet and u~vil Canyon, Junu ... October8 1981.
The mean length for each age class is indicated by a horizontal bar and the range
is indicated by arrows.
Figure E.3.2.4 illustrates the size frequency distribution of all Arctic gray-
1 ing collected. The fork lengths of the 498 fish that were captured ranged
from 41mm to 450mm with a mean length of 202.2mm.
The sex of 57 Arctic grayling was determined and of these, 37 percent were
males and 63 percent were females. Among the two most abundant age classes in
this sample, age VI and age VII, females comprised 73.3 percent and 21.1
percent of the f1sh (Table E.3.2.2).
3.2.4.3 Spawning
Arctic grayling begin their spawning migration in the Susitna River in late
April. A substantial increase in grayling catches by gill net was noted at
the mouths of the Deshka River and Cache Creek between May 1 to May 15th.
Necropsies showed most of the fish were sexually mature, however, manipulation
of the fishes abdominal cavities produced no milt or eggs so the fish were not
fully ripe.
No evidence of Arctic grayling spawning was collected at any sampling
locations between Cook Inlet and Devil Canyon during the 1981 season.
Consequently, we can only speculate that the adult Arctic grayling from the
Susitna River migrate into non-glacial tributaries to spawn some time in late
April or May.
E-3-24
>-u z w
:::)
0
w
fr::
LL
IT!
I
VJ ~ I
N
U'l
25
20
15
10
5
0
I
0
I
45
I
90
I
135
n
I
1 80 225
LENGTH
I
270
Cmm)
I
315
I
360
I
405
I
450
figure E.3.2.4. length frequency composition of Arctic graylin~ captured at habitat location sites
on the Susitna River between Cook Inlet and Devil Canyon, June to October, 1981.
3.2.4.4 Tag~ing and Recapture
A tag and recapture study was initiated to try to monitor seasonal movements
and migrations of Arctic grayling: Three hundred one Arctic grayling were
tagged with numbered Flay anchor tags between Cook Inlet and Devil Canyon.
Table E.3.2.3 summarizes the lower river tagging data by reach. To date, only
three tagged grayling have been recaptured. Two of these tagged in early May
migrated upstream from the Deshka River mouth, 9.9 miles and 32.5 m·iles
respectively.
The first was recaptured approximately two weeks after tagging at Little
Willow Creek near the Parks Highway. The second fish was recaptured in
September in the vicinity of Goose Creek. The third fish was tagged and
recaptured on the same day in early October with an electroshocking unit. It
traveled downstream a distance of 1.5 miles from Sunshine Camp to Montana
Creek. With this last fish, it is difficult to determine whether it was
migration downstream or if it was disoriented after being shocked.
E-3-27
TaL.t jE.3.~.!L Mn .. 'tic ~·AyHll!;h sw.~uaty (JJ .!aggltl~ data u11 tin:; Just ..... Q Ri\.c,
between Cook Inlet and De vi 1 Canyon, June to October, 1981.
NUMBER OF FISH TAGGED
Tagging Habitat Selected Fish
Susitna River Reach Periods Fishwheel locations Habitats
Sunshine
133a Cook Inlet to Talkeetna 5/1-.5/15 2
9/1-9/15 8
9/16-9/30 7 15 16
10/1-10/15 12 59b
Subtotal 15 160 77
Talkeetna
;J;flkeetna to Devils Canyon 6/16-6/30 2
I w
I 7/1-7/15 1 . N
(X)
8/16-8/31 2 5
9/1-9/15 1 25
9/16-9/30 6
10/1-10/15 7
Subtotal 1 36 12
TOTAL 16 196 89
: Two tags recaptured -See discussion in text.
One tag recaptured -See discussion in text.
Total
135
8
38
71
252
2
1
7
26
6
7
49
301
3.3 BURBOT
3.3.1 Abstract
During November, 1980 through October, 1981, 562 burbot, Lata lata, L. were
collected in the lower Susitna River. Burbot were captured at 43 habitat
locations and 17 selected fish habitat sites between Alexander Creek (R.M.
10.1) and Portage Creek (R.M. 148.8).
Ninety-five percent of all burbot captured at these sites were collected on
baited trotlines. Peak burbot catch rates occurred in late August and early
September. The mainstem site location opposite Curry at R.M. 120.7 and the
mainstem site located 0.25 miles upstream of Parks Highway bridge (R.M. 84.0)
produced the highest catch per unit effort. The mean length of 457 burbot
measured was 428 mm. Otoliths call ected from 120 burbot were used for age
determination. The most prevalent age classes were Age III, Age V, and Age
VII I. One hundred and eight burbot were ex ami ned for sex, 48 percent were
males and 52 percent were females. Two hundred and forty burbot were tagged
with Flay anchor tags and 63 were tagged using Disc dangler tags to monitor
burbot movements in the lower Susitna River.
3.3.2 Introduction
Burbot, Lata lata Linnaeus, known also as lawyer, ling cod, lush, and mud
shark, are the only members of the cod family (Gadidae) which live in fresh
water. Their distribution is circumpolar in the northern hemisphere being
found in all suitable fresh water habitats in continental Eurasia and North
E-3-29
America southward to approx·imately 40° N (Scott and Crossman, 1973). In
Alaska, burbot are found in the Copper and Susitna rivers, Bristol Bay drain-
ages and throughout the Interior, and Arctic (Mclean and Delaney, 1978).
Burbot are elongate, robust and nearly rounded anteriorly while tapering
posteriorally with caudal fin flared out and rounded. The mouth is terminal
with the upper jaw reaching to just below the eye. A single barbel hangs from
the chin. Coloration on the dorsal side ranges from a blotchy yellow to dark
olive green while the ventral parts are pale yellow or white (Chen, 1969,
Morrow, 1980).
In Alaska, burbot mature between Age III and VI and may live a total of 15 to
20 years. Spawning occurs as early as mid December and may extend through
April, taking place at night under the ice in moderately shallow water over a
substrate of sand or gravel. Female burbot can deposit up to 1 million eggs.
Depending on the temperature, incubation time ranges from 30 to 70 days
(Morrow, 1980).
Little is known concerning the movements or migration of burbot, although
burbot have been observed migrating during spawning and feeding periods
(MacCrimmon, 1959). Burbot are a nocturnal bottom feeding fish. Young burbot
(Age I-II) prefer insect larvae {Hanson & Qudri, 1979), while adults will feed
on whatever is available but prefer small fish {Hewson, 1955).
Burbot support a limited sport fishery in the lower Susitna River although
most are harvested incidentally to salmon and rainbow trout. The Sport Fish
E-3-30
Statewide Harvest Survey (Mills, 1980) estimated that about 550 burbot were
harvested out of the Susitna River in 1980.
3.3.3 Methods
Burbot were collected from November, 1980 to September, 1981 with baited
trotlines, minnow traps, variable mesh gillnets (four 7.5 foot panels of 1 to
2~1/2 inch stretch mesh) and boat mounted electrofishing units. Since over 95
percent of all burbot were captured on baited trotlines only the results of
this method of capture will be used to reflect abundance.
All burbot captured were measured for total length .. All burbot uninjured by
the sampling gear were initially tagged with Flay anchor tags and with disk
dangler tags late in the season. Otoliths were dissected from a representa-
tive sample of captured burbot for age determination. Sex was determined by
necropsy.
3.3.4 Results and Discussion
3.3.4.1 Distribution and Relative Abundance
From November, 1980 through May, 1981, burbot were captured by various
sampling gear placed in the Susitna River from a total of 43 habitat locations
and 17 selected fish habitat sites from the mouth of Alexander Creek (RM 10.1)
and to the mouth of Portage Creek (R.M. 148.8).
E-3-31
Habitat locations and selected fish habitat sites downstream of Talkeetna,
particularly the mouth of the Deshka River (RM 40.6), the mouth of Alexander
Creek (RM 10.1), and four mainstem sites located at river mile 10.0, 43.4,
61.0 and 84.0, yielded the highest catch rates (Table E.3.3.1 and Appendix
Table EB-3).
Burbot were occasionally encountered in habitat locations or selected sites
located upstream of Talkeetna during the winter and those catches were made
exclusively at mainstem sites (Table E.3.3.2 and Appendix Table EB-3). The
mainstem site opposite Curry at RM 120.7 recorded a catch rate of 0.5 per trot
line day, the highest of all sites above Talkeetna.
The distribution of burbot in the Cook Inlet to Talkeetna reach as indicated
by the percentage of habitat location sites recording catches of burbot by any
gear type~ appears to increase as the summer progresses (Figure E.3.3.1). As
Appendix Table EB-3 illustrates, burbot catch rates remained low and varied
through June and July at most habitat locations with the notable exception of
a mainstem location at RM 84.0. This location; comprised of a large, stable,
eddy, 1 ocated just upstream of the Parks Highway bridge recorded the most
consistent catches of burbot throughout the year. During August and
September, catch rates generally increased and the percentage of habitat
locations recording catches of burbot rose to a maximum of 88 percent for the
first two weeks of September. In addition to the mainstem location at RM 84.0
burbot were most abundant at the mouth of the Deshka River ( RM 40.6), the
mouth of Alexander Creek (RM 10.1) and the mouth of Birch Creek Slough (RM
88.4).
E-3-32
Table E.3.3.1. Burbot catch per trotline day at selected fish habitat sites
on the Susitna River between Cook Inlet and Talkeetna,
November 1980 to May 1981.
River Burbot per trot 1 ine day
Mile Nov. Dec. Jan. Feb. Mar. ~ May
10.0 0.0 1.7
43.4 0.6
60.0 0.0
61.0 0.1 0.5
93.5 0.1 0.0
E-3-33
Table E.3.3.2. Burbot catch per trotline day at selected fish habitat sites
on the Susitna River between Talkeetna and Devil Canyon,
November 1980 to May 1981.
River Burbot per trot line day
Mile Nov. Dec. Jan. Feb. Mar. ~ May -
100.2 0.0 0.1
121.0 0.0
127.1 0.0 0.0
127.8 0.0
131.0 0.0 0.0
131.4 0.0
133.6 0.0 0.0
134.5 0.0 0.0
135.3 _0.0
136.1 0.0
136.7 0.0 0.2 0.0 0.0
142.7 0.7 0.7
E-3-34
rr1
I w
I w
<.11
100 BURBOT -
-p
E 80 R -
c
E -
N 60 T -
I -
N c l!O -
I
0 -
E
N 20 -c
E -
0 I I I t I I I I I
JUNE JULY AUGUST SEPTEMBER
I
figure E.3.3. 1. Percent incidence of burbot captured at habitat location sites on the Susitna River
between Cook Inlet and Talkeetna, June to September, 1981.
The incidence of burbot catches in the Talkeetna to Devil Canyon reach
decreased steadily from early June until mid July when only mainstem sites at
river miles 120.7, 123.8, and 146.9 were producing catches. After July 16th,
the percentage of habitat location-sites recording catches sharply increased
and sloughs, creek mouths, and mainstem sites were all recording catches of
burbot (Figure E.3.3.2).
The catch per unit effort from June to September varied from 0 to 3.0 burbot
per trot line day. Throughout the reach upstream of Talkeetna, the mainstem
site 2 miles below Portage Creek (RM 146.9) and a mainstem site at (RM 114.4)
were the most productive while Slough 11 (RM 135.3) and the mouth of Whiskers
Creek (RM 101.4) recorded the lowest catches (Appendix Table EB-3).
At no time during this period of sampling did a stream mouth site show any
consistent catch per unit effort except for Lane Creek (RM 113.5) in late
August and September. Lane Creek is a clear cold tributary that flowed
straight into the Susitna River, until the last two weeks of August, when the
creek mouth changed course and began flowing into a slough channel of the
Sus itna River. After this the catch per unit effort increased and stayed
fairly consistent until the end of September (Appendix Table EB-3).
Small but consistent catches of juvenile burbot were recorded at the mouth of
the Deshka River and the mouth of Alexander Creek during late August and
September (Appendix Table EB-3). Juvenile burbot were occasionally found at
six other locations from Cook Inlet to Devil Canyon during this study.
E-3-36
IT1
I w
I w
""'-~
80 BUABOT -
p -
E
A 60 c
. -
E N -
T
I L!O -
N c -I
0
E 20 -N c
E -
0 I I I -r I I I I I
JUNE JULI AUGUST SEPTEMBER
figure E.3,3.2. Percent incidence of burbot captured at habitat location sites ·an the Susitna River
between Talkeetna and Devil Canyon, June to September, 1981.
Electrofishing surveys designed to locate adult salmon and whitefish and
conducted during August, September and October of 1981, succeeded in locating
burbot in mainstem and slough channels of the Susitna River from RM 43.5 to RM
100.0 (Appendix Table EB-3). Catch rates varied from 0.0 to 12.8 burbot per
hour but as these surveys were not designed to reflect relative abundance of
burbot and the results can only be used to further document the distribution.
3.3.4.2 Age, Length, and Sex Composition
Otoliths were removed and analyzed from 120 burbot captured in the Susitna
River from Cook Inlet to Devil Canyon for age determination. Age classes IV,
V and VIII made up the majority of burbot, comprising 14 percent, 22 percent
and 12.5 percent respectively (Table E.3.3.3). Of the burbot used for age
determination Age IV averaged 407 mm (range 303-520 mm), Age V averaged 439 mm
(range 365-620 mm), and Age VI II averaged 559 mm (range 465-647 mm). The
range of lengths for the age classes of burbot sampled on the lower Susitna
River are similar to those found in studies conducted by Chen {1969) and
Hewson (1955).
Figure E.3.3.3 illustrates the mean length and range of lengths for each age
class of burbot caught on the lower Susitna River.
Length determination was made for a total of 457 burbot collected from Cook
Inlet to Devil Canyon during the summer of 1981. Burbot 400-450 mm occurred
most frequently in the catches. The mean length of burbot encountered was 428
mm and the range was from 55 mm to 900 mm (Figure E.3.3.4).
E-3-38
Age
(Years)
0
I
II
III
JTl IV I w
I w v ~
VI
VII
VIII
IX
X
XI
XII
XI II
XIV
TOTAL
Table E.3.3.3. Burbot, age-length frequency composition on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Can*on Cook Inlet to Devil
Total No. Mean Range of Total No. Mean cange of Total No. Mean
of fish length length of fish Length length of fish Length
Sampled (mm) (mm) Sampled (mm) (mm) Sampled (mm)
5 99 85-115 5 99
5 189 168-205 1 110 6 175
1 180 1 180
6 333 248-400 6 333
16 412 303-520 1 330 17 407
22 432 365-550 4 478 390-620 26 439
10 487 381-600 4 479 386-575 14 485
11 529 407-635 3 566 510-600 14 537
12 570 465-647 3 516 468-600 15 559
3 635 556-680 3 635
3 554 456-650 3 554
2 615 609-611 2 615
5 685 512-815 5 685
2 745 590;..900 2 745
1 804 1 804
104 16 120
Can~ on
Range of
length
(nun)
85-115
168-205
238-400
303-520
365-620
381-575
407-614
465-647
556-668
456=650
609-620
512-815
590-900
rr1
I w
I +:>
0
1000 BURBOT
t
t
750
L t .t. t t E t t ' N t -
G 500 t ~ ~ T ' H t ' I
N 250 '
M
M
0
J I . I I I T-1-lr I I I I I
0 1 2 3 l! 5 6 7 a 9 10 11 12 13 ll! 15
AGE IN YEARS
figure E.3.3.3. Age and length relationship for burbot captured at habitat location sites on the
Susitna River between Cook Inlet and Devil Canyon, June to October. 1981. The
mean len~th for each age class is indicated by a horizontal bar and' the ranoe
is indicated by arrows.
25
20 >-u z w 15
::=)
0 w
~ 10 .
lL
IT1
I w ~ I
+=-5 .......
0 ~~ n~ n~nn
I I I I I I I I I
0 90 180 270 360 450 540 630 720 810
LENGTH Cmm)
Figure E.3.3.4. Length frequency composition of burbot captured at habitat location
sites on the Susitna River between Cook Inlet and Devil Canyon, June
to October, 1981.
n
I
900
Not all burbot examined for age and sex composition contained mature sex
organs. Of the 108 burbot examined~ 48 percent were males and 52 percent were
females. Males comprised 47 percent of the Age IV fish for which sex determi-
nation could be made, and 69 percent and 20 percent for the Age V and Age VIII
fish, respectively (Table E.3.3.4).
3.2.4.3 Spawning
Burbot are known to spawn from mid December to early April. Female burbot
collected in the Susitna River were observed with well developed eggs
beginning in early September. Chen (1969) noticed in his study of burbot in
the Interior of Alaska that gonads began to enlarge in August. On the lower
Susitna River, both sexually ripe and unripe mature burbot were observed from
June through September, indicating non-consecutive spawning for Susitna River
burbot.
No observations of spawning burbot were made during the 1980-1981 season.
However non spawners and spent burbot captured from November to May suggest
that the lower Susitna River burbot may spawn in December and January. Cahn
{1936) and Lindsey {1976) observed burbot migrating into shallow water and
spawning under the ice. Alexander Creek and the Deshka River were the only
study sites at which juvenile burbot were captured consistently.
E-3-42
Age
Years)
0
I
II
III
ITl
I w IV I
.J:::. w
v
VI
VII
VIII
IX
X
Table £.3.3.4. Burbot, summary of sex determination data on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
Cook Inlet to ia1keetna ia1keetna to Devil Can~on
Male Female iotal Male Female Total Male
No. No. No. No. No. · No. No.
Immature Illllla tu re 5 0 Immature ·
Immature Immature 5 Immature Immature 1 Immature
Inunature Immature 1 0 Immature
4 2 6 0 4
8 8 16 0 1 1 8
15 7 22 3 1 4 18
5 5 10 2 2 4 7
3 8 11 2 1 3 5
2 10 12 1 2 3 3
1 2 3 0 1
1 2 3 0 1
Total
Female iotal
No. No.
Illlllature 5
Immature 6
Illlllature 1
2 6
9 17
8 26
7 14
9 14
12 15
2 3
2 3
Age
{Years)
XI
XII
XIII
[Tl
I w
1 XIV
~
Table E.3.3.4. (Continued) Burbot, summary of sex determination data on the Susitna River
between Cook Inlet and Devil Canyon, June to Octobers 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Can~ on Total
Male female Total Male Female Total Male female
No. No. No. No. No. No. No. No.
2 0 2 0 2 0
2 3 5 0 2 3
1 1 2 0 1 1
1 1 0 0 1
Total
No.
2
5
2
l
3.3.4.4 Tagging and Recapture
Two hundred forty burbot were tagged with Flay anchor tags and sixty-three
burbot were tagged with Disc Dangler tags. All burbot tagged were released in
the area of their capture (Table E.3.3.5). No tagged burbot were recaptured
this field season.
E-3-45
ICLIIt: Lo.loJ•'-'• DUJ'LJU!-1 !IUIIYIIDI.Y Ui ii.Q~'!;19!8'!:J Ulli..ll! Uli LIIC Ji..I:IIL!Hi I'IDVCI
between Cook Inlet and Devil Canyon, June to October, 1981.
Tagging Habitat locations Selected Fish Habitats
Susitna River Reach Periods floy Tags Dangler Tag Floy Tag Dangler Tag Totals
Cook Inlet to Talkeetna 6/1-15/81 4 4
6/16-30/81 4 4
7/1-15/81 6 6
7/16-31/81 4 4
8/1-15/81 20 20
8/16-31/81 37 37
9/1-15/81 27 27
9/16-30/81 30 27 1 58
10/1-15/81 18 18 10 10 56
Subtotal 150 45 11 10 216
ITl "(lslkeetna to Devil Canyon 6/1-15/81 5 5
I 6/16-30/81 1 1 ~
0'1 7/1-15/81 6 6
7/16-31/81 8 8
8/1-15/81 16 16
8/16-31/81 17 17
9/1-15/81 8 8
9/16-30/81 15 6 21
10/1-15/81 0 3 2 5
Subtotal 76 6 3 2 87
TOTALS 226 51 14 12 303
3.4 ROUND WHITEFISH
3.4.1 Abstract
Round whitefish, Prospium cyl i ndraceum Pall us were observed throughout the
study area from Anderson Creek (R.M. 23.8) to Portage Creek (R.M. 148.8). The
gillnet catch per unit effort was generally highest in June and Sept~mber and
the most productive sites were Anderson Creek mouth (R.M. 23.8), Slough 10
(R.M. 133.8), Slough 11 (R.M. 135.3), and Portage Creek mouth (R.M. 148.8).
The most prevalent age classes captured were Age III, Age IV, and Age V, with
Age IV the most common. Age IV fish ranged from 214 to 325 mm in fork 1 erigth
with a mean of 261 mm. Approximately 80 percent of the 318 fish captured
during the study fell in the range of 135 to 365 mm. Males constituted 56
percent and females 44 percent of the 45 round whitefish which were examined
to determine their sex. A tot aT of 137 fish were tagged to determine
movement. One fish tagged on September 9, 1981 had moved 20.5 miles upstream
in 23 days before recapture.
3.4.2 Introduction
Round whitefish, Prosopium cylindraceum Pallus, are distributed across all of
,..
Arctic and Interior Alaska. In Southcentral Alaska, their range includes the
Copper, the Kenai, and the Susitna rivers. This species also occurs in the
large rivers draining into Southeast Alaska from British Columbia (Mclean and
Delaney, 1978). Round whitefish are abundant in clearwater streams with
E-3-47
gravel-cobble substrate but are also found in large glacial rivers and lakes.
Round whitefish prefer freshwater and are not found in an estuarine
environment.
Round whitefish are identified by their round cigar-shaped body and small
mouth. Adults may reach a length of 500mm and weight to 8.9 kg {McPhail and
Lindsey, 1970). There are no obvious external differences between the sexes.
Spawning occurs in late September through October over gravel substrate in the
shallows of rivers and the inshore areas of lakes (Furniss, 1974) . This
whitefish matures and spawns at age IV to VII. For Alaskan round whitefish,
consecutive spawning appears to be the rule even in Arctic populations (McCart
et al., 1972). Upstream migrations associated with spawning were observed by
McCart and are probably characteristic. Alaskan subsistence fishermen harvest
round whitefish with gill nets for human consumption and as dog food. Round
whitefish also support limited hook and line and spear sport fisheries.
3.4.3 Methods
Round whitefish were collected during the winter and summer field seasons of
1980-81 with variable mesh gillnets (four 7.5 ft. panels of 1 to 2-1/2 inch
stretch mesh), fishwheels and boat mounted electrofishing units.
Round whitefish were taken in the Susitna River from Anderson Creek (R.M.
23.8) upstream to R.M. 148.8 at Portage Creek.
All fish captured were measured for fork length in millimeters {mm). Where
survival from collection and handling was anticipated, the fish were tagged
E-3-48
with Flay anchor tags and released. Age determinations were made using scale
analysis. Sex was determined by necropsy and by abdominal manipulation to
obtain the discharge of eggs or milt.
3.4.4 Results and Discussion
3.4.4.1 Distribution and Relative Abundance
A total of 318 round whitefish were caught during the course of this study.
Round whitefish were captured at only four habitat locations during w'inter
studies from November, 1980 to May, 1981, all of which were located downstream
of Talkeetna. Small numbers of round whitefish were taken in gillnets set at
the mouth of Sunshine Creek in March and again in gillnets set at the mouths
of the Deshka and Kashwitna rivers and Cache Creek slough during May. The
fish were all captured while moving upstream as indicated by the direction
from which they hit the nets. The presence of round whitefish near the mouths
of tributary streams in March and May after no catches in these same locations
during November through February, indicates a general pattern of movement into
these areas and on into the various tributaries.
Round whitefish were collected at 30.0 percent of the habitat location sites
sampled from Cook Inlet to Talkeetna during the first two weeks of June (Fig.
E.3.4.1). The mouth of Sunshine Creek (R.M. 85.7) recorded the highest catch
rate of al1 gear types; 5.5 fish per gill net night (Appendix Table EB-4).
After June 15 the incidence of round whitefish in habitat location catches
downstream of Talkeetna dropped to between 0.0 and 11.1 percent of location
E-3-49
,...,
I w
I
U'l
0
_.___;'------···---· ·--60 ROUND WHITEFISH -
p
E -
A c
E l!O N -
T
I -
N c
I 20 0 -
E
N c -
E
0 I I I I I I i I
JUNE JULY AUGUST SEPTEMBER
figure E.3.4,1. Percent incidence of roun~ whitefish captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna, June to September. 1981.
I
sites sampled until the last two weeks of September when catch incidence rose
to 45 percent of all sites sampled. During the last two weeks of September
round whitefish were collected at three mainstem sites and six tributary mouth
sites downstream of Talkeetna.
Round whitefish were more consistent in sampling gear catches above Talkeetna
during June through September. The incidence of round whitefish catches
ranged from 17.6 percent to 44.4 percent during June and July then dropped to
0.0 percent in the first two weeks of August (Fig. E.3.4.2). The incidence of
round whitefish in catches remained below 10.0 percent of sites sampled until
the .1 ast two weeks of September when 35.3 percent of sites sampled recorded
catches of round whitefish. The highest and most consistent catch rates were
recorded at sloughs 6A (RM 112.3), 8A (RM 125.3), and 10 (RM 133.8), and the
mouths of both Indian River (RM 138.6) and Portage Creek (RM 148.8) (Appendix
Table EB-4}.
3.4.4.2 Age, Length and Sex Composition
Forty five Susitna River round whitefish from fishwheel, gill net and electro-
fishing catches made from ·cook Inlet to Devil Canyon were aged using scale
analysis. Table E.3.4.1 illustrates that round whitefish analyzed for age
composition ranged from age 0+ to age VIII with age IV being encountered most
often.
Figure E.3.4.3 illustrates the average length and range of lengths for each
age class of Susitna River round whitefish. The fork lengths of age 0+ round
whitefish averaged 89 rrnn (range 73-100 mm), age I averaged 139 mm (range
E-3-51
rn
I w
I
U1
N
60 ROUND WHITEFISH -
p
E -
A c
E L!O N -
T
I -
N c
I 20 0
-
E
N c -
E
0
J I I
JUNE JULY
I I I
AUGUST
I I I
SEPTEMBER
Figure E.3.4.2, Percent incidence of round whitefish captured at habitat location sites on the
Susitna River between Talkeetna and Devil Canyon, June to September~ 1981.
Tab 1 e E. 3. 4. 1. Round whitefish age -length frequency composition at habitat location sites on
the Susitna River between Cook Inlet and Devil Canyon,
June to October, 1981.
CooK Inlet to TalKeetna Ta 1 keetna to Devil Can~ on Cook Inlet to Devil Cani:on
Total No. Mean Range of Total No. Mean imge of Total No. Mean Range of
Age of fish Length Length of fish Length Length of fish Length Length
(Years) Sampled (mm) (mm) Sampled (mm) (mm) Sampled (mm) (mm)
0 4 87 73-100 4 87 73-100
I 2 139 130-148 2 139 130-148
II 3 194 185-205 4 170 126-220 7 181 126-220
Ill 9 229 193-250 10 210 180-245 19 219 180-250
IV 7 281 250-325 27 256 214-320 34 261 214-325
ITl v 8 352 334-360 7 270 251-283 15 314 251-360 I w
I
01 1 w VI 342 342 12 330 317-365 13 331 317-365
VII 6 354 334-367 6 354 334-367
VIII - 1
318 318 1 318 318
IX
X
TOTALS 32 254 73-360 69 265 126-367 101 261 73-367
1'11
I w
I
l11 .p.
500 ROUND WHITEFISH
F
0 l!OO R
K t t t
L t T
E 300
N --G t T t ' H 200 l
I t N
100
M
M
0 -~ I I I I
0 1 2 3 ij 5 6 7 8 9
AGE IN YEARS
figure E.3. 4. 3. Age and length relationship for round whitefish captured at habitat location sites
on the Susitna River bebJeen Cook Inlet and Devil Canyon. June to October, 1981. The
mean length for each age class is indicated by a horizontal bar and the ran!Je is
indicated by arrows.
130-148), Age I I averaged 219 mm (range 180-250 mm), age IV averaged 261 mm
(range 214-325 mm), age V averaged 314 mm (range 251-360 mm), age VI averaged
331 mm (range 317-365 mm), age VII averaged 354 mm (range 334-367 mm) and one
fish of age VIII was 318 mm.
In addition to those rish used for age composition analysis, all round white-
fish collected were measured for fork length in millimeters. Figure
E.3.4.4 illustrates the length frequency distribution for all round whitefish
call ected from June to October. Round whitefish between 242 and 250 mm fork
length occurred most often followed by those from 270 to 278 mm.
The mean fork length of all round whitefish captured from Cook Inlet to
Ta 1 keetna during June through September 1981, was 243 mm with the avera 11
range from 47 to 459. Of the 45 round whitefish examined for sex composition
25 (55.6 percent) were male and 20 (44.4 percent) were female (Table E.3.4.2),
for a male to female ratio of 1.25:1.
3.4.4.3 Tagging and Recapture
One hundred thirty seven round whitefish, captured from Anderson Creek ( R.M.
23.8) to Portage Creek (R.M. 148.8) were tagged with Flay anchor tags during
May through October 1981 and subsequently released in the area of their-
capture (Table E.3.4.3). Only one tagged fish was recaptured in 1981. This
fish was tagged and released on September 9 at the Sunshine Station fishwheel
(R.M. 79) and recaptured on October 2 at R.M. 99.5, one mile north of the
Chulitna River confluence.
E-3-55
rTJ . I
w
I
Ul
0'1
>-u
z
25
20
w 15
=:::)
0 w
~ 10
lL
5
0 )lr-fl-, r-1
I I I I I I i I I
0 45 90 135 180 225 270 315 360 405
LENGTH Cmm)
Figure E.3.4.4. Length frequency composition of roung whitefish captured at habitat
location sites on the Susitna River between Cook Inlet and Devil
Canyon, June to October~ 1981.
I
450
Table E.3.4.2. Round whitefish, sununary of sex determination data at habitat 'location sites on the
Susitna River between Cook Inlet and Devil Canyon,
June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Can~on Total
Male Female Total Male Female Total Male Female Total
Age No. No. No. No. No. No. No. No. No.
(Years) (%) (%) Sexed (%) (%) Sexed {%) (%) Sexed
0
I
II 1 0 1 1 1 2 2 1 3
(100. 0) (0.0) (50.0) (50.0) (66.7) (33.3)
III 3 1 4 2 2 4 5 3 8
(75 .0) (25.0) (50.0) (50.0) (62.5) (37.5)
rr1 IV 0 1 1 10 6 16 10 7 17
I (0.0) (100.0) (62.5) (37.5) (58.8) (41.2) w
I
tTl ...... v 1 3 4 4 0 4 5 3 8
(25.0) (75.0) (100.0) (0.0) (62.5) (37.5)
VI 1 0 1 1 3 4 2 3 5
(100. 0) (0.0) (25.0) (75.0) (40.0) (60 .o)
VII 1 3 4 1 3 4
(25.0) (75.0) (25.0) (75.0)
TOTAL 6 5 11 19 15 34 25 20 45
(54.5) (45.5) (55.9) (44.1) (55.6) (44.4)
Table E.3.4.3. Round whitefish, su~nary of tagging data on the Susitna River between
Cook Inlet and Devil Canyon, May to October, 1981.
NUMBER OF FISH TAGGED
Tagging Habitat Selected fish
Susitna River Reach Periods Fishwheel Locations Habitats
Sunshine
Cook Inlet to Talkeetna 5/1-5/15 6
6/1-6/15 4
6/16-6/30 1
7/l-7/15 3 3
8/16-8/31 5 1
9/1-9/15 1
9/16-9/30 5 12
10/1-10/15 6 42
Subtotal 9
I'T1
26 . 54
I
I
U1 Talkeetna 00
Talkeetna to Devil Canyon 6/1-6/15 1
6/16-6/30 3
7/16-7/31 1
9/l-9/15 10 1
9/16-9/30 15
10/1-10/15 11
Subtotal 10 27 11
TOTAL 19 53 65
Total
6
4
1
6
6
1
17
48
89
7
3
1
11
15
11
48
137
3.5 HUMPBACK WHITEFISHES
3.5.1 Abstract
Three hundred and forty-four humpback whitefish, Coregonus species, were
collected on the lower Susitna River from February through September, 1981.
Humpback shitefish were collected at 24 habitat locations between Alexander
Creek (R.M. 10.1) and Portage Creek (R.M. 148.8). Peak catches of humpback
whitefish were made in early June and late September. The largest catch per
unit efforts for humpback whitefish were recorded at the mouth of Anderson
Creek (R.M. 23.8), the mouth of Portage Creek (R.M. 148.8) and the mainstem
slough 2.5 miles upriver from the Yentna River (R.M. 31.0). Generally
humpback whitefish were more abunda.nt in the Cook Inlet to Talkeetna reach.
The mean fork length for all fish samples was 284 mm. Age IV and Age VI
humpbacks were the most abundant age classes encountered. Fifty-eight percent
of the 67 humpback whitefish that were examined for sex determination were
rna 1 es and forty-two percent were fema 1 es. Numbered Fl oy anchor tags were
implanted into 181 humpback whitefish to monitor humpback whitefish movements
in the lower Susitna River.
3.5.2 Introduction
In Alaska there are three closely related species of whitefish in the genus
Coregonus of which two are often confused with (or often misidentified as) the
humpback whitefish Coregonus pidschian. The three species, humpback whitefish
Coregonus pidschian, Alaska whitefish Coregonus nelsoni, and the lake white-
E-3-59
fish Coregonus cl upeaformis have been distinguished by A lt (1979) using modal
gill raker counts. These whitefish are similar in appearance, have no con-
sistent morphological differ~nces, and have distributions which overlap.
Therefore, for the purposes of this report, we have combined the data which we
collected on these species and grouped it under the general heading of hump-
back whitefish.
Adult humpback whitefishes can be distinguished by a pronounced hump behind
the head and gill rakers that are longer than 20 percent of the interorbital
width.
Information on ranges of the three Alaskan species within the Coregonus
species complex are somewhat confusing because of problems with species
identification. Lake whitefish are reported to be widely distributed in fresh
waters throughout the northern ha 1 f and the northwestern regions of North
America (Scott and Crossman 1973). Alaska whitefish have been documented in
the Yukon River and its tributary drainages above the village of Nulato, Lake
Minchumina, and the Unalakleet and Wulik Rivers. The presently known range of
the humpback whitefish in Alaska is restricted to rivers which empty into the
Bering, Chukchi, and Beaufort seas (Morrow 1980). Possible occurrence of
Alaska whitefish and lake whitefish have been reported in the· Susitna River
drainage (McPhail and Lindsey 1970; Williams 1968).
Life history information gathered on the Alaska whitefish, f. nelsoni, from
studies on the Chatanika and Tanana Rivers indicate that they are largely
stream inhabitants and they undertake lengthy upstream and downstream migra-
tions. The fish begin to move upstream in the spring and this movement
E-3-60
intensifies throughout the summer months as increasing numbers of fish become
sexually mature. From September through October, Alaska whitefish congregate
to spawn in clear, moderately swift streams with moderately clean, gravel
bottoms (Kepler 1973}. After spawning, the majority of the fish move down-
stream and apparently disperse widely throughout the system over the winter
months. Townsend and Kepler (1974) found that Alaska whitefish generally
appear to be nonconsecutive spawners. Alaska whitefish reach sexual maturity
at three to five years of age (Alt 1971).
Lake whitefish, f. clupeaformis, are found primarily in lakes. Stream
dwelling populations are somewhat less common. However, life history
information does indicate that they do spawn in rivers and creeks (Morrow
1980). Spawning sites documented by Morrow had gravel substrates in water
which is 1 to 3 meters deep. Adult lake whitefish breed annually in the
southern part of their range, however those in arctic and subarctic regions
may only spawn every second or third year (Kennedy 1953). Spawning generally
occurs between October and December when water temperatures are less than or
equal to 6°C. Migration studies conducted on lake populations of lake
whitefish showed that they undertake limited seasonal movements between deep
and shallow water (Budd 1957}.
The humpback whitefish, f. pidschian, is apparently the only truly anadromous
form of the humpback whitefishes. Wintering fish have been caught several
miles offshore from the mouths of several western Alaska rivers as well as in
Kotzebue and Norton Sound (Alt 1979). The migratory habits of humpback
whitefish populations in different systems seems to vary substantially. Some
populations have extensive upstream spawning migrations, as evidenced by
E-3-61
humpback whitefish movements of over 1,280 km in the Kuskokwim River, and yet
others do not appear to enter salt water or travel very far upstream at all
(Berg 1948). Spawning migrations generally begin in June~ however spawning
does not actually occur until October or early November. Humpback whitefish
reach sexual maturity at four to six years of age.
The primary utilization of the humpback whitefishes in Alaska are for subsis-
tence. A small spearfishing sport fishery for humpback whitefishes has also
developed on the Chatanika and the Slana River. Some attempts have been made
to harvest whitefish commercially in some Copper River drainage lakes however
with limited success.
3.5.3 Methods
Humpback whitefish were taken in the Susitna River system from Fish Creek
(R.M. 7.0)., a drainage of Flathorn Lake, upstream to Portage Creek (R.M.
148.8), below Devil Canyon. The months of collection for this species were
May to September 1981.
A variety of gear types proved effective for capturing humpback whitefish.
Set and drift gill nets (variable mesh -1.0 to 2.5 inch stretch mesh),
fishwheels, hook and line, and boat-mounted electrofishing units successfully
captured the adult fish. A few juveniles were also obtained for sampling
utilizing beach seines and minnow traps.
E-3-62
Fork 1 engths of a 11 fish captured were recorded, and sea 1 es were taken for
subsequent age determination. Uninjured and vigorous fish were tagged with
Flay anchor tags and released. Mortalities were necropsied to determine sex;
live fish were manipulated to release eggs or milt to aid in sex assessment.
3.5.4 Results and Discussion
3.5.4.1 Distribution and Relative Abundance
Humpback whitefish were first observed in an under-ice gillnet at R.M. 74.4,
2.6 miles below the mouth of Montana Creek, on February 12th. They were also
caught at the mouth of Rolly Creek in March. In May, a few humpback whit~fish
were captured in gill nets at the mouth of the Deshka River .(R.M. 40.6). The
largest individual catch of humpback whitefishes was made on June 4 and 5 at
the mouth of Anderson Creek (R.M. 23.8) utilizing a variable mesh set gill
net. During June, relatively large numbers of humpback whitefish were also
gill netted at Sunshine Creek (R.M. 85.7), Slough 6A (R.M. 112.3), and Portage
Creek (R.M. 148.8). See Appendix Table EB-5.
Humpback whitefish were caught at less than 10 percent of the 44 habitat
locations on the Susitna River between Cook Inlet and Devil Canyon between
mid-July and 1 ate August. Juveni 1 e humpback whitefish were captured with
minnow traps at Alexander Ceek (R.M. 10.1), Kroto Slough (R.M. 30.1), Deshka
River (R.M. 40.6) and Whiskers Creek (R.M. 101.4) in late August arid early
September. Humpback whitefish were gill netted at 19 percent of the habitat
locations below Devil Canyon between September 1 to 15 and 24 percent
E -3-63
thereafter. However, they were more abundant below Ta"lkeetna at Mainstem
Slough (R.M. 33.5), Deshka River (R.M. 40.6) and Sheep Creek (R.M. 66.1). One
hundred and fifty four humpback whitefish were also caught at the Sunshine
Station fishwheel in September (Table E.3.5.1). The percentage incidence of
humpback whitefish at habitat locations on the lower and middle reaches of the
Susitna River is presented for each bi-monthly sampling period in Figures
E.3.5.1 and E.3.5.2.
3.5.4.2 Age, Length and Sex Composition
The ages of 67 Susitna River humpback whitefish were confirmed via scale
analysis. The fish ranged in age from age II to age VII. Age IV fish made up
31.3 percent of the aged catch and this was the predominant age class en-
countered. Age III, age V, and age VI fish each composed 19.4 percent of the
aged fish respectively.
Figures E.3.5.3 illustrate the average length and range of lengths for each
age class of humpback whitefish found on the Susitna River.
Fork lengths were measured to the nearest millimeter on all humpback whitefish
that were captured. Among the 344 fish that were sampled, the lengths ranged
from 38 mm to 489 mm with a mean length of 284 mm (Figure E.3.5.4). The fork
lengths of age III humpback whitefish averaged 237 mm (range 178-285 mm), age
IV averaged 295 mm (range 225-350 mm), age V averaged 326 mm (range 258-370
mm), and age VI averaged 346 mm (range 308-400 mm) (Table E.3.5.2).
E-3-64
Table E.3.5.1. Humpback whitefish fishwheel catches on the Susitna River
Sunshine Station (RM 79.0), August to September, 1981.
Humpback Whitefish
Capture Oates Catch Per Day
8/26 3
8/27 13
9/5 9
9/6 6
9/7 3
9/8 4
9/9 4
·9/10 12
9/11 22
9/12 1
9/13 14
9/14 13
9/15 19
9/16 21
9/18 5
9/20 11
9/21 5
9/22 2
9/44 3
Total 170
E-3-65
rn
I w
I
0"1
0"1
30
p
E
A c
E 20 N
T
I
N c
I 10 0
E
N c
E
0
\..
I I I
JUNE JULY AUGUST
I l I
SEPTEMBER
Figure E.3. 5. 1. Percent incidence of humpback whitefish captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna. June to September, 1981.
I'T'I
I w
I
Cl'l
. "'-J
30 HUMPBACK WHITEFISH -
-
p -
E
A -
c -
E 20 N -
T -
-
I
N -
c -
I 10 0 -
E -
N -c
E -
-
0 I I I I
JUNE JULY
I I
AUGUST
I I I
SEPTEMBER
Figure E.3.5.2. Percent incidence of humpback whitefish captured at habitat location sites on the
Susitna River between Talkeetna and Devil Canyon, June to September, 1981.
,.,
I w
I
0"1 co
~-----------------------------------------------·----------·--------~ 600 HUMPBACK WHITEFISH
.f
0
A
K t
L l!OO t
E t t
N i G t T
H
I 200 t
N
M
M
0 -~---, IT--1 I r . I
0 1 2 3 l! 5 6 7 8 9
AGE IN YEARS
Figure E.3. 5. 3. A9e and len~th relationship for humpback whitefish captured at habitat location
sites on the Susitna River between Cook Inlet and Devil Canyon, June to October&
198.1. The mean length for each a~e class is indicated by a horizontal bar and
the range is indicated by arrows,
fT1
I w
I
01
1.0
25
20 >-u z w 15
~ o.
w
~ 10
LL
5
0 .----Il n rt n
I I I I I I I I I
0 4~ 90 135 t80 225 270 315 360 405
LENGTH Cmm)
figure E.3.5,4.-Length frequency composition of humpback whitefish captured at habitat
location sites on the Susitna River between Cook Inlet and Devil Canyon.
June to October, 1981.
I
450
Age
(Years)
0
I
II
III
m IV
I w
I v "-.!
0
VI
VII
VII I
TOTAL
Table E.3.5.2. Humpback whitefish, age -length frequency composition at habitat
location sites on the Susitna River between Cook Inlet and Devil Canyon
June to October, 1981.
Coo~ Inlet to Tal~eetna Tal~eetna-to Devil Canxon Coo~ Inlet to Devil
Total No. Mean Range of Total No. Mean Range of Total No. Mean
of fish length length of fish length Length of fish length
Sampled (mm) (mm) Sampled (mm) (mm) Sampled (nun)
1 127 127 1 127
4 201 179-220 4 201
20 241 202-285 4 218 178-242 24 237
22 301 253-350 8 280 259-314 30 295
26 328 267-370 9 319 258-357 35 326
34 347 308-400 2 327 320-335 36 346
18 384 322-441 18 384
1 489 489 1 489
126 318 127-489 23 289 178-335 149 314
Canton
Range of
length
(mm)
127
179-220
178-285
225-350
258-370
308-400
322-441
489
127-489
Of the 67 humpback whitefish that were examined to determine sex, 39 (58%)
were males and 28 (42%) were females and the male/female sex ratio was 1.4:1.
Among the most abundant age classes, males comprised 54 percent of age III, 67
percent of age IV, 62 percent of age VI (Table E.3.5.3). Age VII and VIII
fish had the highest percentage of females.
3.5.4.3 Spawning
Large gill net catches were made on the Susitna at Anderson Creek (R.M. 23.8),
Sunshine Creek (R.M. 85.7), Slough 6A (R.M. 112.3), and Portage Creek (R.M.
148.8) between June 1 and June 30th. Examinations of necropsied fish indi-
cated they were sexually mature but not ready to spawn. Between August 26th
and September 14th, 170 humpback whitefish were caught at the Sunshine fish-
wheel (R.M. 79). Inspections of dissected fish' caught from mid September to
early October showed well developed gonads, but again the fish were not yet
ripe. No humpback whitefish were caught or observed after October 7th.
No evidence of humpback whitefish spawning was collected at any sampling
location between Cook Inlet and Devil Canyon during the 1981 season. Con-
sequently, we can only speculate that humpback whitefish in the Susitna River
spawn some time after October 7th.
3.5.4.4 Tagging and Recapture
Tagging of humpback whitefish was conducted to observe seasonal movements and
distribution in the Susitna River system. One hundred eighty nine humpback
whitefish from Cook Inlet to De vi 1 Canyon were tagged with numbered Fl oy
E-3-71
Age
(Years)
0
I
II
III
rn IV I w
I
.........
N
v
VI
VII
VI II
TOTALS
Table E.3.5.3. Humpback whitefish, summary of sex determination data at habitat location sites on the
Susitna River between Cook Inlet and Devil Canyon,
June to October, 1981.
CooR Inlet to Talkeetna Talkeetna to Devil Can~on Total
~1a le Female Total Male Female Total ~ale Female
No. No. No. No. No. No. No. No.
(%) (%) Sexed (%) (%) Sexed (%) (%)
2 0 2 2 0
(100.0) (0.0) (100 0 0) (0.0)
6 6 12 1 0 1 7 6
(50.0) (50.0) ( 100.0) (0.0) (53.8) ( 46 0 2)
12 1 13 2 6 8 14 7
(92.3) (7.7) (25.0) (75. 0) (66. 7) (33. 3)
5 3 8 3 2 5 8 5
(62.5) (37.5) ( 60.0). (40.0) (61.5) (38 0 5)
7 5 12 1 0 1 8 5
(58.3) ( 41. 7) ( 100 0 0) (0.0) (61.5) {38.5)
0 4 4 0 4
(0.0) (100.0) (0.0) (100 0 0)
0 l 1 0 1
(0.0) (100 0 0) (0.0) ( 100.0)
32 20 52 7 8 15 39 28
(61.5) 38.5) ( 46. 7) (53.3) (58.2) (41.8)
Total
No.
Sexed
2
13
21
13
13
4
1
67
anchor tags. The tagged fish were caught primarily by fishwheel and electro-
shocking, with the majority of specimens taken in the reaches of the river
below Talkeetna (Table E.3.5.4}.
The majority of humpback whitefish tagging was done in September and October
with the aid of a boat-mounted electrofishing unit. Only one tagged fish was
recaptured. This fish was tagged at the Sunsh·ine fishwheel (R.M. 78.6} in
late September, and was recaptured with an electroshocker three weeks later on
the opposite side of the river from the point of initial capture.
E-3-73
Table E.3.5.4. Humpback whitefish, summary of tagging data on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981"
NUMBER OF FISH TAGGED
Tagging Ha6Hat Selected Fish
Susitna River Reach Periods Fishwheel locations Habitats
Sunshine
Cook Inlet to Talkeetna 5/1-5/15 9 2
6/1-6/15 4
6/16-6/30 1
7/l-7/15 7
8/16-8/31 13 1
fTI 9/l-9/15 81 2 I w
I 9 2 ....... 9/16-9/30 41a +=>
10/1-10/15 2
Subtotal 135 26 13
Tal eetna
Talkeetna to Devil Canyon 6/1-6/15 2
9/l-9/15 10
9/16-9/30 3
Subtotal 10 5 0
TOTAl 145 31 13
a One recapture. See discussion in text.
Total
11
4
1
7
14
83
52
2
174
2
10
3
15
189
3.6 BERING CISCO
3.6.1 Abstract
Bering cisco, Coregonus laurettae Bean, were collected in the lower Susitna
River from the mouth of Kroto Slough (R.M. 30.1) to a selected fish habitat
just upstream of Talkeetna (R.M. 100.8) from August to October, 1981. Prior
to this study, this anadromous whitefish was not known to inhabit the Susitna
River drainage. Ninety-five percent of the Bering cisco collected were
captured by a fishwheel at Sunshine Station (R.M. 79.0) and a boat mounted
electrofishing unit utilized between (R.M. 70.0) and (R.M. 100.8). The
largest catches per unit effort were made at Sunshine Station (R.M.
78.0-79.0), Montana Creek (R.M. 76.0-77.5) and mainstem west bank (R.M.
74.3-74.8).
The mean fork length for all fish sampled was 332 mm. The most prevalent age
class of Bering cisco encountered was Age IV. Of 51 Bering cisco examined for
sex, 51 percent were male and 49 percent were female. Seven hundred and
thirteen Bering cisco were tagged with Flay anchor tags to determine their
movement in the lower Susitna River. Bering cisco spawning s.ites were
observed at Sunshine Station (R.M. 78.0-79.0), opposite the mouth of Montana
Creek (R.M. 76.0-77.5) and along the west bank of the mainstem Susitna (R.M.
74.3-74.8). Habitat parameters were measured at the spawning sites from
October 10 through 13. Velocities varied from 0.5-5.8 ft./sec., depths ranged
from 0.5-2.5 ft., and temperatures were recorded at 3.0-3.8°C. The spawning
substrates were predominantly composed of 1 to 3 inch gravel. Peak spawning
occurred during the second week of October.
E-3-75
3.6.2 Introduction
The Bering cisco, Coregonus laurettae Bean, was not known to inhabit the
Susitna River drainage prior to this study, although individuals of the
species have been collected from Upper Cook Inlet by Blackburn (1978) and from
the Knik Arm (McPhail, 1966). The known distribution of the species is
restricted to northwestern North America and northeastern Siberia (McPhail and
Lindsey, 1970). It is present in Alaska from Cook Inlet west and north to the
Colville River. Bering cisco are believed to be a coastal species but Alt
(1973) identified them 966 miles up the Yukon River and in the Porcupine River
840 miles upstream from the mouth of the Yukon.
Little is known about the life history of the Bering cisco. Interior and
western Alaskan populations of Bering cisco studied by Alt (1973) appear to be
comprised of both anadromous and freshwater resident forms. Anadromous Bering
cisco apparently rear in salt or brackish water near river mouths, although
Alt suggests that freshwater resident populations overwinter in the middle
reaches of the Yukon and Kuskokwim rivers. Spawning is known to take place in
the fall, but spawning locations and aquatic habitat requirements had not
previously been defined. Spawning migrations begin in the spring and summer
and appear to be quite rapid in nature. Bering cisco do not appear to feed
during the spawning migration; a condition common to many species of Alaskan
whitefish. Western and Interior Alaska spawners examined by Alt ranged from
Age III to Age VIII and no evidence of repeat spawning was found.
E-3-76
3.6.3 Methods
Bering cisco were collected in the fall of 1981 with variable mesh gillnets
(four 7.5 ft. panels with 1 to 2-1/2 inch stretch mesh), fishwheels and boat
mounted electrofishing units.
Bering cisco were taken in the Susitna River at River Mile (RM) 30.1 near the
mouth of Kroto Slough and upstream to RM 100.8 just north of Ta.lkeetna.
All fish captured were measured for fork length and, where survival from
collection and handling was likely, the fish were tagged with Flay anchor tags
and released. Age determinations were made using scale analysis. Sex was
determined by autopsy and by abdominal manipulation to obtain the discharge of·
eggs or milt.
3.6.4 Results and Discussion
3.6.4.1 Distribution and Relative Abundance
A total of 834 Bering cisco were captured during the course of this study.
Bering cisco were first captured and observed at RM 79.0 by the lower east
bank fishwheel at Sunshine Station on August 25. The fishwheel catch rate on
cisco gradually increased until it peaked between September 17 and 21 (Table
E.3.6.1). Fishwheel catches declined rapidly after September 28 and the
fishwheel was removed from the water for winter storage on September 30. At
Mainstem Slough (RM 31.0) and Kroto Slough Mouth (RM 30.1) Bering cisco were
E-3-77
Table E.3.6.1. Bering cisco fishwhee1 catch on the Susitna River
at Sunshine Station (RM 79.0), August to September~ 198L
Date
8-25
8-27
9-5
9-6
9-7
9-8
9-9
9-10
9-11
9-13
9-14
9-15
9~16
9-17, 9~18
9~19, 9-20
9-21
9-22
9-23
9-24
9-25
9-26
9-27
9-28
9=30
E-3-78
Catch per day
3
4
2
5
2
3
1
8
11
9
3
2
11
39
50
58
6
21
16
12
13
4
15
5
taken by gillnet on September 10 (Table E.3.6.2) and again at Mainstem Slough
on September 14 and 28.
El ectrofi shing conducted September 25 through October 15 demonstrated that
Bering cisco were dispersed in the Susitna River from RM 70.0 to RM 100.8.
Relatively large numbers were located near Sunshine Station (RM 78.0 to 79.0),
Montana Creek (RM 76.0 to 77 .5), and Mainstem West Bank (RM 74.3 to 74.8)
while smaller numbers and individuals were distributed throughout the range of
sites listed in Table E.3.6.3.
Susitna River Bering cisco appear to be the anadromous form. The fish cap-
tured and identified were evidently undertaking their spawning migration, as
no substantiated occurrence of the species was noted prior to August 25, 1981.
3.6.4.2 Age, Length, and Sex Composition
One hundred ninety Susitna River Bering cisco from fishwheel, gill net and
electrofishing catches were aged. Table E.3.6.4 illustrates that the majority
of fish were Age IV (88%) with the remaining Age III (9%) and Age V {3%).
Of the Bering cisco used for age determination, Age III Bering cisco averaged
305 mm in fork length (range 277-342 mm) while Age IV averaged 337 mm (range
280-390 mm) and Age V averaged 365 mm (range 336-385 rnm). Figure E. 3. 6. 1
i 11 ustrates the average 1 ength and range of 1 engths for each age class of
Bering cisco caught in the Susitna River.
E-3-79
Table E.3.6.2. Bering cisco gillnet catch on the Susitna River at
Kroto Slough mouth (RM 30.1) and Mainstem Slough (RM 31.0), September 1981.
Net Number Fish/
Date(s) Location Nights Caught net night
9-10, 9-11 Mainstem Slough 2 23 11.5
RM 31.0
9-11 Kroto Slough Mouth 1 1 1.0
RM 30.1
9-14 Mainstem Slough 1 2 2.0
RM 31.0
9a.28 Mainstem Slough 1 2 2.0
RM 3LO
E-3-80
Table £.3.6.3. Bering cisco electrofishing catch on the Susitna River between
RM 67.5 and RM 97.9, September 25 to October 15, 1981.
River Total
Date Location Mile Catch/hr. Catch
10/2 Billion Slough Mouth 97.9 0.0 0
10/2 Mainstem Susitna 97.7 0.0 0
10/3 Mainstem Susitna 95.8 8.0 4
10/3 Cache Creek Slough Mouth .gs .5-0.0 0
10/3 Mainstem Susitna 95.3. 4.0 1
10/3 Mainstem Susitna 95.0· 0.0 0
10/3 Birch Creek Slough Head 92.9· 0.0 0
10/3 Mainstem Susitna 91.9 0.0 0
10/4 Birch Creek Slough Mouth 88.4 0.0 0
10/4 Mainstem Susitna 86.0 20.0 10
10/6-7 Mainstem Susitna 84.0 12.0 12
10/6 Mainstem Susitna 83 .2, 0.0 0
10/4 Rabideux.Creek Mouth 83.1 0.0 0
10/6 Mainstem Susitna 80.0 28.0 7
10/5~ 6, 7 Mainstem Susitna Sunshine 78.5 52.0 78
10/5' 6, 7 Mainstem Susitna Montana 77.!0 33.3 83
10/6 Montana Creek Mouth 76 .·9 12.0 3
10/6 Mainstem Susitna 74".6 8.0 2
10/5, 6 Mainstem Susitna West Bank 74.5 39.3 59
10/6 Mainstem Susitna 70.0 17.0 17
10/13 Mainstem Susitna 84.0 0.0 0
10/13, 14 Mainstem Susitna Sunshine 78.5 76.0 38
10/13, 15 Mainstem Susitna Montana 77 13.3 10
10/ Montana Creek Mouth 76.9 0.0 0
10/13 ~tainstem Susitna 74.5 8.0 2
10/13 Mainstem Susitna 74.0 0.0 0
10/15 Goose Creek Mouth 7.3 .1 0.0 0
10/15 Mainstem Susitna 70.0 0.0 0
10/15 Mainstem Susitna 67.5 4.0 1
E-3-81
Table E.3.6.4. Bering cisco, age-length frequency composition on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
A l100
v
G
F 300 0
R
1\
rn L 200-I E w
I N CP w
G
T
H
100-·
I
tf
M
t1 0-··
0
Figure E.3.6 .1.
T
1
AGE-LENGTH RELATIONSHIP
BERING CISCO
t
t -
'
T I I
2 3 '1
AGE IN YEARS
t -
~
r I
5 6
Age and lenpth relationship for Berin~ cisco captured at habitat location sites on the
Susitna River between Cook Inlet and Devil Canyon, June to October, 1981. The·mean
length for each af!e class is indicated by a horizontal bar and the ran~e is indicated
by arrows.
Six-hundred fifty-eight Bering cisco captured by fishwheel, gillnet and
electrofishing were measured to the nearest millimeter (mm) in fork length.
Fish 300 mm to 360 mm occurred with the greatest percent frequency. Mean
length of ciscos measured was 332 mm in fork length with an overall range of
220 to 430 mm (Figure E.3.6.2}.
All fish examined for sex composition were mature. Of the 51 Bering cisco
examined 26 (51%} were males and 25 (49%) were female. Males comprised 83
percent of the Age III fish for which sex determination was made, and 49
percent and 100 percent of Age IV and Age V fish respectively (Table E.3.6.5).
3.6.4.2 Spawning
Bering cisco evidently began their spawning migration up the Susitna River
from Cook Inlet in August and arrived at the Sunshine Station fishwheel site
RM 79 over a five week period from August 25 to September 30. Fish captured
by the fishwheel during this time were all bright silver and appeared to be
sexually mature. However, normal handling did not produce a discharge of eggs
or milt. From October 4 through 7 relatively large numbers of Bering cisco
were located by electrofishing in the Montana Creek-Sunshine Station area {RM
74.5 to RM 80.0) dispersed along gradually sloping gravel bars. These fish
were amber in color but had not yet spawned. Random necropsies showed all
fish to contain mature sex products.
Electrofish·ing was conducted in the Montana-Sunshine area again October 13
through 15. All fish handled on these dates either expelled eggs or milt
E-3-84
25
>-20
u z w 15
:=)
0 w
lY 10
LL
fTl
I w ~ I
00 5 CJ1
0
I
0
I
45
I
90
I
135
I
180 22~
LENGTH
I
270
Cmm)
I
315
I
360
I
405
figure £.3,6.2. length frequency composition of Bering cisco captured at habitat
location sites on the Susitna River between Cook Inlet and Devil
Canyon, June to October, 1981.
I
450
Age
(Years)
0+
I
II
III
ITI
I IV w
I co
0'\
v
TOTALS
Table E.3.6.5. Bering cisco~ summary of sex determination data on the Susitna River
between Cook Inlet and Devil Canyon, June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Canxon
Male female Total Male Female Total Male
No. No. No. No. No. No. No.
(%) (%) Sexed (%) (%) Sexed (%)
5 1 6 5
(83.3) {16. 7) . ( 83.3)
22 21 43 22
{51.2 {48.8) (51.2}
0 2 2 0
(0.0) ( 100.0) (0.0)
27 24 51 0 0 0 27
(52.9) (47.1) (52.9)
Total
Female Total
No. No.
--c~)·· Sexed
1 6
(16 .1)
21 43
(48.8}
2 2
(100.0)
24 51
( 47 .1)
freely or were spent. From these observations, spawning appeared to peak
during the second week of October.
Sexually mature Bering cisco were captured from habitat locations over a 70
mile reach of the Susitna River. Although spawning sites may generally occur
throughout this reach, electrofishing surveys were able to identify three
areas of spawning concentrations. These were at RM 78.0 to 79.0 opposite
Sunshine Station,· RM 76.0 to 77.5 opposite the mouth of Montana Creek and RM
74.3 to 74.8 along the west bank.
The Sunshine Station (RM 78.0 to 79.0) spawning site is a mile-long gradually
sloping gravel bar opposite a 100 foot high cut bank. The channel con-
figuration and position of the thalweg are stable at this site. Bering cisco
were captured at depths ranging from 0.5 feet to 2.5 feet and at velocities
0.5 feet per second to 3.5 feet per second (Figure E.3.6.3). Substrate ranged
from silt to cobble with one to three inch gravel predominating (Table
E.3.6.6). Water temperature on October 13 was 3.8°C.
The Montana Creek (RM 76.0 to 77.5) spawning site is a 1.5 mile long gradually
sloping gravel bar opposite Montana Creek mouth, with a relatively stable
channel. Bering cisco were captured at depths ranging from 0.6 feet to 2.3
feet and at velocities from 0.8 to 4.1 feet per second (Figure E.3.6.4). The
substrate ranged from silt to cobble but one inch to three inch gravel and
cobble predominated. Water temperature on October 13 ranged from 3.0° to
3.3°C over the length of the spawning site.
E-3-87
1"0
(.11
0 o_
(Q
'""!
llJ
< (1)
o-
llJ
'""!
1.1 2.0 rt n
1 .. 5 1..8
2.8 3.8
0.] o:s
O.J
0.7
1 .. 0 o:a
1 .1 o:a
1.2
0.7
.Ll
1.0
1..4
IT
1..0
1.0
1,.5 1..8
1.4 r.7
l.D
0.8
1 .. 7
1.2
1..5
0.8
2.J
1.2
1..4 2..1
r.T 2.3
1.9 2.2
D G
1.7 2.0
1:0 G
2.0 2. 5
1.3 1:4
1 .• 9 2 ..3
1.7 G
1.5 2.0 a 1.9
1 ... o 1.8 2 .o o:r n n
,_...__ so' _ _, __
Cl'.
c en --t z
>
-<
"' :u
* depth (feet)
velocity (feet/sec)
Figure £.3.6.3. Bering cisco $pawning area on the Susitna River at
Sunshine, RM-78.0 to RM-79.0, October 13, 1981.
E-3-88
Table E.3.6.6. Bering cisco spawning site evaluation on the Susitna River~
October, 1981.
Location Mile Date T°C .Eli Cond DO Substrate Camp. --
Sunshine 78-79 10-13 3.8 7.0 127 12.3 40%: P-311 gravel
25%:3 11 -6 11 cobble
20%:si1t & sand
10%:1/4 11 -1 11 gravel
Montana 77-77.5 10-13 3.0 7.0 131 13.4 30%: l"-3~'gravel
30%:3"-6 11 cobble
20%:silt & sand
10%:1/4"-1"gravel
76-77 10-13 3.3 6.8 128 12.6 30%: 1 11 -3"grave l
30%:3"-6 11·CObble
20%:silt & sand
10%:1/4"-1 11 gravel
Mainstem West 75 10-13 3.1 7.0 134 13.0 40%: l"-3"gravel
Bank 20%: 3"-6"cobble
20%:sand & silt
10%:1/4 11 -1 11 gravel
E-3-89
-f\;;) en
0
(.11
0
0 -
0.6 n
::9..:1_
(D 1. 9
1 .. a
13
l:Q
1.2
1.4 1.7
I
80
0.9 rt
~ 2.6
1 .. 7
2.4
u 2.0
1.8
TI
2.0
4.T
2 .. 0
3.0
~;·
2.3 UJ. c:
en -1.6 n 1 .8 -f
I.E" z
~
2.0 :a ....
/~
Q l.i n n ~ I
I
<C
'""' Q)
<
(l)
\ a L
.....
u
I. 3
1.5
1.2
2 • .0
G
1.5 1.8 2.0
o.9 n n
l.fl l.B 2.3
1:3 1.4 G
1 ~0 1 ,.5 2 .. 1
2:T 2.3 2.5 ,
80 ,..
~
I
* depth (feet)
velocity (feet/sec.)
Figure £,3.6,4. Bering cisco spawning area on the Susitna River at
Montana Creek, RM-76.0 to RM-77.5, October 15, 1981.
E-3-90
The mainstem westbank (RM 74.3 to 74.8) spawning site differed from the
Sunshine and Montana sites because it is located on the outside of a riverbend
and has higher water velocities. The channel configuration at this site is
also relatively stable. Bering cisco were captured at depths ranging from one
foot to 2.5 feet and at velocities 3.6 to 5.4 feet per second (Figure
E.3.6.5). Substrate ranged from silt to cobble with one inch to three inch
gravel predominating. Water temperature on October 13 was 3.1°C.
3.6.4.3 Tagging and Recapture
Seven-hundred thirteen Bering ci sea were tagged with Fl oy anchor tags and
released in the area of their capture (Table E.3.6.7). Thirteen of these fish
were recaptured from one to 16 days after tagging. Distance traveled by these
fish ranged from zero to four miles.
The majority of tagging for Bering cisco was conducted at or near identified
spawning locations. Since subsequent electrofishing recapture efforts took
place at these same locations, very little movement was detected.
Susitna River Bering cisco appear to spend 15 to 20 days on their spawning
grounds. This reflects the time i nterva 1 between the peak catches at the
Sunshine Station and the peak of spawning. After spawning, these fish
probably undertake a rapid downstream migration to sea, as is common with many
other anadromous Alaskan whitefish. Cold weather and river icing conditions
prevented capture efforts from taking place in the lower reaches of the
E-3-91
N
* depth (feet)
velocity (feet/sec.)
1 .. s
3.6
....
ttl' 1 • 5 ..Q
4.5
1 .. 5
4.5
1 .. 0
3.5
2 .. 2
5.0
2..0
5.8
2~5
4.5
2~3
5.8
1 •. 9
5.4
'
2~o0 <::) c
5.4
,_
Figure E.3.6.5. Bering cisco spawning area on the Susitna River at
Mainstream West Bank, RM-75.0, October 13, 1981.
E-3-92
Table E.3.6.7. Bering cisco, sununary of tagging data on the Susitna River
between Cook Inlet and Devil Canyon, August to October, 1981.
NUMBER OF FISH T~GGED
Tagging Habitat Selected Fish
Susitna River Reach Periods Fishwheel Locations Habitats
Cook Inlet to Talkeetna 8/16-8/31 7
9/1-9/15 46 23
9/16-9/30 250 11 53
10/1-10/15 3 307
1"11 Subtotal 303 37 370
I
I
. 1.0 ')tall keetna to Dev i 1 Canyon 9/16-9/30 1
10/1-10/15 2
Subtotal 0 0 3
TOTAL . 303 37 373
Note -Recapture data presented in discussion section.
Total
7
69
314
310
710
1
2
3
713
Susitna River in mid October. As Alt (1973) suggests that repeat spawning
does not occur in Bering cisco, it is highly unlikely that any of the tagged
fish will be recaptured in subsequent years.
E-3-94
3.7 LONGNOSE SUCKER
3.7.1 Abstract
Longnose suckers, Catostomus catostomus, were found throughout the study area
from Alexander Creek (R.M. 10.1) to Portage Creek (R.M. 148.8). The catch per
unit effort for gillnets at most habitat locations was highest in June and
September with lower catches per unit effort recorded during July and August.
Anderson Creek (R.M. 23.8), Deshka River (R.M. 40.6), Sunshine Creek (R.M.
85.7), and the mainstem Susitna at river mile 114.4 were the most productive
locations. The most prevalent age classes of the 197 fish aged were· Age IV,
Age V, and Age VI, with Age VI the most common. Age VI fish averaged 324 mm
in fork 1 ength and ranged from 171 to 374 mm. The 532 1 ongnose suckers
captured ranged in fork 1 ength from 32 to 455 mm with a mean of 259 mm. . A
total of 350 longnose suckers were tagged with Flay anchor tags to determine
movement. Two of these were recaptured in the same area in which they had
been released and a third one had moved 1.5 miles downstream.
3.7.2 Introduction
The longnose sucker, Catostomus catostomus Forster, is widely distributed from
Alaska to Labrador. It extends south into Pennsylvania on the east coast, the
Mississippi-Missouri river system of the midwest and the Columbia River system
on the west coast (McPhail and Lindsey, 1970). The longnose sucker is the
only North American sucker which·also occurs in Asia, where it is·found in
several of the Arctic Ocean drainag~s of Siberia (Scott and Crossman, 1973).
E-3-95
This sucker is ubiquitous in most of the drainages of mainland Alaska but is
not found on the islands along the Pacific, Bering and Arctic coasts (Morrow,
1980).
The longnose sucker is the only representative species of the sucker family
found in Alaska. It can be easily distinguished from other Alaskan fishes by
its ventral sucking mouth and large papillose lips. There are no obvious
external differences between the sexes except during spawning periods when
breeding males have well developed tubercles on the head and on the anal and
caudal fins. Breeding males are also more vividly colored than females with
the prominent feature being a bright ~ed stripe along each side.
Investigations into the life history of the longnose sucker by Morrow (1980)
indicate the age of sexual maturity varies with latitude. The northernmost
fish spawn for the first time between the ages of five and six years.
Spawning usually takes place in spring shortly after ice out. Fish in the
lower latitudes generally spawn between late April and May; farther north,
spawning may not occur until July. Spawning runs begin when the water
temperature exceeds 5°C (41°F) and at this time fish begin moving from lakes
into inlet streams or from deep pools into shallower gravel-bottomed portions
of streams. After spawning, fish usually return to their previous lake or
stream position. Post spawning mortality is estimated to be 10 to 30 percent.
Many fish spawn in consecutive years for two or three years while others spawn
only once in two or three years (Green et al., 1966). The eggs hatch in about
two weeks depending on temperature and the fry remain in the gravel an
additional one to two weeks after hatching. Most fry then begin a nocturnal
movement downstream to the lake while others remain in the streams all summer.
E-3-96
The longnose sucker is almost exclusively a bottom feeder with benthic inver-
tebrates constituting the major portion of its diet. There is no record of
them feeding on vertebrates. There have been reports of this species
ingesting fish eggs, including those of trout, but in most cases these eggs
were floating and dead when eaten (Scott and Crossman, 1973).
3.7.3 Methods
Longnose sucker were collected in the summer and fall of 1981 with variable
mesh gill nets (four 7.5 ft. panels with 1 to 2-1/2 inch stretch mesh), fish-
wheels, fry traps and boat mounted electrofishing units. All fish captured
were measured for fork length in millimeters. Age determinations were made
using scale analysis. Sexes were identified by examining reproductive organs
of autopsied fish or by abdominal manipulation to obtain discharges of eggs
and milt. Where survival from collection and handling was anticipated,
suckers were tagged with Flay tags and released.
3.7.4 Results and Discussion
3.7.4.1 Distribution and Relative Abundance
Longnose suckers were first captured and observed at the mouths of the Deshka
River (RM 40.6) and Cache Creek Slough (RM 95.5) on May 9th. In early June,
longnose suckers were captured at several locations on the .Susitna River
between Kroto Slough (RM 30.1) and Portage Creek (RM 148.8). The percentage
of habitat locations where longnose suckers were captured by gillnet was
E-3-97
relatively high during the early part of the summer, then decreased during
mid-summer (Figure E.3.7.1 and E.3.7.2). The percentage increased again in
September in the lower river, but not above Talkeetna. The highest fall
gillnet catches were reported at the Deshka River {RM 40.6) and Sheep Creek
Slough (RM 66.1) (Appendix Table EB-7). An increased presence of longnose
suckers was also detected in the mainstem Susitna below Talkeetna in September
with the aid of boat mounted electrofishing units. A total of 532 longnose
suckers were captured during the course of this study.
A continual presence of juvenile longnose suckers was found using minnow
traps, primarily in the Susitna River below Curry (RM 120.7). Their presence
shifted further downriver as the season progressed.
3.7.4.2 Age, Length, and Sex Composition
One hundred ninety-seven longnose suckers taken from the Susitna River by
fishwheel, gill net and electrofishing gear were aged by scale analysis. The
majority of these fish were Age VI and VII, comprising 33 and 22 percent of
the catch respectively (Table E.3.7.1). The oldest fish caught were Age IX
(3%) while the youngest were Age 0+ (1%). Longnose sucker of Age VI averaged
324mm in fork length (range 171-374) while those of Age VII averaged 368mm
(range 312-400).
Figure E.3.7.3 illustrates the average length and range of lengths for each
age class of longnose sucker caught in the lower Susitna River.
E-3-98
m
I w
I
1.0
1.0
50 -lON GNOSE SUCKER
-
-p
E -
A 4:0 c
--
E -
N -
T -
-
I 30 -
N -
c -
I -
0 -
E 20 -
N -c ....:
E -
-
10 I I I I I I I I I
JUNE JULY AUGUST SEPTEMBER
Figure E.3. 7.1. Percent incidence of lon9nose suckers captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna, June to September, 1981.
IT1
I w
I
I-'
0
0
100 LONGNOSE SUCKER -
-p
E 80 A -
c
E -
N 60 T -
I -
N c L!O -
I
0 -
E
N 20 -c
E -
0 I I I T T I I I I
JUNE JULY AUGUST SEPTEMBER
figure E.3.7.2. Percent incidence of longnose suckers captured at habitat location sites on the
Susitna River between Talkeetna and Devil Canyon, June to September5 1981.
Table E.3.7.1. longnose sucker, age -length frequency composition at habitat location sites on the
Sus itna River between Cook Inlet and De vi 1 Canyon,
June to October, 1981.
Cook Inlet to Talkeetna Talkeetna to Devil Can~on Coo~ Inlet to Devil Can~ on
Total No. Mean Range of Total No. Mean Range of Total No. Mean Range of
Age of fish length length of fish length length of fish length length
(Years) Sampled. (nun) (mm) Sampled (mm) (nun) Sampled (nun) . (nun)
0 2 73 62-84 2 73 62-84
I
II 1 120 120 1 120 120
III 13 211 162-267 1 168 168 14 208 162-267
IV 9 239 225-268 8 237 199-283 17 238 199-283
rn v 15 286 244-348 10 263 241-305 25. 276 241-348 I w
I ...... VI 37 341 315-367 28 301 171-374 65 324 171-374 0 ......
VII 33 375 350-437 11 346 312-400 44 368 312-437
VIII 17 410 334-440 7 383 369-405 24 402 334-440
IX 5 452 432-475 5 452 432-475
X
TOTALS 130 335 120-475 67 295 62-405 197 321 62-475
600 LONGNOSE SUCKER
F
0
A t K t t
L!OO -L -E t t
N ..... t G t T t ' fT1 H I w
I ' 1-' 200 0
N I ' N
M t M
0
0 1 2 3 l! 5 6 7 8 9 10
AGE IN I EARS
...
figure E.3.7.3. Age and length relationship for lon~nose suckers captured at habitat location sites
on the Susitna River between Cook Inlet and ·Devil Canyon, June to October, 1981. The
mean length for each age class is indicated by a horizontal bar and the range is
indicated by arrows.
The fork lengths of 358 longnose suckers were measured to the nearest
millimeter (mm). Fish 250 to 260 mm in length occurred with the greatest
percent frequency (8%). The mean fork length of fish measured was 256 mm with
an overall range of 32 to 455 mm (Figure E.3.7.4).
Of the 15 longnose suckers which were examined to determine age and sex, 10
(66.7%) were males and 5 (33.3%) were females (Table E.3.7.2).
3.7.4.3 Tagging and Recapture
Three hundred and fifty 1 ongnose sucker were tagged with Fl oy anchor tags
during the field season (6/1-9/30) and released in the area of their capture
(Table E.3.7 .3). Three of these fish were recaptured from one to 29 days
later. Two of the recaptured fish showed no movement. A third sucker tagged
on October 5th moved 1.5 miles downstream in the Susitna River over a 24-hour
period. Due to the low number of recaptures made, little can be inferred
about migrations and movements at this time.
E-3-103
fTl
I w
I ...... a
..j:»
>-u
z
25
20
w 15
=::)
0 w
ex:: 1 0
LL
5
0 A r-1
I I I I ' I I I I
0 50 100 150 200 250 300 350 400 450
LENGTH Cmm)
Ftgure E.3.7.4. length frequency composition of longnose sucker captured at habitat
location sites on the Sustina River between Cook Inlet and Devil Canyon,
June to October. 1981.
I
500
Table E.3.7.2. Longnose sucker, su1nmary of sex determination data at habitat location sites on the
Susitna River between Cook Inlet and Devil Canyon,
June to October, 1981.
Cook Inlet to Talieetna Talkeetna to Devil Can~ on Total
Male Female Total Male Fema1e Total Male Female
No. No. No. No. No. No. No. No. Age
(Years) (%) (%) Sexed (%) (%) Sexed (%) (%)
0 -
I
II
III
IV 1 0 1 1 0
rn (100.0) (0.0) ( 100.0) (0.0)
I w v 1 0 1 3 0 3 4 0 I ...... (100.0) (0.0) (100.0) (0.0) (100.0) (0.0) 0
U1
VI 0 1 1 2 1 3 2 2
(0.0) (100.0) (66.7) (33.3) (50.0) (50.0)
VII 1 0 1 2 0 2 3 0
(100.0) (0.0) (100. 0) (0.0) (100.0) (0.0)
VI II 0 2 2 0 1 1 0 3
(0.0) (100.0) (0.0) ( 100.0) (0.0) (100. 0)
TOTALS 2 3 5 8 2 10 10 5
(40.0) (60.0) (80.0) (20.0) (66. 7) (33.3)
Total
No.
Sexed
1
4
4
3
3
15
IQUit:: L.J.I • .J, LUII!::JI!U;:)t:: !)Ul..!'I.Cr-5 !IUIIIIIICli·J-UI -t.Cl!:j!::Jili!::J UULQ Ull Lilt: .JU!)ILIIO 1\IVt::l
between Cook Inlet and Devil Canyon, May to October, 1981.
NUMBER OF FISH TAGGED
Tagging Habitat Se 1 ected fish
Susitna River Reach Periods Fishwheel Locations Habitats Total
Sunshine
Cook Inlet to Talkeetna 5/1-5/15 121 19 140
6/1-6/15 42 42
6/16-6/30 25a 25
7/l/7/15 13 13
8/1-8/15 5 4 9
8/16-8/31 1 3 3
9/1-9/15 7 7
9/16-9/30 22 -22
10/1-10/15 8a 8
Subtotal 1 238 31 270
I w Talkeetna I
I--'
~al keetna to Devil Canyon 6/1-6/15 12 12
6/16-6/30 1 37a 37
7/l-7/15 7 7
7/16-7/31 18 18
8/16-8/31 1 1
9/16-9/30 5 5
Subtotal 0 80 0 80
TOTAL l 318 31 350
a One tagged recapture from each of these note. Total recaptures for longnose suckers equaled 3.
'
3.8 DOLLY VARDEN
3.8.1 Abstract
One hundred fourteen Dolly Varden, Salvelinus malma, were collected on the
lower Susitna River from March through late September, 1981. Dolly Varden
were collected at 23 habitat locations between Alexander Creek (R.M. 10.1) and
Portage Creek (R.M. 148.8). Peak catches of Dolly Varden were made in June
and late September. The largest catch per unit effort for Dolly Varden were
recorded at the mouths of tributary streams such as Portage Creek (R.M.
148.8), Kashwitna River (R.M. 61.0), and Sheep Creek (R.M. 66.1). The mean
fork length for Dolly Varden. ca.ptured in the Susitna River between Cook Inlet
and Devil Canyon was 196 mm. Dolly Varden sampled by minnow traps in upper
Indian River and Portage Creek had a mean length of 94 mm. Fifty-nine Dolly
Varden were tagged with numbered Flay anchor tags to monitor their movements
in the Susitna River.
3.8.2 Introduction
Dolly Varden, Salvelinus malma Walbaum are distributed throughout Alaska where
the species occupies aquatic habitats ranging from coasta 1 streams to 1 akes
and streams 1 ocated far inland. Dolly Varden occur as both anadromous and
freshwater resident forms. In the upper reaches of many streams and in
numerous mountain lakes there exists isolated populations of stunted, dwarf
Dolly Varden. These fish, locally referred to as golden fins, rarely exceed
270 millimeters fork length but there have been specimens reported to reach up
to 12 years of age (Morrow, 1980). The Dolly Varden exhibits as much color
E-3-107
variation as the degree to which it's habitat varies. In salt water, it is
silvery; in cold headwater mountain streams, it tends to have bright orange or
red spots. Body conformity varies from slim in mountainous streams to full
bodied in the anadromous populations. Dolly Varden reach sexual maturity at
Age IV to Age VII and normally spawn in swift clearwater streams during the
fall of the year. The diet of Dolly Varden varies considerably, however
Morrow ( 1980) indicates that stream populations feed primarily on insects,
spiders, annelids, snails, clams, fish eggs, and various small fishes. Dolly
Varden are known to eat salmon eggs and salmon fry; however, the extent to
which this occurs on the Susitna River is not currently known.
3.8.3 Methods
Dolly Varden were captured using minnow traps, trotlines, gillnets, fish traps
and hook and line. All specimens captured were measured for fork length in
mi 11 imeters.
Active adults were tagged with Flay anchor tags. Scales were collected from
approximately 50 fish for age analysis but the majority were unreadable.
3.8.4 Results and Discussion
3.8.4.1 Distribution and Relative Abundance
November through May sampling within the Susitna River, from Cook Inlet to
Devil Canyon, produced a catch of two Dolly Varden. One was taken by gillnet
from Little Willow Creek; one was taken by trot line at River Mile 84.0.
E-3-108
Dolly Varden were collected at a total of 52 percent of the habitat locations
in the Cook Inlet to Talkeetna reach during June to September 1981. The
occurrence of Dolly Varden in habitat location catches by a two week period
varied from a low of eight percent in the last two weeks of August to a high
of 20 percent in the last two weeks of September (Figure E.3.8.1). Tributary
stream mouth habitat locations produced the most consistent catches of Dolly
Varden with the highest catches occurring at the mouth of Portage Creek (R.M.
148.8) (Appendix Table EB-8) in early June.
Dolly Varden were collected at a total of 59 percent of the habitat locations
in the Talkeetna to Devil Canyon reach. During June to September the occur-
rence of Dolly Varden in habitat location catches varied from a high of 21
percent in June to a 1 ow of no catches in July. Catches of Dolly Varden
occurred again in August and September (Figure E.3.8.2). A total of 17 Dolly
Varden were captured in habitat locations at the mouths of Indian River and
Portage Creek~ and a selected fish habitat site at the mouth of Billion Slough
produced 7 of the 17 fish captured. Other sites produced maximum catches of
only one Dolly Varden.
The higher incidence of Dolly Varden catches during July coincided with the
peak migration periods of pink~ chum, and sockeye salmon. The higher
incidence of catches during September can be attributed to two factors: Dolly
Varden moving into their spawning areas within the clearwater tributaries~ and
the beginning of outmigration into their wintering habitat.
E-3-109
fT1
I w
I
1--'
1--'
0
-~---·-------20 DOLLY VARDEN
p
E
R 15 c
E
N
T
I 10
N c
I
0
E 5
N c
E
o+n-I I I I I I l
JUNE JULY AUGUST SEPTEMBER
Figure E.3.8.1. Percent incidence of Dolly Varden captured at habitat location sites on the Susitna
River between Cook Inlet and Talkeetna, June to September, 1981.
rn
I
~
I
~
~
~
30 DOLLY VARDEN.
p
E
R c
E 20 N T
I
N c
I 10 0
E
N c
E
0
JUNE JULY AUGUST SEPTEMBER
figure E.3.8.2. Percent incidence of Dolly Varden captured at habitat· location sites on the Susitna
River between Talkeetna and Devil Canyon, June to.September, 1981.
Small Dolly Varden (mean length of 94 mm) were captured in upper Portage Creek
and upper Indian River. Slightly larger individuals were observed around the
miniow traps, but, due to their larger size, were unable to enter the traps.
Catch and catch per unit effort by site and date are shown in Table E.3.8.1.
Sexually mature fish were found in September and October. Dolly Varden
displaying spawning behavior were observed October 2nd in upper Indian River.
3.8.4.2 Length Frequency
Fork lengths were recorded from 89 Dolly Varden in the Cook Inlet to Devil
Canyon habitat 1 ocati ons. Lengths ranged from 49mm to 407mm with a mean of
196mm. The majority of the lengths were found in the 90-180mm range (Figure
E.3.8.3).
The lengths of 127 Dolly Varden collected at upper Indian River and Portage
Creek sites ranged from 62mm to 135mm with a mean of 94mm.
3.8.4.4 Tagging
A total of 59 Dolly Varden were tagged with Flay anchor tags in the Cook In1et
to Devil Canyon reach; 47 from Cook Inlet to Talkeetna and 12 from Talkeetna
to Devil Canyon (Table E.3.8.2). No recaptures have been recorded.
E-3-112
Round
1
2
I'T1
I w
I
1-'
1-' w
3
TOTAL
Table £.3.8.1. Dolly Varden catch and catch per unit effort (CPUE} by habitat
location sites, upper Indian River and upper Portage Creek helio surveys,
June to October, 1981.
Indian River Portage Creek
Site RM Catch CPUE/Trap Site RM Catch
1 2.7 0 0.00 1 4.5 1
2 7.2 0 0.00 2 9.2 3
3 12.0 0 0.00 3 1~.6 3
1 2.7 4 0.50 1 4.5 28
2 7.2 16 l. 78 2 9.2 41 .
3 12.0 22 2.20 3 15.6 35
1 2.7 0 0.00 1 4.5 3
2 7.2 1 0.14 2 9.2 7
3 12.0 7 1.00 3 15.6 6
1 2.7 4 0.17 1 4.5 32
2 7.2 17 0.64 2 9.2 51
3 12.0 29 1.07 3 15.6 44
50 127
CPUE
0.02
0.15
0.15
2.80
4.10
3.50
0.30
0.70
0.60
1.04
1.65
1.42
IT1
I w
I ....... .......
.j:::.
25
>-20
u z w
=:)
0 w
Ci
lL
~
15
10
5
0
I
0
n
I
45
I
90
I
135
I
I 80 225
LENGTri
I
270
Cmm)
I
315
I
360
I
405
I
450
figure E.3.8,3, Length frequency composition of Dolly Varden captured at habitat location sites
on the Susitna,River between Cook Inlet and Devil Canyon~ June to October~ 1981.
Table E.3.8.2. Dolly Varden, summary of tagging data on the Susitna River
between Cook Inlet and Devil Canyon, May to October, 1981.
NUMBER OF FISH TAGGED
Tagging Habitat Selected Fish
Susitna River Reach Periods Fishwheel locations Habitats Total
Cook Inlet to Talkeetna 5/1-5/15 0 2 0 2
5/16-5/31 0 0 0 0
6/1-6/15 0 0 0 0
6/16-6/30 0 11 0 11
7/1-7/15 0 12 0 12
7/16-7/31 0 5 0 5
8/1-8/15 0 11 0 11
8/16-8/31 0 0 0 0.
9/1-9/1.5 1 0 0 1
9/16-9/31 0 2 3 5
rn Subtotal 1 43 . 3 47
I
I ........
~lkeetna to Devil Canyon 5/1-5/15 0 0 0 0
5/16-6/31 0 0 0 0
6/1-6/15 0 0 0 0
6/16-6/30 0 0 0 0
7/1-7/15 0 0 0 0
7/16-7/31 0 0 0 0
8/1-8/15 0 0 0 0
8/16-8/31 2 0 0 2
9/1-9/15 3 1 0 4
9/16-9/30 0 2 4 6
Subtotal 5 3 4 12
TOTALS 6 46 7 59
3.9 THREESPINE STICKLEBACK
3.9.1 Abstract
Threespine stickleback, Gasterosteus aculeatus L., were widespread and
abundant at habitat locations in the Susitna River below Devil Canyon during
the early summer. The catch in minnow traps at habitat locations generally
declined after late June. The 28,953 sticklebacks captured during the course
of this study were collected at 37 of the 44 habitat locations. The highest
catches per unit effort were recorded at Slough 6A {R.M. 112.3), Alexander
Creek (R.M. 10.1), Kroto Slough (R.M. 30.1) and Sunshine Creek (R.M. 85.7).
Threespine sticklebacks were caught at a site two miles below the confluence
of Portage Creek (R.M. 146.9), which is fifty miles further upriver than
previously reported. Total lengths of fish captured ranged from 18 to 96 mm
with a mean of 79 mm. Length frequency analysis showed the presence of 0+,
I+, and II+ age classes.
3.9.2 Introduction
The threespine stickleback, Gasterosteus aculeatus L., is widely distributed
in the northern hemisphere with the exception of the arctic coasts of Siberia
and North America (Scott and Crossman, 1973). It occurs in both fresh and
salt water and usually is not found more than a few hundred kilometers from
the coast. In Alaska, the threespine stickleback occurs in all coastal areas
from Dixon Entrance to Bristol Bay, on the Seward Pen1nsula, on St. Lawrence
Island, and in Simpson Lagoon on the arctic coast (Morrow, 1980).
E-3-116
Three forms are generally recognized within the Gasterosteus acul eatus complex
(McPhail and Lindsey, 1970). There is a partially plated freshwater form
(called leiurus), a heavily plated marine form (trachurus), and an inter-
mediate form (semiarmatus).
Threespine stickleback generally inhabit shallow areas in bays, estuaries, and
rivers, often in association with aquatic vegetation. Wintering areas tend to
be in deeper waters. Stickleback feed mainly on small crustaceans and insects
and are fed upon themselves by birds and other fish. · There has been concern
regarding the threespine stickleback as a potential competitor with sockeye
salmon (Oncorhynchus nerka) fry but recent studies (Cannon, 1981; Wooton,
19~6) have indicated that competition to the detriment of sockeye fry does not
often occur. There is evidence, in artificial situations such as the
reclamation and re-stocking of lakes with stocks of rainbow trout (Salmo
gairdneri) not accustomed to sharing habitat with stickleback, that the
presence of stickleback may be detrimenta 1 to the trout population ( Enge 1,
1971).
Three age classes are present in most populations of threespine stickleback in
the summer. Sexual maturity is generally reached at age II but may be reached
at age I or even age 0. Breeding occurs in the spring and summer and is
characterized by an elaborate courtship ritual in which the strongly terri-
torial male constructs a nest on the bottom, induces a female to deposit eggs
within the nest, and then tends the fertilized eggs. The eggs hatch in one to
two weeks. Fecundity ranges from 50 to 200 eggs per spawning. Both sexes may
spawn more than once during a season. There is often a high mortality after
spawning (Cannon 1981; Wooton, 1976).
E-3-117
3.9.3 Methods
Threespine stickle.back were collected with minnow traps of either 3.2mm
(one-eight inch) or 6.4 mm (one-quarter inch) mesh size baited with salmon
eggs and placed at each habitat location. Sticklebacks were also taken by
beach seine and dip net. Stickleback captured were measured for total length
in millimeters (mm) and then released.
3.9.4 Results and Discussion
3.9.4.1 Distribution and Relative Abundance
The 28,953 threespine sticklebacks collected during this study were captured
at 37 (84 percent) of the 44 habitat locations in the Cook Inlet to Devil
Canyon reach of the Susitna River, from Alexander Creek (RM 10.1) to the
Mainstem Su Island Site (RM 146.9). The fish captured at R.M. 146.9 repre-
sents a range extension from that reported by Scott and Crossman (1973) and
Morrow (1980), who indicate a range extending up the Susitna River only to a
point below the confluence of the Talkeetna River.
The number of habitat locations producing threespine stickleback was highest
in June, 84 percent, and declined steadily to 16 percent in September. This
is an indication of movement during spring months for spawning. All habitat
locations in the Cook Inlet to Talkeetna reach, except Goose Creek 2, produced
stickleback. Twelve of the 17 habitat locations in the Talkeetna to Devil
Canyon reach produced catches (Figures E.3.9.1 and E.3.9.2).
E-3-118
rn
I w
I ...... ......
I.D
100 -THREESPINE STICKLEBACK
-
-p
E -
A 75 c
.....
-
E -
N -
T -
-
I 50 -
N .-
c -
I -
0 -
E 25 -
N -c -
E --
0 l T I . I I T T I I
JUNE JULI AUGUST SEPTEMBER
Figure £.3.9.1. Percent incidence of threespine stickleback captured at habitat location sites on the
Susitna River between Cook Inlet and Talkeetna, June to September~ 1981.
fT'I
I w
I
I--'
N a
80 THAEESPINE STICKLEBACK -
p -
E
A 60 c -
E
'N -T
I 40 -
N c -I
0
E 20 -
N c
E -
0 I I I I I I I I I
JUNE JULY AUGUST SEPTEMBER
Figure E,3.9.2. Percent incidence of threespine stickleback captured at habitat location sites on the
Susitna River between Talkeetna and Devil Canyon, June to September, 1981.
Catch per unit effort rates in the Cook Inlet to Talkeetna reach were higher
overall, than those in the Talkeetna to Devil Canyon reach, with as high as
88.4 stickleback per trap at Anderson Creek and 77.3 stickleback per trap at
Slough 6A during June (Appendix Tab1e EB-9).
3.9.4.2 Age, Sex, and Length Composition
Total lengths were recorded from 2,273 threespine stickleback. Lengths ranged
from 18 to 96mm with a mean of 79.2mm. The length frequency (Figure E.3.9.3)
shows the presence of three age classes (0+, I+, and II+) with the length
ranges of the respective age classes being 0-40mm, 40-70mm, 70-100mm.
Sexually mature stickleback were all in the 70-100mm length range (Age II+).
No sex information was collected.
E-3-121
>-u z
50
40
w 30
=:J
0 w
~ 20
LL
0
Age 0+ .......__....., Age II t
I
0
I
10
I
20
I
30
I
40 50
LENGTH
I
I I
60 70
Cmm)
I
80
I
90
figure E.3.9.3. len~th frequency composition of threespine stickleback captured at
habitat location sites on the Susitna River between Cook Inlet and
Devil Canyon~ June to October~ 1981.
I
100
3.10 COTTI DS
3.10.1 Abstract
The slimy sculpin, Cottus congnatus Richardson, was captured at 41 of the 44
habitat locations in the Cook Inlet to Devil Canyon reach on the Susitna
River. Mouths of clearwater tributaries provided the largest catch per unit
effort. Total lengths were measured on 476 slimy sculpins and the mean length
was calculated to be 69.7 mm.
3.10.2 Introduction
All sculpin species captured in the Susitna River have been consolidated under
the general heading of cottids. The slimy sculpin, Cottus congnatus
Richardson, is the major sculpin species found within the Susitna River
drainage. There is a possibility that the coastal range sculpin, Cottus
aleuticus Gilbert, the sharpnose sculpin, Clinocottus acuticeps Gilbert, and
the Pacific staghorn scuTpin, Leptocottus armatus Girard, may also be present
in the lower Susitna River.
The slimy sculpin range covers all of Alaska, most of Canada, and as far south
as Virginia. It also extends to the extreme northeastern reaches of Siberia
(Scott and Crossman 1973).
Investigations into the life history of slimy sculpins by Morrow (1980)
indicate that these small bottom-dwelling fish are tadpole shaped with a
rounded caudal fin and vary in color from solid brown to a mottled gray-green.
E-3-123
Two distinguishing marks are double chinpores and a short lateral line ending
midway under the second dorsal fin. Slimy sculpin mature between Age II and
IV and can live to Age VII (Craig and Wells, 1976). Spawning occurs in spring
at breakup. The male picks the nest site which is usually in shallow water
with a sandy substrate. The fema 1 e 1 ays an average of 150 to 600 eggs. More
than one female may spawn in a nest~ but only one male will fertilize the
eggs. The incubation time for the eggs is about 30 days. Slimy sculpin feed
mainly on insect larvae, nymphs, and fish larvae.
3.10.3 Methods
Cottids were collected with baited minnow traps, beach seines and electro-
shockers. All but two percent of the cottids captured were caught in minnow
traps. All cottid lengths were measured as total length in millimeters (mm).
3.10.4 Results and Discussion
3.10.4.1 Distribution and Relative Abundance
Cottids were captured at 40 (91%) of the 44 habitat locations in the Cook
Inlet to Devil Canyon reach of the Susitna River between November, 1980 and
October, 1981. The percentage of habitat locations producing catches in the
Cook Inlet to·Talkeetna reach ranged from a high of 70 percent in late August
to a low of 42 percent in late July (Figure E.3.10.1). For the Talkeetna to
Devil Canyon reach there was a high of 76 percent in early July and a low of
35 percent in late September (Figure E.3.10.2).
E-3-124
[TJ
I w
I
I--'
N
0"1
80 COTTID --·········. ··-··------------------.
p
E
A 70 c
E
N
T
I 60
N c
I
0
E 50
N c
E
40 I I I I I I I I
JUNE JULY AUGUST SEPTEMBER
~-------~~····------··---------···-··-·----~---------·------------~
Figure E.3.10.1. Percent incidence of cottids captured at habitat locat·ions on the Susitna River
between Cook Inlet and Talkeetna, ·June to September, 1981.
ITl
I w
I .......
N
0'1
80 COTTID -
p
E -
R c
E 60 N
-
T
I -
N c
I l!O 0 -
E
N c -
E
20 I I
JUNE
I
'
I I
. JULY AUGUST
1 1 I
SEPTEMBER
Figure E.3,10.2. Percent incidence of cottids captured at habitat location sites on the Susitna River
between Talkeetna and Devil Canyon, June to September~ 1981.
Cottid catches per unit effort are shown in Appendix Table EB-10. Habitat
1 ocati ons associ a ted with clearwater tributaries consistently produced the
highest catches per unit effort, with a high at Birch Creek (RM 89.2) in early
July of 2.0 cottid per trap.
3.10.4.2 Age, Length, and Sex Composition
Total lengths were recorded from 476 cottids. Lengths ranged from 22-118mm,
with a mean of 69.7mm. Approximately one half of the specimens examined were
in the 65-85mm range with 13 percent in the 70-75mm range (Figure E.3.10.3}.
No age or sex data was obtained.
E.-3-127
>-u z w
=:)
0 w
~
LL
I'T'1
I w ~ I
1--'
N
00
25
20
15
10
5
0
I
0
I
12
I
24
I
36
I
48 60
LENGTH
I I
72 84
Cmm)
t
96
I
108
I
120
figure E.3.10.3, Length frequency composition of cottids captured at habitat location sites on
the Susitna River between Cook Inlet and Devil Canyon, June to October, 1981.
3~11 ARCTIC LAMPREY
3.11.1 Abstract
Forty Arctic 1 amprey, Lal'npetra j aponi ca Martens, were captured at 14 habitat
location sites between Alexander Creek (R.M. 10.1) and Whiskers Creek (R.M.
101.4) during the period June through September. The widest distribution was
recorded in early September when 1 ampreys were present at 5 of the 18 habitat
locations below Talkeetna. Lengths ranged from 115 to 315 mm. Thirty one
percent of the 41 Arctic lampreys captured were greater than 183 mm in length
and are presumed to be the anadromous form as the strictly freshwater form
does not attain this size.
3.11.2 Introduction
The Arctic lamprey, Lampetra japonica Martens, one of four lamprey species
found in Alaska, was observed in studies conducted on the Susitna River in
1981. Pacific lamprey, Entosphenics tridentatus Gairdner, is a strictly
anadromous species and has been reported to range into the lower Susitna River
(Morrow, 1980). No specimens of this species were observed during this study.
The Arctic lamprey is distributed in Alaska from the Kenai Peninsula north and
in the arctic waters of. Canada, Norway, Siberia, the Kamchatka Peninsula,
Japan, and Korea (Scott and Grossmann, 1973).
The Arctic lamprey is identifiable by a long, cylindrical, eel-like body with
. .
seven pairs of gill openings, an oral sucker, and a single median nostril on
E-3-129
the dorsal side of the head. The posterior portion of the body has two dorsal
fins and a small anal fin (Morrow, 1980).
Spawning occurs in spring in str.eam areas of low to moderate flow with both
sexes participating in nest building. Females lay up to 100,000 eggs in small
gravel substrate. The sex of Arctic lampreys can be determined by visual
observation. The male is distinguished by higher dorsal fins, no obvious anal
fin, and the presence of genital papilla.
After several weeks in the gravel, the eggs develop into a larvae stage
(ammocoete) which spends one to four years burrowed into the soft substrate
feeding on microscopic plants and animals (Buchwald, 1968). The ammocoetes
undergo metamorphosis in the fall and migrate as young adults to the sea, or
to lakes and larger rivers. After an indefinite period, the adults migrate
upstream to spawn.
Some popu.lations of Arctic lampreys are composed of both anadromous and
completely freshwater fonns. The anadromous form is parasitic and attaches
itself to the host by an oral sucker, penetrating the scales and skin with its
rasping teeth to draw body fluids and b 1 ood from the host. Hosts for this
species include adult salmon, trout, whitefish, ciscoes, longnose suckers,
burbot, and threespine stickleback. (Heard, 1966). The freshwater form has
been reported as parasitic (Heard, 1966) and non-parasitic (McPhail and
Lindsey, 1970).
E-3-130
The freshwater form of Arctic lamprey rarely exceeds 180 mm in length. The
anadromous form in the United States reaches up to 410 mm in length while
individuals 625 mm long have been reported in the USSR (Scott and Crossmann,
1973).
3 .11.3 Methods
All arctic lamprey were captured in minnow traps baited with preserved salmon
roe. Catch per unit effort values are expressed as catch per trap day.
3.11.4 Results and Discussion
3.11.4.1 Distribution and Relative Abundance
Forty-one Arctic lamprey were captured at 14 habitat location sites, between
RM 10.1 and RM 101.4, sampled from November, 1980, through September, 1981.
Tab 1 e E. 3 .11.1 presents the catch per unit effort for Arctic 1 amprey by
habitat location site and date for· those sites which captured this species.
Rustic Wilderness (RM 58.1) was the only habitat location site to produce
Arctic lamprey during the winter surveys. One lamprey was captured at this
site. A 11 other 1 amprey were co 11 ected during the summer surveys.
The highest catch was recorded at ~Jhiskers Creek (RM 101.4) in early July
where 0.5 lampreys per trap were captured. It is presumed that these lampreys
were all ammocoetes as they had an estimated length of 70 mm, and all were
captured in a single trap which had become buried in the silt. Figure
E.3.11.1 presents the percent of habitat location sites sampled between Cook
E-3-131
Table E.3.11.1. Arctic lamprey, catch per unit effort at habitat location sites
on the Susitna River, January to September, 1981.
River Catch per
Habitat Location Site Mile Stud:t: Period N trap day
Rustic Wilderness 58.1 January 1 0.1
Alexander Creek A 10.1 June 1-15 2 0.2*
Montana Creek 77.0 June 16-30 1 0.1
Anderson Creek 23.8 July 1-15 I O.I
Mid Kroto Slough 36.3 July 1-15 1 0.1
Goose Creek 1 72.0 July 1-15 1 0.1
Whiskers Creek 101.4 July 1-15 10 0,5
Oeshka River C 40.6 July 16-31 2 0.1
Montana Creek 77.0 July 16-31 1 0.1
Mainstem Slough 31.0 August 1-15 2 0 .I*
Little Willow Creek 50.5 August 16-31 1 0.1
Goose Creek 1 72.0 August 16-31 1 0.1
Montana Creek 77.0 August 16-31 3 0.2
Whiskers Creek 101.4 August 16-31 1 0.1
Alexander Creek B 10.1 September 1-15 2 0.2*
Alexander Creek C 10.1 September 1-15 1 0.1 *
Deshka River A 40.1 September 1-15 1 0.1*
Deshka River B 40.6 September 1-15 1 0.1
Little Willow Creek 50.5 September 1-15 7 0.4
Goose Creek 1 72.0 September 16-31 1 0.1
* Arctic lamprey measured greater than 180 mm.
E-3-132
30 ARCTIC LRMPREI -
-
p -
E
A -
c -
E 20 N -
T -
-
I
I'T1 N -
I c w
I -
....... I 10 w w
0 -
E -
N -c
E -
-
0 I I I I I I I I -1
JUNE JULI AUGUST SEPTEMBER
figure E.3.ll,l. Percent incidence of Arctic lamprey captured at habitat location sites on the Susitna
Rivr ~en Cook Inlet and Talkeetna, June to September, 1981.
Inlet and Talkeetna which produced lamprey from June through September, 1981.
The highest frequency was recorded during the September 1 to 15 sampling
period when 27.8 percent of all sites surveyed produced lamprey. All pro-
ductive habitat location sites surveys during this period occurred at tribu-
tary sites downstream of river mile 50.5. The lowest incidence of capture for
this species, 3.7 percent, was observed in the July 16-31 sampling period.
3.11.4.2 Age, Length, and Sex Composition
The percent length frequency distribution for measured Arctic lamprey is
presented in Figure E.3.11.2. Thirty-one percent of all Arctic lampreys
measured ranged from 183 to 320 mm. This range is above the maximum recorded
length for the strictly freshwater stock of Arctic lamprey reported by Scott
and Crossmann (1973) and McPhail and Lindsey (1970). It is presumed that
these large 1 ampreys were the anadromous form. No necropsies were performed
to determine sexual maturity. All lampreys greater than 180 mm in length were
captured downstream of river mile 40.6.
E-3-134
rr1
I w
I
1-1
w c..n
>-u z
25
20
w 15
:::::)
0 w
£Y 10
LL
5
0
I I I
nn
I I I I I I I
0 35 70 105 140 175 210 245 280 315 350
LENGTH Cmm)
Figure E.3.11.2. Length frequency composition of Arctic lamprey captured at habitat location
sites on the Susitna River between Cook Inlet and Devil Canyon, June to
September, 1891.
3.12 NORTHERN PIKE
3.12.1 Abstract
One nine year old female northern pike, Esox lucius L., measuring 715 mm fork
length was captured in Kroto Slough (R.M. 36.3) on September 11, 1981.
Northern pike are expanding their range from the Bulchitna Lake area and this
is the first one recorded in the mainstem Susitna River.
3.12.2 Introduction
Northern pike, Esox lucius Linnaeus, is a freshwater fish having a circumpolar
distribution in the northern hemisphere and a southern range to Nebraska in
the United States and into northern Italy in Europe (Scott and Crossman,
1973). Pike are an important commercial species in Canada and are prized as a
sport fish in many other areas.
Northern pike are distinguished by a long, flat, duck-bill snout with a large
mouth and sharp teeth, and an extreme posterior positioning of the dorsal and
anal fins. Pike characteristically inhabit clear, warm areas of rivers and
lakes having low velocities and heavy emergent vegetation.
Spawning occurs immediately following breakup in the spring in heavily vege-
tated shallow waters of marshes, rivers and lakes. Up to 600,000 demersal,
adhesive eggs are randomly scattered and settle on aquatic plants and the
substrate. Young pike merge in one to two weeks and feed on zooplankton and
sma 11 aquatic insects fa 11 owing the absorption of the yo 1 k sac. Sma 11 fish
E-3-136
soon enter the diet of juvenile northern pike and become the predominant food
source as the pike reach 50 mm in length. Northern pike reach a length of
150 mm by the end of the first summer and this rapid growth continues through
the first three years of life. A. slower length increase and faster weight
increase is observed following sexual maturity. In northern waters, growth
rates are less than those recorded in southern areas but an increased
longevity is observed (Morrow, 1980). Morrow reports that northern pike have
been reported to 1 ive up to 26 years and attain weights up to 60 pounds.
However he a 1 so states that unconfirmed reports of fish weighing up to 170
pounds have been ·recorded.
Northern pike were illegally transplanted into the Susitna River drainage
during the 1950's by private individuals and have been reported in Bulchitna
Lake, Hewitt Lake, and Whiskey Lake, in the Yentna River drainage (Kubik,
personal communication).
3.12.3 Methods
One northern pike was captured September 11, 1981 in a gillnet set overnight,
500 feet upstream of the mouth in Kroto Slough (RM 30.1).
3.12.4 Results and Discussion
E-3-137
3.12.4.1 Age, Length, and Sex Composition
The northern pike captured was a female measuring 715 mm fork length. Scale
analysis indicated the fish to be nine years old. This is the first northern
pike recorded in the mainstem Susitna River. They have been expanding their
range from the Bulchitna Lake area in recent years.
E-3-138
4. LITERATURE CITED
Alt, K.T. 1971. Distribution, movements, age and growth, and taxonomic status
of whitefish (Coregonus sp.) in the Tanana-Yukon drainage and North
Slope. Alaska Department of Fish and Game. Federal Aid in Fish
Restoration Study. Annual Progress Report. Project F-9-3, Job R-II-F.
12:19-31.
Alt, K.T. 1973. Contributions to the biology of the Bering cisco (Coregonus
laurettae) in Alaska. J. Fish. Res. Bd. Canada 30 (12-1): 1885-1888.
Alt, K.T. 1979. Contributions to the life history of the humpback whitefish
in Alaska. Transactions of the American Fisheries Society. 108(2):
156-160.
Andrews, R.E. 1970. The Arctic grayling in Alaska. Alaska Department of Fish
and Game, Wildlife Notebook Series, Fishes: No. 2.
Armstrong, R.H. 1971. Life history of Dolly Varden. Alaska Department of
Fish and Game. Fed. Aid. Fish. Restor., Ann. Progress Rept., Project
F-9-3, Rept. R-IV-A. 12:1-11.
Armstrong, R.H., and J.E. Morrow, 1980. The Dolly Varden charr. Pages 99-140
..1.!!. E.K. Balon (ed}. Charrs: salmon fishes of the genus Salvelinus. W.
Junk, The Hague, Netherlands.
E-4-1
Bailey, M.E. 1969. Age, growth, reproduction, and food of the burbot, Lata
lata Linnaeus, in southwestern Lake Superior, U.S. Fish and Wildlife Ser.
Ashland, Wis. p. 667-674.
Barrett. B.M., 1975a. December investigations on the upper Susitna River
watershed between Devil Canyon and Chulitna River. Alaska Department of
Fish and Game, Commercial Fisheries (unpublished). 8 p.
Barrett, B.M., 1975b. January investigations in the upper Susitna River
watershed between Devil Canyon and Chulitna River. Alaska Department of
Fish and Game, Commercial Fisheries (unpublished). 10 p.
Barrett, B.M., 1975c. February investigations in the upper Susitna River
watershed between Devil Canyon and Chulitna River. Alaska Department of
Fish and Game, Commercial Fisheries (unpublished). 10 p.
Berg, L.D. 1948. Freshwater fishes of the U.S.S.R. and adjacent countries.
Guide to the fauna of the U.S.S.R. No. 27. Vol. 1, 4th ed. Akad. Nauk.
SSSR Zool. Inst., Moscow. 1962 Translation. Office of Technical
Services, U.S. Dept. of Commerce, Washington, D.C. 504 pp.
Blackburn, J.E. 1978. Pelagic and demersal fish assessment in the lower Cook
Inlet estuary system. Annual Report. ·Alaska Department of Fish and
Game. 293 pp.
E-4-2
Blackett, R.F. 1969. Spawning behavior and early life history of anadromous
Dolly Varden, Salvelinus malma (Walbaum), in southeastern Alaska. Alaska
Department of Fish and Game. Res. Rept. 6:1-85.
Budd, J. 1957. Movements of tagged whitefish in northern Lake Huron and
Georgian Bay. Trans. Am. Fish. Soc. 86:128-134.
Cannon, R. 1981. Summer feeding and di stributi anal behavior of threes pine
stickleback, Gasterosteus acul eatus, in Lower Jean Lake, Alaska, 1974.
M.S. Thesis, University of Alaska, Fairbanks.
Chen, L.C. 1969. The biology and taxonomy of the burbot, Lata lata leptura,
in interior Alaska, Dept. of Wildlife Manag. Univ. of Alaska, Nu.
11:1-51.
Craig, P.C., and J. Wells. 1976. Life history notes for a population of
slimy sculpin (Cottus cognatus) in a.n Alaskan arctic stream. J. Fish.
Res. Bd. Canada. 33(7):1639-1642.
Delaney, K.J., K. Hepler, and K. Roth. 1981. Deshka River chinook and coho
salmon study. Alaska Department of Fish and Game. Federal Aid in Fish
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Engel, L.J. 1971. Evaluation of sport fish stocking on the Kenai Peninsula-
Cook Inlet areas. Alaska Department of Fish and Game. Federal A;.d in
Fish Restoration, Annual Report of Progress, 1970-1971. Project F-9-3,
Job No. G-II-F. Vol. 12:1-34.
E-4-3
Engel, L.J. and D.A. Watsjold. 1978. Fisheries studies prepared for the
Alaska Capital Site Planning Commission. Alaska Department of Fish and
Game, Division of Sport Fish. 122 pp.
Furniss, R.A. 1974. Inventory and cataloging of Arctic area waters. Alaska
Department of Fish and Game. Fed. Aid Fish Restor., Ann. Performance
Rept. Project F-9-6, Job G-I-1, 15:1-45.
Green, G.H., T.H. Northcote, G.F. Hartman, and C.C. Lindsey. 1966. Life
histories of two species of catostomid fishes in Sixteenmile Lake,
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Fish. Res. Bd. Canada 23(11):1761-1788.
Hanson, M., and S.U. Qadri. 1979. Morphology and diet of young-of-the~year
burbot, Lata lata, in the Ottawa River. Dept. of Biol, Univ. of Ottawa,
Ottawa, Ontario. Vol. 94:311-314.
Heard, W.R. 1966. Observations on lampreys in the Naknek River system of
southwest Alaska. Copeia 1966 (2):332-339.
Hewson, L.C. 1955. Age, maturity, spawning, and food of burbot, Lata lota, in
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E-4-4
Kennedy, W.A. 1953. Growth, maturity, fecundity and mortality in the rela-
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Kepler, P.P. 1973. Population studies of northern pike and whitefish in the
Minto Flats complex with emphasis on the Chatanika River. Alaska Depart-
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Kogl, D.R. 1971. Monitoring and evaluation of Arctic waters with emphasis on
the North Slope drainages: Colville River study. Alaska Deptartment of
Fish and Game. Fed. Aid Fish Restor., Ann. Progress Rept., Project F-9-3,
Job G-III-A. 12:23-61.
Kubik, S., and R.D. Wadman. 1978. Inventory and cataloging of sport-fish
waters of the lower Susitna River and central Cook Inlet drainages.
Alaska Department of Fish and Game. Fed. Aid in Fish Restor., Annual
Report of Progress, 1978-1979, Project F-9-11, 20{G-I-H). 21 pp.
Lindsey, C.C. 1956. Distribution and taxonomy of fishes in the Mackenzie
drainage of British Columbia. J. Fish. Res. Bd. Canada. 13(6):759-789.
McCart, P., P. Craig, and H. Bain 1972. Report on fisheries investigations in
the Sagavanirktok River and neighboring drainages. Alyeska Pipeline
Service Co. 165 pp.
E-4-5
McCrimmon, H.R. 1959. Observations on spawning of burbot in Lake Simcoe,
Ontario. J. Wildl. Mgt. 23(4):447-449.
~kLean, R.F., and K.J. Delaney. i978. Alaska's fisheries atlas. Vol. 2.
Alaska Department of Fish and Game. 43 pp + 153 maps.
McPhail, J.D. 1966. The Coregonus autummalis complex in Alaska and north-
western Canada. J. Fish. Res. Bd. Canada. 23(1):141-148.
McPhail, J.D., and C. C. Lindsey. 1970. Freshwater fishes of northwestern
Canada and Alaska. Bull. Fish. Res. Bd. Canada 173. 381 pp.
Mills, M.J. 1980. Alaska statewide harvest study -1980 data. Alaska Depart-
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Vol. 22:1-31.
Morrow, J.E. 1980. The freshwater fishes of Alaska. Alaska Northwest Pub-
lishing Company, Anchorage. 248 pp.
Pearse, G.A. 1974. A study of typical spring fed streams of interior Alaska.
Alaska Department of Fish and Game. Annual Performance Report. Project
F-9-6, Job G-III-G. 15:1-29.
Reed, R.J. 1964. Life history and migration patterns of Arctic grayling,
Thymallus arcticus (Pallas), in the Tanana River drainage of Alaska.
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E-4-6
Reed, R.J. 1976. Age and growth of Prince of Wales, Alaska, Dolly Varden,
Salvelinus malma (Walbaum), and rainbow trout, Salmo gairdneri (Richard-
son). Trans. Amer. Fish. Soc. 96(2):223-224.
Riis, J.C. and N.V. Friese. 1978. Fisheries and habitat investigations of
the Susitna River-A preliminary study of potential impacts of the Devil
Canyon and Watana hydroelectric projects. Alaska Department of Fish and
Game, Division of Sport and Commercial Fisheries. 116 pp.
Roguski, E.A., and E. Komarek, Jr. 1971. Monitoring and evaluation of Arctic
waters with emphasis on North Slope drainages: Arctic wildlife range
study. Alaska Dept. Fish Game Fed. Aid Fish Restor., Ann. Progress
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Fish. Res. Bd. Canada 184. Ottawa. 966 pp.
T.E.S. (Terrestrial Environmental Specialists, Inc.). 1981. Life history and
ecology of selected fishes that occur in the Susitna River. Phoenix, New
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Townsend, A.J., and P.P. Kepler. 1974. Population studies of northern pike
and whitefish in the Minto Flats complex with emphasis on the Chatanika
River. Alaska Department of Fish and Game. Federal Aid in Fish Restor-
ation. Annual Performance Report. Project F-9-6, Job G-11-J. 15:59-79.
E-4-7
Vascotts, G.L. 1970. Summer ecology and behavior of the grayling of McManus
Creek, Alaska. M.S. Thesis, University of Alaska, Fairbanks. 132 pp.
Volodin, V.M., and M.N. Ivanova. 1969. Way of life, growth and feeding of
the young burbot in Rybinsk Reservoir. Fishery Res. Bd. of Sport Fishery
and Wi1dl. Wash. D.C. p. 1-14.
Watsjold, .D.A. 1977. Inventory, cataloging and population sampling of the
sport fish and sport fish waters in the upper Cook Inlet. Alaska
Department of Fish and Game. Fed. Aid Fish Restor. Annual Report of
Progress, 1976-1977. Project F-9-9, Vol. 18, No. G-1-D. 48 pp.
Williams, F.J. 1968. Inventory and cataloging of sport fish and sport fish
waters of the Copper River and Prince William Sound drainages, and the
upper Susitna River. Alaska Department of Fish and Game. Federal Aid in
Fish Restoration Study. Annual Progress Report 1967-1968, Project
F-5-R-9, Job 14-A. 9:241-256.
Wootton, R.J. 1976. The biology of the sticklebacks. Academic Press,
London. 387 pp.
Yoshihara, H.T. 1973. Monitoring and evaluation of Arctic waters with empha-
sis on North Slope drainages. A. Some life history of Arctic char.
Alaska Department of Fish and Game. Fed. Aid Fish Restor., Ann. Progress
Rept., Project F-9-5, study G-III-A, 14:1-63.
E-4-8
5. ACKNOWLEDGEMENTS
This study was funded by the State of Alaska, Alaska Power Authority. It was
conducted by the following Alaska Department of Fish and Game staff
biologists:
Kevin Delaney, Project Leader
Resident and Juvenile Anadromous Fisheries Project
Drew Crawford
Larry Dugan
Stephen Hale
Karl Kuntz
Bob Marshall
James Mauney
James Quinn
Kent Roth
Paul Suchanek
Richard Sundet
Mike Stratton
E-5-1
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Alexander
JAN
MAR
E JUN
E JUL
L JUL
E AUG
L AUG
E SEP
Alexander
JAN
MAR
E JUL
L JUL
E AUG
L AUG
E SEP
MINNOW TRP
(CTCH/TRP)
TROT LINE
(CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
BEACH SN
(CTCH/TME)
Creek Site A, R.M. 10.1, T.R.M. o.o. S/15N/07W/06/DCA
X X 0 0 0
·x X X 0 0
X 0 0 0 0
X X 0 0 0
X X 0 0 0
X X 0 0 0
X X 0 0 0
X X 0 0 0
Creek Site B, R.M. 10.1, T.R.M. 2.0, S/16N/07W/32/CCB
0 X 0 0 0
X X X X 0
X X 0 X 0
X X 0 X 0
X X 0 0 0
X X 0 0 0
X X 0 0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP NET
(CTCH)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
BEACH SN
(CTCH/TME)
Alexander Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
L JUN X X 0 0 0
E JUL X X 0 0 X
L JUL X X 0 0 0
E AUG X X 0 0 0
L AUG X X 0 0 0
E SEP X X X 0 X
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUN X X X 0 0
L JUN X X X 0 0
E JUL X X X 0 0
L JUL X X 0 0 0
E AUG X X 0 0 0
L AUG X X X 0 0
E SEP X X X 0 0
L SEP X X X 0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o indicate that this gear type was not utilized during the sampling period
DIP NET
(CTCH)
0
0
0
X
X
0
0
0
0
0
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Kroto
E JUN
L JUN
E JUt
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
Slough Mouth, R.M. 30.1,
X X
X X
X X
X X
X X
X X
X X
X X
GILL NET
(CTCH/24H)
T.R.M. 2.0,
X
0
X
X
0
0
X
0
HOOK&LINE
(CTCH/HR.)
BEACH SN
(CTCH/TME)
S/17N/07W/01/DBC
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
E JUN X 0 0 0 0
L JUN X X X 0 0
E JUL X X X 0 0
L JUL X X 0 0 0
E AUG X X 0 0 0
E SEP X X 0 0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
X
0
o indicate that this gear type was not utilized during the sampling period
DIP NET
(CTCH)
0
0
0
0
.o
0
0
·o
0
0
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period. and gear type
on the lower Susitna River, 1980-1981~
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
BEACH SN
(CTCH/TME)
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E JUL X X X 0 X
L JUL X X 0 0 0
E AUG X X 0 0 0
L AUG X X X 0 X
E SEP X X 0 0 X
L SEP X X X 0 0
Deshka River Site A, R.M. 40.6, T.R.M. 0.0~ S/19N/06W/35/BDA
MAR X X X 0 0
MAY 0 0 X 0 0
L JUN X X 0 0 0
E JUL X X 0 0 0
L JUL X X 0 0 0
E AUG X X 0 0 0
L AUG X X 0 0 0
E SEP X X 0 0 0
L SEP X X X 0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
o indicate that this gear type was not utilized during the sampling period
DIP NET
(CTCH)
0
0
0
0
·o
0
0
0
0
0
.o
0
'·0
0
:
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Deshka
MAR
MAY
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
Deshka
MAR
MAY
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCU/TRP) (CTCH/LNE)
River Site B, R.M. 40.6,
X X
X 0
X X
X X
X X
X X
X X
X X
X X
River Site C, R.M. 40.6,
X X
0 0
X x·
X X
X X
X X
X X
X X
GILL NET
(CTCU/24H)
T.R.M. 1.0,
X
X
0
0
0
0
0
0
X
T.R.M. 3.5,
0
X
0
0
0
0
0
X
HOOK&LINE
(CTCH/UR)
BEACH SN
(CTCH/TME)
S/19H/06W/26/BCB
0 0
0 0
0 0
0 0
0 0
0 0
0 0
X 0
0 0
S/19H/06W/14/BCA
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
X
0
0
0
0
0
0
0
X
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP·NET
(CTCH)
0
0
p
p
·.o
0
0
0
0
0
0
0
0
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Lower
L JUN
E JUL
L JUL
E AUG
Little
MAR
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
· L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
Delta Island, R.M. 44.0,
X X
X X
X X
X X
Willow Creek, R.M. 50.5,
X X
X X
X X
X X
X X
X X
X X
X X
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
S/19N/05W/19/ACB
X 0
X 0
0 0
0 0
S/20N/05W/27/AAD
X 0
0 X
0 X
0 0
0 0
0 0
0 0
0 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
X
0
0
0
0
X
X
0
0
Values - x indicate that this gear type was utilized during the sampling period ·
o indicate that this gear type was not utilized during the sampling period
DIP·NET
(CTCH)
9
.o
0
0
0
.P
0
0
·o
<?
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
ori the lower Susitna River, 1980-1981.
SAMPLE
Rustic
NOV
JAN
MAR.
MAY
L JUN
L JUL
E AUG
L AUG
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
Wilderness • R.M. 58.1, S/21N/05W/25/CBD
X 0 0 0
X X 0 0
X X X 0
X X X 0
X X 0 0
X X X 0
X X X 0
X X X 0
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
NOV X 0 0 0
DEC X X 0 0
MAY 0 0 0 0
L JUN X X 0 0
E JUL X X 0 0
L JUL X X X 0
E AUG X X 0 0
L AUG X X 0 0
L SEP X X X 0
E OCT 0 0 0 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
X
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
X
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
X
0
0
X
0
0
0
0
o indicate that this gear type was not utilized during the sampling period
DIP. NET
(CT<;H)
0
0
~
·0
0
·o
0.
0
0
0
0
Q
0
.o
0·
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Caswell
NOV
MAY
L JUN
E JUL
L JUL
E AUG
L AUG
L SEP
E OCT
Slough
E AUG
L AUG
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
Creek, R.M. 63.0. S/21N/04W/06/BDD
X 0 0
X 0 X
X X 0
X X 0
X X X
X X 0
X X 0
X X X
0 0 0
West Bank, R.M. 65.6, S/22N/05W/27/ADC
X X X
X X 0
X X X
HOOK&LINE
(CTCH/HR)
0
X
0
0
0
0
0
0
0
0
0
0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
X
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP·~ET
(CTCU)
0
0
0
o.
·o
0
0
0
0
0
·O
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/BR)
BEACH SN
(CTCH/TME)
ELECTRO
(CTCH/HR)
GILL DRFT
(CTCH/DRF)
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
DEC X X 0 0 0 0
JAN X X 0 0 0 0
L JUN X X 0 0 0 0
E JUL X X X 0 0 0
L JUL X X 0 0 0 0
E AUG X X 0 o' 0 0
L AUG X X 0 0 0 0
L SEP X X X 0 0 X
E OCT 0 0 0 0 0 X
Goose Creek 1, R.M. 72.0, S/23N/04W/31/BBC
L JUN X X 0 0 0 0
E JUL X X X 0 X 0
L JUL X X 0 0 0 0
E AUG X X 0 0 0 0
L AUG x. X 0 0 0 0
L SEP X X X 0 0 X
Values - x in4icate that this gear type was utilized during the sampling period
o'indicate that this gear type was not utilized during the sampling period
0
0
0
0
0
0
0
0
0
0
X
0
0
0
X
DIP NET
(CTCH)
(j
0
0.
a·
G
·o
·o
·o.
:o
.0.
6
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
Goose Creek 2, R.M. 73.1, S/23N/04W/30/BBB
L JUL X X 0 0
E AUG X X 0 0
L AUG X X 0 0
L SEP X X X 0
E OCT 0 0 0 0
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
FEB X X X 0
L JUN X X 0 0
E JUL X X X 0
L JUL X X X 0
E AUG X X X 0
L AUG X X 0 0
L SEP X X X 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
X
0
0
0
0
0
0
X
GILL DRFT .
(CTCH/DRF)
0
0
0
0
0
•o
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period ·
o indicate that this gear type was not utilized during the sampling period
DIP· NET
(C~H)
0
~
0
p
0
0
0
0
0
·o
o·
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Montana
NOV
FEB
MAR
MAY
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
E OCT
~ainstem
NOV
JAN
FEB
MAR
APR
E JUN
L JUN
E JUL
L JUL
E AUG
. L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
Creek, R.M. 77.0, S/~3N/04W/07/ABA
X 0 0
X X X
X X 0
X X 0
X X 0
X X 0
X X 0
X X 0
X X 0
X X 0
X X 0
0 0 0
1, R.M. 84.0, S/24N/05W/10/DCC
X 0 0
0 X 0
X X 0
X X 0
X X X
X X X
X X X
X X X
X X 0
X X 0
X X 0
X X 0
X X X
HOOK&LINE
(CTCH/HR)
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
X
GILL DRFT·
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gea~ type was utilized during the sampling period
o indicate th~t this ear t e was not utilized durin the sam lin eriod
DIP .. NET
(CTCH)
'0
. ·o.
0
X
0.
'0
0
Q
.o
0
0
0
0
0
·o
·a
0
0
0
0
0
·o
.o
.o
0
Appendix Table E~ Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Sunshine
NOV
DEC
JAN
FEB
MAR
APR
MAY
EJUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
Creek, R.M. 85.7, S/24N/05W/14/AAB
X 0 0
X 0 0
X X 0
X 0 0
X 0 X
X 0 0
X 0 X
X X X
X X 0
X X 0
X X 0
X X 0
X X 0
X X 0
X X X
HOOK&LINE
(CTCH/HR)
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values -x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP .. NET
(GTCll)
0
0
0
0
0
0
0
0
0
9
p.
0
0
0
·o
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Birch
JAN
E JUN
L JUN
E JUL
L JUL
.E AUG
L AUG
E SEP
L SEP
E OCT
Birch
JAN
FEB
MAR
EJUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
MINNOW TRP TROT LINE
( CTCH/TRP ) ( CTCH/LNE)
Creek Slough, R.M. 88.4,
X 0
X X
X X
X X
X X
X X
X X
X X
X X
0 0
GILL NET
(CTCH/24H)
HOOK&LlNE
(CTCH/HR)
S/25N/05W/25/DCC
0 0
X 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
Creek, R.M. 89.2, S/25N/05W/25/ABD
X X X 0
X X X 0
X 0 X 0
X X 0 0
X X X 0
X X X 0
X X X 0
X X 0 0
X X 0 0
X X 0 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
X
X
0
0
0
0
0
0
0
0
0
X
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utiliz~d during the sampling period
DI~· NET
(C'ICH) . . '
., 0
0
0
0
0
0
9
0
0
.. 0.
C?
0
0
Q
0,.
0
0
o.
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Cache
DEC
JAN
APR
MAY
E JUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
E OCT
Cache
MAY
E JUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP
(CTCH/TRP)
Creek Slough,
X
X
X
X
X
X
X
X
X
X
X
X
0
TROT LINE
(CTCH/LNE)
R.M.· 95.5,
X
X
X
X
X
X
X
X
X
X
X
X
0
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
S/26N/05W/35/ADC
0 0
0 0
X 0
X X
X 0
X 0
0 0
0 0
o· 0
0 0
0 0
0 0
0 0
Creek 8 R.M. 96.0, S/26N/05W/26/DCB
X 0 X 0
X X X 0
X X X 0
X X 0 0
X X 0 0
X X 0 0
X X 0 0
X X 0 0
X X 0 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
X
0
0
0
D
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values -x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period •
DIP.NET
(CTCH)
0
0
9
0
0
0
0·
0
.Q
0
0
0
0
0
0
0
0.
0
0
0
·o
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Whiskers
JAN
MAR
E JUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
Whiskers
FEB
MAR
E JUN
L JUN
E JUL
L JUL
E·AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
Creek Slough, R.M. 101.2, S/26N/05W/03/ADB
X X 0 0
0 X X 0
X X X 0
X X X 0
X X X 0
X X 0 0
X X 0 0
X X 0 0
X X 0 X
X X X 0
Creek, R.M. 101.4, S/26N/05W/03/AAC
X X X 0
X 0 0 0
X X X X
X X X X
X X 0 X
X X 0 0
X X 0 0
X X 0 0
X X 0 0
X X 0 X
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF) .
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear typ~ was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP NET
(cT·cu)·
.o
·o
.o:
. 0.
. 0 ..
·9
0
.·:o
.·.o
·o
:o
,0'
o.
·o
·o
.P
0
0
·o
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Slough
MAR
E JUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
6A, R.M. 112.3' S/28N/05W/13/CAC
X X 0
X X X
X X X
X X X
X X X
X X 0
X X X
X X 0
X X X
Lane Creek, R.M. 113.6 t S/28N/05W/12/ADD
MAR X X 0
E JUN X X X
L JUN X X X
E JUL X X X
L JUL X X 0
E AUG X X 0
L AUG X X 0
E SEP X X 0
L SEP X X 0
HOOK&LINE
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
X
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
X
0
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
o indicate that this gear type was not u~ilized during the sampling period
DIP NET
(CTGH)
0
0
.()
0
0.
()
.0
6
0
0
0
0
0
0
0.
0
o·
q ..
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Mainstem
EJUN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
Mainstem
MAR
APR
L JUN
E JUL
L JUL
E AUG
L AUG
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
2, R.M. 114. 4, S/28N/04W/06/CAB
X X X 0
X X X 0
X X X 0
X X 0 0
X X 0 0
X X 0 0
X X 0 0
X X X 0
Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
0 X 0 0
X X 0 0
X X X 0
X X X 0
X X X 0
X X X 0
X X 0 0
X X X 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
X
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
X
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP.·NET
(CTCB)
0
f)
0
·o
0
0
0
0
C) ..
0
·o
a·
0
0
0
.Q·
I Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
SAMPLE
Susitna
MAR
APR
L JUN
E JUL
L JUL
E AUG
L AUG
L SEP
Mainstem
L JUN
E JUL
L JUL
E AUG
L AUG
L SEP
on the lower Susitna River, 1980-1981.
MINNOW TRP TROT LINE
{CTCH/TRP) {CTCH/LNE)
Side Channel, R.M. 121.6,
X 0
X 0
X X
X X
X X
X X
X X
X X
GILL NET
(CTCH/24H)
HOOK&LINE
(CTCH/HR)
S/29N/04W/ll/BBB
0 0
0 0
X 0
X 0
X 0
X 0
0 0
X 0
BEACH SN
(CTCH/TME)
0
0
0
0
0
0
0
0
Susitna -Gravel Bar, R.M. 123 .8, S/30N/04W/26/DDD
X X X 0 0
X X X 0 0
X X X 0 0
X X X 0 0
X X 0 0 0
X X X 0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
o indicate that this gear type was not utilized during the sampling period
DIP. NET
(CTCJ;i)
D.
·.o·
.. ·o
"9
0
·o
0
·0
.0
0.
·.o
.o
·0.
.'o
Appendix Table EA
SAMPLE
MINNOW TRP
(CTCH/TRP)
Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
TROT LINE
(CTCH/LNE)
GILL NET
(C':fCH/24ll)
HOOK&LINE
(CTCH/HR)
BEACH SN
(CTCH/TME)
ELECTRO
(CTCH/HR)
GILL DRFT
(CTCH/DRF)
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
JAN X 0 0 0 0 0 0
FEB X X 0 0 0 0 0
MAR X 0 0 0 0 0 0
APR X 0 0 0 0 0 0
L JUN X X X 0 0 0 0
E JUL X X X X 0 0 0
L JUL X X X 0 0 0 0
E AUG X X 0 0 0 0 0
L AUG X X 0 X 0 0 0
L SEP X X X X 0 0 0.
Fourth of July Creek, R.M. 131.1, S/30N/03W/03/DAC
L JUN X X X 0 X 0 0
E JUL X X X X X 0 0
L JUL X X X X 0 0 0
E AUG X X 0 X 0 0 0
L AUG X X 0 X 0 0 0
E SEP X X 0 X 0 0 0
L SEP X X 0 0 0 0 0
•
Values -X indicate that this gear type was utilized during the sampling period
0 indicate that this gear type was not utilized during the sampling period
DIP NET· <c±cll)
c?,
·o.
·Q '·o
·0
. 'd
·a
0
. o·
0
·0
0:
0
0
0
0
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Slough
JAN
FEB
MAR
APR
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
Slough
JAN
FEB
MAR
APR
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24H)
10, R.M. 133.8, S/31N/03W/36/AAC
X X 0
X X 0
X 0 0
X 0 0
X X X
X X X
X X X
X X X
X X 0
X X 0
X X X
llD R.M. 135.3, S/31N/02W/19/DDD
X 0 0
X 0 0
X 0 0
X 0 0
X X 0
X X 0
X X X
X X 0
X X 0
X X 0
X X 0
HOOK&LINE
(CTCH/HR)
0
0
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BEACH SN
(CTCH/TME)
0
0
0
0
X
0
0
0
0
0
0
0
0
0
X
X
0
0
0
0
0
0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Values - x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF:)
0
0
0
0
0
0
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
o indicate that this gear type was not utilized during the sampling period
~ •
DIP :NE;T
(CTCH).
o.
0
.0
0
0
0
0
0,
9
b·
0
·o
0
!). ..
X
0
0
0
·o:
o.
p
0
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
SAMPLE
Mainstem
JAN
L JUN
E JUL
L JUL
E AUG
L AUG
E SEP
L SEP
MlNNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
Susitna -Inside Bend,
0 X
X X
X X
X X
X X
X X
X X
X X
GILL NET
(CTCH/24H)
R.M. 136.9,
0
X
X
X
0
0
X
0
Indian River, R.M. 138.6, S/llN/02W/09/CDA
JAN X X 0
FEB X X 0
MAR X X 0
APR X X 0
E JUN X X X
E JUL X X X
L JUL X X X
E AUG X X 0
L AUG X X 0
E SEP X X X
L SEP X X X
Values - x indicate that this gear type was
o indicate that this gear type was
HOOK&LINE
(CTCH/HR)
BEACH SN
(CTCH/TME)
S/llN/02W/17/CDA
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
X 0
X 0
0 0
X 0
X 0
0 0
ELECTRO
(CTCH/HR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
utilized during the sampling period
GILL DRFT
(CTCH/DRF)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
0
not utilized during the sampling period
. . . .
DIP ·NE;"T
(C']:~H)
'()
(i)'·
0
0.
0
Q
·o
0
.0
0
0
·o
0.
0
o·
Q
0
0
0.'
·.·
Appendix Table EA Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981. •
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET
(CTCH/24U)
HOOK&LINE
(CTCU/HR)
Slough 20, R.M. 140.1 t S/31N/02W/ll/BBC
FEB X 0 0 0
MAR X 0 0 0
APR X 0 0 0
EJUN X X X 0
E JUL X X 0 0
L JUL X X X 0
E AUG X X 0 0
L AUG lt X 0 0
E SEP X X 0 0
L SEP X X 0 0
Mainstem Susitna -Is land, R.M. 146. 9 8 S/32N/01W/27/DBC
E JUN X X X 0
E JUL X X X 0
L JUL X X X 0
E AUG X X 0 ·o
L AUG X X 0 0
E SEP X X X 0
L SEP X X X 0
BEACH SN
(CTCH/TME)
0
0
0
0
X
0
0
0
0
0
0
0
0
0
0
0
0
ELECTRO
(CTCU/UR)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
Values -x indicate that this gear type was utilized during the sampling period
GILL DRFT
(CTCH/DRF).
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
X
0
o indicate that this gear type was not utilized during the sampling period
.· ..
DIP ~ET
~_9TCH)
. ..
0.
0.
.o
0
0
0
.0
o·
9
0'.
9·
0
0
0.
0
Q
0
Appendix Table EA
MINNOW TRP
SAMPLE (CTCH/TRP)
Portage Creek, R.H.
FEB X
MAR X
EJUN X
E JUL X
L JUL X
E AUG X
L AUG X
E SEP X
L SEP X
Values - X
indicate
o indicate
Sampling effort by habitat location, sampling period, and gear type
on the lower Susitna River, 1980-1981.
TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT
(CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF)
148.8, S/32N/01W/25/CDB
X 0 0 0 0 0
X 0 0 0 0 0
X X 0 0 0 0
X X X X 0 0
X X X 0 0 0
X 0 0 0 0 0
X 0 X 0 0 0
X X X 0 0 X
X X 0 0 X 0
that this gear type was utilized during the sampling period
that this gear type was not utilized during the sampling period
DIP:.NET
<c'fciO.
• 0
Q
:··~
O·
·.o
o·
'O.
(j
.o
0
-
Appendix Table EB.01 Catch per unit effort lower Sueitna River habitat locations. 1980-1981~ for
rainbow trout.
MINNOW' TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Alexander Creek Site A, R.M. 10 01' T.R.M. 0.0, S/15N/07W/06/DCA
L AUG .30 o.oo 0.00 -.00 -.00 -.00 -.00 -.oo
E SEP .so o.oo -.00 -.oo -.oo -.00 -.oo -.oo
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0, S/16N/07W/32/CCB
MAR o.oo .40 0.00 o.oo -.00 -.00 -.00 -.00
E JUL 0.00 o.oo -.00 .20 -.00 -.00 -.00 -.00
L JUL 0.00 .30 -.00 o.oo -.oo -.oo -.00 -.00
E SEP 0.00 .30 -.00 -.00 -.00 -.00 -.00 -.00
Alexander Creek Site c, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
L JUN o.oo .50 -.00 -.00 -.00 -.00 -.00 -.00
1 AUG 0.00 1.00 -.00 -.00 o.oo -.00 -.oo o.oo
E SEP o.oo .so 0.00 -.oo o.oo -.00 -.00 -.00
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/,R) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUN o.oo 0.00 3.00 -.00 -,00 -.00 -.oo -.oo
E JUL 0.00 .so 1.00 -,00 -.oo -.00 -.oo -.00
L AUG .10' .50 2.00 -.00 -.oo -.oo -.oo -.oo
E SEP o.oo 2.00 o.oo -.oo -.oo -.00 -.oo -,00
L SEP o.oo 1.00 9.00 -.00 -.00 -.oo -.00 -.oo
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
E SEP 0.00 .30 o.oo -.oo -.00 -.oo o.oo -.oo
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E SEP o.oo o.oo o.oo -.00 .10 -.oo o.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCB/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/BR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCB)
Deshka River Site A, R.M. 40.6, T.R.M. 0.0, S/19N/06W/35/BDA
E SEP 0.00 .30 0.00 -.00 -.00 -.00 -.00 -.oo
L SEP 0.00 .30 2.00 -.oo -.oo -.oo -.oo -.oo
I S/19N/O~W/26/BCB Deshka River Site B, R.M. 40.6, T.R.M • 1.0,
MAY 0.00 o.oo • 01 -.00 -.00 -.00 -.00 -.oo
L JUL 0.00 .50 -.00 -.00 -.00 -.00 -.00 -.oo
E AUG o.oo .30 -.00 -.00 -.oo -.oo o.oo -.00
L AUG 0.00 • 80 -.00 -.oo -.oo -.oo -.00 -.00
E SEP o.oo .30 -.oo 2.00 -.00 -.oo -.00 -.00
L SEP o.oo .30 2.00 -.00 -.oo -.00 -.oo -.oo
Desbka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
MAY 0.00 0.00 .70 -.00 -.oo -.00 -.00 -.oo
L AUG .10 .50 -.00 -.00 -.oo -.00 o.oo -.oo
E SEP o.oo .so -.00 -.00 -.00 -.oo -.00 -.00
L SEP 0.00 • 80 1.00 -.00 -.00 -.oo -.oo -.00
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCH/24H) (CTCH/,R) (CTCH/TME) (CTCB/HR) (CTCH/DRF) (CTCH)
Little Willow Creek, R.M. 50.5, S/20N/05W/27/AAD
E JUL o.oo o.oo 0.00 2.30 -.oo -.oo o.oo -.oo
E AUG o.oo .30 -.00 -.00 -.00 -.00 0.00 -.00
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
MAY 0.00 o.oo o.oo -.00 -.oo -.00 .40 -.00
L JUN o.oo .50 -.00 -.oo -.oo -.oo -.00 -.00
L JUL .05 .30 0.00 -.oo o.oo -.00 0.00 -.00
L SEP o.oo .so 0.00 -.oo -.00 1.60 -.oo -.00
Caswell Creek, R.M. 63.0, S/21N/04W/06/BDD
MAY 0.()0 -.00 2.00 0.00 -.00 o.oo -.00 -.oo
L JUL o.oo o.oo 1.00 -.oo -.00 -.00 -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.01 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCR/HR) (CTCH/TME) (CTCH/RR) (CTCH/DRF) (CTCH)
Sheep Creek Slough. R.M. 66.1. S/22N/04W/30/BAB
L SEP 0.00 o.oo 2.00 -.oo -.00 0.00 -.00 -.oo
Goose Creek 1, R.M~ 72.0 1 S/23N/04W/31/BBC
L JUN o.oo .50 -.;00 -.oo -.oo o.oo -.oo -.00
E JUL o.oo o.oo .75 -.oo o.oo -.oo o.oo -.00
Goose Creek 2, R.M. 73.1, S/23N/04W/30/BBB
L JUL o.oo .30 0.00 -.00 -.00 0.00 0.00 -.00
L SEP o.oo .so o.oo -.00 -.oo -.oo -.00 -.00
E OCT -.00 -.00 -.oo -.00 -.00 2.70 -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Sueitna River habitat locations, 1980-1981, for
rainbow trout.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP~ (CTCH/LNE)
Mainstem West Bank, R.M. 74.4,
FEB 0.00 .10
GILL NET HOOK&LINE
(CTCH/24H) (CTCH/HR)
I
S/23N/05W/13/CCD
0.00 -.00
Montana Creek, R.M. 77 .o, S/23N/04W/07/ABA
L JUN .10 0.00 o.oo o.oo
E JUL .10 o.oo -.00 -.oo
L JUL o.oo .30 -.oo -.oo
E OCT o.oo 0.00 -.oo -.oo
Main stem 1, R.M. 84.0, S/24N/05W/10/DCC
FEB 0.00 .01 -.00 -.00
E JUN o.oo o.oo .so -.oo
Values• -.00 indicate no sample taken
BEACH SN
(CTCH/TME)
-.00
-.oo
-.oo
-.00
-.oo
-.00
-.oo
ELECTRO
(CTCH/HR)
-.oo
o.oo
-.00
-.00
6.00
-.00
-.oo
GILL DRFT
(CTCH/DRF)
-.00
-.00
-.oo
-.00
-.00
-.oo
-.oo
DIP NET
(CTCH)
-.00
0.00
-.00
-.00
-.oo
-.00
-.00
Appendix Table EB.Ol Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
JAN 0.00 .20 -.00 -.oo -.oo -.oo -.oo -.00
MAR 0.00 -.00 .30 -.oo -.oo -.oo -.oo -.oo
E JUN o.oo o.oo 1.00 0.00 . -.oo -.oo -.oo -.oo
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
E JUL 0.00 .50 o.oo -.oo -.oo -.oo -.oo -.oo
L SEP o.oo o.oo -.00 -.00 -.oo 7.10 -.oo -.oo
Birch Creek, R.M. 89.2, S/25N/05W/25/ABD
E JUL 0.00 .50 o.oo -.00 -.oo o.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP~ (CTCH/LNE)
Cache Creek Slough, R.M. 95.5,
MAY 0.00 -o.oo
GILL NET HOOK&LINE
(CTCH/24H) (CTCH/,R)
S/26N/05W/35/ADC
.70 o.oo
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
E JUL 0.00 .50 0.00 -.oo
Whiskers Creek Slough, R.M • 101.2, S/26N/05W/03/ADB
JAN 0.00 • 30 -.oo -.oo
MAR -.00 o.oo .30 -.oo
E JUN 0.00 1.00 3.00 -.oo
L JUN o.oo 1.00 6.00 -.oo
E JUL 0.00 .30 1.00 -.oo
L JUL o.oo .so -.00 -.00
L AUG 0.00 .so -.00 -.oo
E SEP 0.00 1.80 -.00 .30
L SEP .20 2.50 .70 -.oo
Values• -.00 indicate no sample taken
BEACH SN ELECTRO
(CTCH/TME) (CTCH/HR)
-.oo -.00
-.00 o.oo
-.oo -.oo
-.00 -.00
-.00 -.00 -.oo · -.oo
-.oo -.00
-.oo -.oo -.oo -.00
-.oo -.oo
-.00 -.oo
GILL DRFT
(CTCH/DRF)
-.00
-.oo
-.oo
-.00 -.oo
0.00
-.00
-.oo
-.00
-.oo -.oo
DIP NET
(CTCH)
-.oo
-.00
-.00
-.00 -.oo
-.00
-.oo
-.oo -.oo
-.oo
-.00
Appendix Table EB.Ol Catch per unit effort lower Susitna liver habitat locations, 1980-1981, for
~ainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCR/HR) (CTCH/TME) (CTCH/RR) (CTCH/DRF) (CTCH)
Whiskers Creek. R.M. 101.4, S/26N/05W/03/AAC
E JUN o.oo .30 1.50 4.00 -.oo -.oo -.oo -.oo
L JUN o.oo o.oo 1.00 7.00 -.oo -.oo -.oo -.oo
L JUL o.oo .so -.oo o.oo -.oo -.00 -.00 -.00
L AUG o.oo 2.00 -.oo -.~0 -.oo -.oo -.oo -.oo
E SEP o.oo .30 -.oo -. 0 -.oo -.oo -.00 -.oo
Slough 6A, l.M. 112.3, S/28N/05W/13/CAC
L JUN o.oo .30 o.oo 0.00 -.oo -.oo -.oo -.oo
E JUL o.oo o.oo 3.00 -.00 -.00 -.oo -.00 -.oo
L JUL 0.00 .30 1.00 -.oo -.oo -.oo -.00 -.oo
L AUG 0.00 .30 1.00 -.oo o.oo -.oo -.oo -.oo
L SEP .10 1.50 o.oo -.oo -.oo o.oo -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP~ (CTCH/LNE) (CTCH/24H) (CtCH/,R) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Lane Creek, R.M. 113.6, S/28N/05W/12/ADD
L JUN 0.00 .50 0.00 -.00 -.oo -.oo -.oo -.00
E JUL o.oo .30 o.oo -.00 -.oo -.00 -.00 -.oo
L AUG o.oo .30 -.00 -.00 o.oo -.oo -.oo -.oo
E SEP .10 .30 -.oo -.oo -.oo 12.50 -.oo -.oo
Mainstem 2, R.M. 114.4, S/28N/04W/06/CAB
L JUN o.oo 0.00 1.00 -.oo -.oo -.oo -.oo -.oo
E SEP 0.00 o.oo o.oo -.oo o.oo 12.50 -.oo -.oo
Mainstem Susitna -Curry·, R..M. 120.7, S/29N/04W/10/BCD
APR. o.oo .10 o.oo -.oo -.oo -.oo -.oo -.oo
L JUN o.oo o.oo .50 -.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.01 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Susitna Side Channel, R.M. 121.6 • S/29N/04W/ll/BBB
L SEP o.oo .so o.oo -.oo -.oo -.00 -.00 -.oo
Mainstem Susitna -Gravel Bar, R.M. 123 .a .• S/30N/04W/16/DDD .
L JUN 0~00 0.00 1.50 -.00 -.00 -.00 -.00 -.oo
E JUL 0.00 .so 1.00 -.00 -.oo -.oo -.00 -.oo
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
L JUN 0.00 .30 1.00 -.oo -.00 -.oo -.00 -.00
E JUL 0.00 .30 2.00 o.oo -.00 -.oo -.00 -_.oo
E AUG 0.00 .30 o.oo -.oo -.00 -.oo -.00 -.00
L AUG 0.00 .30 -.00 o.oo -.oo -.00 -.00 -.oo
L SEP 0.00 .80 0.00 0.00 -.00 -.00 -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/JR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Fourth of July Creek, R.M. 131.1, S/30N/03W/03/DAC
L JlJN o.oo .50 .50 -.oo o.oo -.oo -.oo -.oo
E JUL .20 .50 3.00 1. 70 0.00 -.oo -.oo -.00
L JUL o.oo .50 o.oo o.oo -.oo -.oo -.00 -.oo
L AUG o.oo 1.50 -.oo 1.30 -.oo -.oo -.00 -.00
E SEP .10 .30 -.oo .30 -.oo -.oo -.oo -.oo
L SEP 0.00 .30 -.oo -.oo -.oo -.oo -.00 -.oo
Slough 10, R.M. 133.8, S/31N/03W/36/AAC
MAR .10 0.00 -.00 -.00 -.oo -.oo -.oo -.oo
APR .10 -.00 -.oo -.00 -.00 -.oo -.oo -.00
L JUL 0.00 .50 3.00 o.oo 0.00 -.oo -.oo -.oo
E AUG o.oo 0.00 .30 -.oo -.oo -.oo -.oo -.oo
E SEP o.oo .eo -.oo -.oo -.oo -.oo o.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24R) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Slough u. R.M. 135.3, S/31N/02W/19/DDD
L JUN o.oo .50 -.oo -.00 o.oo -.00 -.oo 0.00
E JUL o.oo .30 -.00 -.00 -.oo -.oo -.oo -.00
L JUL o.oo o.oo 1.00 -.00 -.oo -.00 -.oo -.oo
E SEP o.oo .30 -.00 -.oo -.00 -.00 -.oo -aOO
Mainstem Susitna -Inside Bend, R.M • 136.9, S/31N/02W/17/CDA
E JUL 0.00 • 50 0.00 -.oo -.oo -.00 -.00 -.00
Indian River, R.M. 138.6, S/31N/02W/09/CDA
E JUN 0.00 0.00 1.00 -.oo -.oo -.00 -.oo -.oo
E JUL o.oo .30 o.oo o.oo -.oo -.00 -.oo -.oo
L JUL 0.00 o.oo 2.00 o.oo -.00 -.00 -.oo -.00
E AUG o.oo .30 -.oo -.00 -.oo -.00 -.oo -.00
E SEP o.oo o.oo o.oo .30 -.oo -.00 .50 -.00
L SEP o.oo .30 o.oo· -.oo -.00 3.30 -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.Ol Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
rainbow trout.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCH/24H) (CTCB/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
'
Slough 20, R.M. 140.1, S/31N/02W/ll/BBC
E SEP o.oo .so o.oo -.oo o.oo -.oo -.oo -.oo
Portage Creek, R.M. 148.8, S/32N/01W/25/CDB
E JUL o.oo o.oo .so o.oo o.oo o.oo o.oo -.oo
L AUG 0.00 .30 o.oo o.oo -.00 -.oo -.oo -.oo
E SEP 0.00 0.00 o.oo 2.00 -.00 -.oo o.oo -.oo
L SEP ·0.00 .30 0.00 -.oo -.oo o.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP·N~T
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (Crcu)
Alexander Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
E JUL 0.00 o.oo 0.00 0.00 1.00 -.00 -.00 ..:..oo
L AUG 0.00 o.oo -.00 -.00 -.oo -.00 -.00 i.oo
E SEP 0.00 o.oo o.oo -.00 .30 -.00 -.00 -.00
.•
Mid-Kroto Slough, R.M. 36.3, S/1SN/06W/16/BBC
E SEP o.oo 0.00 0.00 -.00 .10 -.00 0.00 ..:.oo
L SEP 0.00 o.oo 2.00 -.00 -.00 -.00 -.oo .:..oo
Deshka River Site A, R.M. 40.6, T .R.M. 0.0, S/19N/06W/35/BDA
MAY 0.00 o.oo 1.60 -.00 -.oo -.00 -.00 -.oo
L SEP 0.00 o.oo 5.00 -.00 -.00 -.00 -.00 -.00
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT Dif NEt
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Deshka River Site B, R.M. 40.6, T.R.M. 1.0, S/19N/06W/26/BCB
MAY 0.00 0.00 1.80 -.00 -.00 -.00 -.00 "';'.00
E SEP 0.00 0.00 -.00 3.00 -.00 -.00 . 0.00 -.00
L SEP 0.00 .30 2.00 -.00 -.00 -.00 -.00 .-.00
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
L AUG .10 0.00 0.00 ...,..oo -.00 -.00 0.00 -~00
E SEP .30 0.00 -.00 -.00 -.00 -.00 -.00 -.oo·
L SEP 0.00 0.00 1.00 -.00 -.00 -.00 -.00 -.. oo
Rustic Wilderness, R.M. 58.1, S/21N/05W/25/CBD
MAY 0.00 0.00 .50 0.00 -.00 -.oo 0.00 .-.00
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for.
Arctic grayling.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Kashwitna River, R.M. 61.0. S/21N/05W/13/AAA
MAY 0.00 0.00 -.oo -.00
L JUL 0.00 o.oo 0.00 -.00
L SEP o.oo 0.00 1.00 -.00
Goose Creek 1, R.M. 72.0 1 S/23N/04W/31/BBC
E JUL .10 0.00 o.oo o.oo
L AUG .10 0.00 -.00 -.00
L SEP 0.00 0.00 1.00 -.00
Goose Creek 2 1 R.M. 73.1, S/23N/04W/30/BBB
L SEP o.oo o.oo 2.00 -.00
E OCT -.00 -.00 -.oo -.00
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT DIP·NET
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (CtCH)
-.00 -.00 .60 ·.-.00
3.00 -.00 o.oo ·.-.00
-.00 6.20 -.00 <oo
0.00 0.00 0.00 -.oo
-.oo -.00 -.00· ·.;,;.00
-.00 o.oo 0.00 . ...; .• 00
-.00 -.oo -.00 .'"7.00
-.00 4.00 -.oo ·:-. 00
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, t~r.
Arctic grayling •
. MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP.N.E'r
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
L SEP 0.00 0.00 3.00 -.00 -.00 0.00 -.00 ':"" 00·
Montana Creek, R.M. 77.0, S/23N/04W/07/ABA
L JUN .10 o.oo 0.00 o.oo -.oo -.00 -.oo 0.()0
E OCT o.oo o.oo -.00 -.oo -.00 18.00 -.00 ·.-.:oo.
Mainstem 1, R.M. 84.0, S/24N/05W/10/DCC
EJUN o.oo 0.00 1.00 -.00 -.oo -.00 -.06 .... oo
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
L SEP o.oo o.oo o.oo 0.00 -.oo 7.10 -.00 .-.00
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
SAMPLE
Birch
L JUN
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Creek, R.M. 89.2, -S/25N/05W/25/ABD
.10 0.00 0.00 -.00
Cache Creek Slough, R.M. 95.5, S/26N/05W/35/ADC
APR .10 0.00 1.00 -.00
MAY 0.00 0.00 20.00 0.00
E SEP .10 0.00 0.00 -.00
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
MAY 0.00 0.00 2.50 -.00
L SEP '2.00 0.00 o.oo -.oo
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT
(CTCH/TME) (CTCH/HR) (CTCH/DRF)
-.oo -.00 -.00·
-.00 0.00 -.oo
-.oo -.00 -.00
-.00 -.00 -.oo
-.00 0.00 -.00
-.00 -.00 -.00
DIP,.NET
(C~CH)
-... oo
-.00
~.oo ;,;:.oo
·::_,QO
-.·oo
---.--..---;-
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT. DIP·. 'NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH).
Whiskers Creek Slough, R.M. 101.2, S/26N/05W/03/ADB
E JUN 0.00 o.oo 1.50 -.00 -.00 -.00 -.oo . -~.00
L JUL .10 o.oo o.oo -.00 -.00 -.oo 0.00 .:~ 0.0'
E AUG .10 o.oo -,;00 -.00 -.00 -.00 -.00 -. o·o . .. . .
L SEP o.oo 0.00 .30 0.00 -.oo -.00 -.oo ·-•. 00
Whiskers Creek, R.M. 101.4, S/26N/05W/03/AAC
MAR .01 0.00 0.00 ... oo -.00 -.00 -.oo . ~.oo
Lane Creek, R.M. 113.6, S/28N/05W/12/ADD
L JUL .30 0.00 o.oo o.oo 0.00 0.00 -.00 ·:.00
E SEP 0.00 0.00' -.00 -.00 o.oo 12.50 -.00 :-::.00
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations 9 1980-19~1, fpr
Arctic grayling.
MINNOW TR.P TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP'NE1
SAMPLE {CTCH/TRP) {CTCH/LNE) {CTCH/24H) (CTCH/HR) (CTCH/TME) {CTCH/HR) {CTCH/DRF) {CTCH)
· Mainstem 2 1 R.M. 114.4, S/28N/04W/06/CAB
L JUN 0.00 0.00 .50 -.00 -.00 -.00 -.00 -.oo ·
E AUG .10 o.oo 0.00 -.00 -.00 -.00 -.oo .~.o.o ·
L AUG 0.00 0.00 -.00 -.00 1.00 -.oo -.oo :-.• 00
Mainste~ Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L JUN 0.00 0.00 1.00 -.00 -.00 0.00 -.00 -.."00
E JUL o.oo o.oo :...oo ·' .
1.00 -.oo -.00 -.00 -·,oo
E AUG 0.00 0.00 2.00 -.00 -.00 -.00 -.00 . \-:-=~oo
L SEP 0.00 o.oo 1.00 -.00 -.oo 0.00 -.oo ~.00
Susitna Side Channel, a:M. 121.6 t S/29N/04W/ll/BBB
L SEP 0.00 0.00 1.00 -.00 -.00 -.00 -.00 . :: .uq
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
.. .
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO . GILL DRFT DIP _,NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem Susitna -Gravel Bar, R.M. 123.8, S/30N/04W/26/DDD
L SEP 0.00 0.00 9.00 -.00 -.00 -.oo -.oo ·,~.oo
Fourth of July·Creek, R.M. 131.1, S/30N/03W/03/DAC
E AUG 0.00 .50 o.oo 2.00 o.oo -.00 -.00 ·-:-·.oo
L AUG 0.00 o.oo -.00 .30 -.00 -.00 -.00 ·"":.00·
Slough 10, R.M.· 133.8, S/31N/03W/36/AAC
E JUL o.oo .50 0.00 o.oo o.oo -.00 -.00 ..:..·.oo
L AUG .10 o.oo o.oo -.00 -.00 -.00 -.00 .7.o.o
L SEP o.oo 0.00 1.00 -.00 -.00 -.00 0.00 -.·oo
Values= -.00 indicate no sample taken
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Arctic grayling.
SAMPLE
MINNOW.TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
BEACH SN ELECTRO
(CTCH/TME) (CTCH/HR)
Mainstem Susitna -Inside Bend, R.M. 136. 9, S/31N/02W/17/CDA
L JUN .10 0.00 0.00 -.00 0.00 -.00
L AUG 0.00 .30 0.00 -.00 -.00 -.00
E SEP 0.00 o.oo 1.00 -.oo -.00 -.oo
Indian River, R.M. 138.6, S/31N/02W/09/CDA
E AUG 0.00 .30 0.00 0.00' -.oo -.00
E SEP 0.00 o.oo o.oo .30 -.00 -.00
L SEP 0.00 0.00 0.00 -.00 -.00 .9. 90
Slough 20, R.M. 140 .1 J S/31N/02W/11/BBC
L SEP o.oo .80 0.00 -.00 o.oo -.00
Values= -.00 indicate no sample taken
GILL DRFT
(CTCH/DRF)
-.00
-.oo
-.oo
-.oo.
1.20
-.00
... 00
DIP: NET
(c'rc.u):
.o,oo
·-:.00
.'·_j 00
~~00.
.-· 00
.:.~oo
.~:.oo
Appendix Table EB.02 Catch per unit effort lower Susitna River habitat locations, 1980-19~1 J fQr.
Arctic grayling.
..
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP".NET-·
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) ( CTCH/DRF) . (CT(fll) . ....
Mainstem Susitna -Island, R.M. 146.9, S/32N/01W/27/DBC
E JUL o.oo o.oo 2.00 ,-.00 -.oo -.00 . -.oo ·~:-."00.
E SEP o.oo o.oo 1.00 -.00 -.oo -.00 .30. .. :...·~p.o·
Portage Creek, R.M • 148.8, S/32N/01W/25/CDB
E JUN • 10 o.oo .10' -.00 -.00 0.00 -.00 ..:.oo
E JUL 0.00 o.oo o.oo .50 0.00 -.00 -.00 -~oo
L JUL o.oo .50 0.00 0.00 -.oo -.00 -.oo :-~00
E AUG o.oo .30 -.oo -.00 -.00 -.00 -.00 ..: .. oo
L AUG 0.00 .80 -.00 0.00 -.00 -.00 -.00 -.00 ....
E SEP o.oo .30 o.oo 17 .oo -.00 -.00 2.50 ..; •. oo
L SEP 0.00 .30 0.00 -.00 -.00 6.60 -.00 .:..oo
Values= -.00 indicate no sample taken
Appendix Table EB.OJ Catch per unit effort lower Susitna River habitat locations, 1980-1981, f.qr ·
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
BEACH SN ELECTRO GILL DRFT DIP .. NET
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (CtCil) · .·.
Alexander Creek Site A, R.M. 10.1, T.R.M. 0.0, S/15N/07W/06/DCA
MAR 0.00 1.00 0.00 -.00 -.00 -.00 -.oo-. 7-~ 00
L JUL .10 0.00 -.oo· -.oo -.oo -.00 -.00 ·:-~·oo
E AUG o.oo 1.50 -.00 -.00 -.00 -.00 -.00 ":~~.00
L AUG .10 .50 -.00 -.00 -.oo -.oo -.00 .-.00
E SEP .10 2.00 -.00 -.00 -.00 -.00 -.00 .;:-:.00
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0, S/16N/07W/32/CCB
E AUG 0.00 1.00 0.00 o.oo -.00 -.00 -.oo . :-.oo·
L AUG .30 .so -.00 -.00 -.00 -.00 -.00 .~.00 .
E SEP .20 2.50 -.00 -.00 -.00 -.00 -.oo .:~~00.
Alexander Creek Site c. R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
E JUL .10 0.00 -.00 -.00 o.oo -.00 -.oo ... •. oo
E AUG .10 1.00 -.00 -.00 -.00 -.00 -.00 . o.Q·o
L AUG .50 0.00 -.00 -.oo -.00 -.00 -.00 :o·.oo
E SEP .10 1.30 0.00 -.00 0.00 -.00 -.00 ...... • QO·
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per. unit effort lower Susitna River habitat locations, 1980-1981, for
burbot.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP.·NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH).
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUN 0.00 .80 o.oo -.00 -.oo .-.00 -.00 -.00
L JUN o.oo o.oo 2.00 -.oo -.00 -.00 -.00 .;;. .. oo.
L JUL o.oo .30 0.00 -.00 -.00 -.00 -.00 ,:...;'.00.
L AUG 0.00 .50 0.00 -.00 -.00 -.00 -.00 .. ·:..~·09
E SEP .20 2.00 0.00 -.00 -.00 -.00 -.00 ·~.oo
L SEP o.oo 0.00 1.00 -.00 -.00 -.00 -.00 .:.:.oo
Kroto Slough Mouth, R.M. 30.1, T.R.M. 2.0, S/17N/07W/01/DBC
E JUN 0.00 .30 1.00 -.oo -.00 -.00. -.oo ··.:..;oo
E AUG o.oo 1.00 0.00 -.00 -.oo -.00 -.00 -.• oo
E SEP o.oo 0.00 1.00 -.00 -.00 -.00 -.00 . ;...'~00·
L SEP o.oo 1.50 -.00 -.00 -.00 -.00 -.00 .~:oo
Values= -.~0 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-1981., for·
burbot.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP.NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem Slough 1 R.M. 31.0, S/17N/06W/05/CAB
E JUL 0.00 1.00 0.00 -.00 -.00 -.00 -:.00 . ... ·.oo
E SEP 0.00 1.30 -.00 -.00 -.00 -.00 o.oo ..:.;oo
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E SEP .10, o.oo o.oo -.00 o.oo -.00 0.00 ·':-:. 00
L SEP .10 4.00 0.00 -.00 -.00 -.00 -.oo •.00
Deshka River Site A, R.M. 40.6, T.R.M. 0.0, S/19N/06W/35/BDA
MAR 0.00 .60 0.00 -.00 -.00 -.oo -.00 ·· .::.~·oo
E AUG 0.00 .50 o.oo -.00 -.00 -.00 -.00 ....... QO
L AUG .10 3.80 -.00 -.00 -.00 -.00 -.00 ,·.:.::.00·
E SEP 0.00 .50 -.00· -.00 -.00 -.00 -.00 -·~oo·
L SEP .10 o.oo o.oo -.00 -.00 -.00 -.oo :..::.oo .·
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980:...19.81. fol:'
burbot.
~ . .
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT· DIP NET.
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) .· (CTCU)."
Deshka River Site B, R.M. 40.6, T.R.M • 1.0, S/19N/06W/26/BCB
MAR o.oo • 10 o.oo -.00 -.00 -.00 -.00 . -:-~00
MAY .10 -.00 .01 -.00 -.00 -.00 -.00 ':"rOO·
E JUL· o.oo .30 -.00 -.00 -.00 -.oo -.00 ::-:.oo
L JUL .10 o.oo -.00 -.00 -.00 -.00 -.00 <oo
E AUG .10 o.oo -.00 -.00 -.00 -.00 o.oo .'-i·~·.·oo·
L AUG o.oo 1.80 -.00 -.00 -.00 -.00 -.00 . :..'.0'9
E SEP .10 o.oo -.00 o.oo -.00 -.00 -.00 <oo
L SEP .20 2.00 o.oo -.00 . -.00 -.00 -.00 -0"0 ... ·.
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
..
E JUL .10 o.oo 0.00 -.00 -.00 -.00 -.00 ·_-:_.QQ
L JUL .10 0.00 -.00 -.00 -.00 -.00 -.00 . -~.oo·.
E AUG .20 0.00 -.00 -.oo -.00 -.00 o.oo _:...~oo
L AUG .20 .80 -.00 -.00 -.00 -.00 -.00 ..... ~oo ·
E SEP .20 1.30 -.00 -.00 -.00 -.00 -.00 .-.00
L SEP o.oo 1.50 o.oo -.00 -.00 -.00 -.00 ,: -· 00 : . . .
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-~981, .fQr.
burbot.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP· 'NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (~T.CH)
' .
Lower Delta Island, R.M. 44.0, S/19N/05W/19/ACB
E JUL .10 0.00 0.00 -.00 -.00 -.00 -.oo ·~.oo ·
E AUG 0~00 .50 -.00 -.00 -.00 -.oo o.oo -.oo·
Little Willow Creek,. R.M. 50.5, S/20N/05W/27/AAD
MAR 0.00 0.00 .40 -.00 -.00 -.oo -.00 ... ~oo
L AUG 0.00 .80 -.oo 0.00 -.oo -.00 o.oo ~·!00
Rustic Wilderness, R.M. 58.1, S/21N/05W/25/CBD
JAN ~10 0.00 -.00 -.00 -.oo -.00 -.00 ~-:. 00
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
L SEP 0.00 .30 o.oo -.00 o.oo o.oo o.oo . ""':'• 00
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fo1
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT.
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF)
Caswell Creek, R.M. 63.0, S/21N/04W/06/BDD
E JUL 0.00 .10 0.00 0.00 -.00 -.00 -.00
E AUG 0.00 .30 0.00 -.00 -.00 -.00 -.00
Slough West Bank, R.M. 65.6, S/22N/05W/27/ADC
L AUG 0.00 1.00 0.00 -.00 -.00 o.oo -.oo.
L SEP 0.00 .50 0.00 -.00 -.oo -.00 -.00
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
E JUL 0.00 .10 0.00 -.00 -.oo -.00 -.oo
E AUG 0.00 .• 30 -.00 -.00 -.00 -.oo -.oo
L SEP 0.00 .50 0.00 -.00 -.oo 0.00 -.00
Values= -.00 indicate no sample taken
DIP.NET
(CTCH)
-o·o. .. • .
..:.'~00
::--.00
· ,;.:·.-oo
.-~00 ... -.oo
..;,::00
Appendix Table EB.03 Catch per unit effort lower Sueitna River habitat locations, 1980-1981, fi)r·
burbot.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP.NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24B) (CTCH/HR) (CTCB/TME) (CTCB/BR) (CTCH/DRF.) (CTCB)
Goose Creek 2, R.M. 73.1, S/23N/04W/30/BBB
E AUG 0.00 1.30 o.oo -.00 0~00 o.oo o.oo ::".().0
L AUG 0.00 .30 -.00 -.00 -.00 -.00 -.0~ '"":.00
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
FEB 0.00 .40 0.00 -.00 -.00 0.00 -.oo ..;..00'
E JUL o.oo ~50 0.00 -.00 -.00 -.00 -.00 -:-:~00
L JUL .10 .50 o.oo -.00 -.00 -.oo -.00 ~ ... oo
Montana Creek, R.M. 77 .o, S/23N/04W/07/ABA
FEB o.oo .20 0.00 -.00 -.00 o.oo -.00 · ·:..;.oo.
"
Values= -.00 indicate no sample taken
Appendix Table EB.OJ Catch per unit effort lower Susitna River habitat locations • 1980-1~81, (or.
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Mainstem 1, R.M. 84.0, S/24N/05W/10/DCC
FEB 0.00 .30 -.00 -.00
MAR o.oo .50 -.oo -.00
E JUN o.oo 2.00 0.00 -.00
L JUN 0.00 .80 0.00 -.00
E JUL 0.00 leOO 0.00 -.oo
L JUL 0.00 .50 -.00 -.oo
E AUG 0.00 1.00 -.00 -.00
L AUG 0.00 2.00 -.00 -.oo
E SEP o.oo 3.00 -.00 -.00
L SEP 0.00 2.50 o.oo -.00
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
E JUN o.oo .80 0.00 0.00
L AUG 0.00 .50 -.00 -.00
E SEP 0.00 1.50 -.00 -.00
L SEP 0.00 2.00 0.00 -.00
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT. DIY NET
(CTCH/TME) (CTCH/HR) (CTCH/DRF)· (CTCH) . . :.
-.00 -.00 -.00 ':"".00
-.00 -.00 -.00 ~·.oo
-.oo -.00 -.00 ~.oo
-.00 -.00 -.00 -. ..:;~oo
-.00 -.00 -.oo ·-7.00
-.00 -.00 -.00 .-:~oo
-.00 -.00 -.00 :~·oo
-.00 -.00 -.00 -~.09
-.00 -.00 -.oo · ·-.00
-.oo 0.00 -.00 ~·.oo
-.00 -.00 -.00 -.00
-.00 -.00 -.00 -.~00
-.00 -.00 -.00 ·-~oo·
-.00 -.00 -.00 .-.oo·
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-1981, -~OJ:
burbot.
•;.
MINNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRFT" DIP .. NET·
SAMPLE (CTCB/TRP) (CTCB/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (C~Cll) .·
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
L AUG 0.00 2.00 o.oo -.00 -.00 -.00 -.00 -.• OP
E SEP 0.00 2.30 -.00 -.00 -.00 -.00 -.00 ":.:00·
L SEP 0.00 2.00 . -.00 -.00 -.00 0.00 -.00 ;;._.-oo
Birch Creek, R.M. 89.2, S/25N/05W/25/ABD
L AUG o.oo 2.00 0.00 -.00 -.00 0.00 -.00 . -7.00 .
E SEP o.oo .50 -.00 -.00 -.00 0.00 -.00 -"'·00
Cache Creek Slough, R.M. 95.5, S/26N/05W/35/ADC
DEC o.oo 1.40 -.00 -.00 -.00 -.00 -000 ·-:~00.
L JUN o.oo .30 0.00 0.00 -.oo -.00 -.00 ~.oo·
L JUL 0.00 .30 -.00 -.00 -.00 -.00 -.00 ... ~oo
E AUG o.oo .30 -.00 -.00 -.00 -.00 -.00 ~-~00
E SEP 0.00 .50 -.00 -.00 -.00 -.00 -.00 ~.oo
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fox:
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
L JUN o.oo .30 0.00 -.00
L JUL o.oo .50 -.00 -.00
E AUG 0.00 .30 -.00 -.oo
L AUG 0.00 .80 -.00 -.oo
Whiskers Creek Slough, R.M. 101.2, S/26N/OSW/03/ADB
E JUN 0.00 .so 0.00 -.00
L JUL 0.00 .80 o.oo -.oo
E AUG 0.00 1.30 -.oo -.oo
L AUG o.oo .30 -.00 -.oo
E SEP o.oo .80 -.oo 0.00
Whiskers Creek, R.M. 101.4, S/26N/05W/03/AAC
L AUG o.oo .so o.oo o.oo
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT DIP NET
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (C~¢H)
-.00 -.00 -.oo ~~00
-.00 -.00 -.00 ':"'::oo·
-.00 -.oo -.oo ~;_.~00·
-.00 -.00 -.oo ,.: ~ 00
-.00 -.00 -.oo -~00
-.00 -.00 0.00 ··.;· ·oo ..• -.oo -.oo -.oo ~.~·00·
-.00 -.00 -.oo "~;.00 -.oo -.00 -.oo ..-: ... oo
-.oo -.oo -.00 ... ~qo
Appendix Table EB.03 Catch per unit \ effort lower Susitna River habitat locations, 1980-1981. for
burbot.
'• . . . ..
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT iHP .NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
...
Slough 6A, R.M. 112 .3, S/28N/05W/13/CAC
E JUN 0.00 .50 o.oo -.00 -.00 -.00 -.00 ":--.00 .
L JUL 0.00 1.00 0.00 -.00 -.00 -.oo -.oo .;;·~oo.
E AUG 0.00 1.50 -.oo -.00 -.00 -.00 -.00 ~~QO .
L AUG .10 .30 0.00 -.00 0.00 -.00 -.oo ... oo
E SEP 0.00 1.50 -.00 -.00 -.oo o.oo -.00 T"·~.oo.
Lane Creek, R.M. 113 .6, S/28N/05W/12/ADD
L JUL 0.00 .50 0.00 -.00 -.00 -.00 -.00 ·-:.00 .. ·. L AUG 0.00 1.00 -.00 -.oo o.oo -.00 -.00 ·-:"··00
E SEP 0.00 .80 -.00 -.00 -.00 0.00 -.00 ~-~00
L SEP o.oo 1.00 -.00 -.00 -.00 -.oo -.00 :...~·.oo
Mainstem 2, R.M. 114.4, S/28N/04W/06/CAB
. .
L JUL 0.00 .50 0.00 -.00 -.00 -.00 -.00 -•. oo
E AUG 0.00 .50 -.00 -.00 -.00 -.00 -.00 · ..... 00
L AUG o.oo .30 -.00 -.00 0.00 -.00 -.00 .:...9o
E SEP 0.00 2.50 -.00 -.00 -.00 o.oo -.00 ~.oo
L SEP 0.00 3.00 0.00 -.00 -.00 -.oo -.00 ~~oo·.
Values; -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-19'81, :t:ar .
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT·· · . DIP NET
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DR~).. (~TCI{)
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
MAR -.00 .50 -.00 -eOO -.00 -.00 -.oo ,_: 00 ....
L JUN o.oo 0.00 .50 -.00 -.00 -.00 -.oo '·..:..:00
E JUL o.oo .30 0.00 -.oo -.00 -.00 -.OQ. ' .. ;; 00 . -~
L JUL o.oo .30 o.oo -.oo -.00 -.00 -.00 ."'9 00 ....
E AUG 0.00 1.00 0.00 -.00 -.00 -.00 •• oo ' .. -: .09·
L AUG 0.00 1.00 -.oo -.oo -.00 -.00 -.oo :·..,.~QO
L SEP o.oo 1.30 o.oo -.oo -.00 o.oo -.oo -.oo
Susitna Side Channel, R.M. 121.6 J S/2 9N/04W/11/BBB
L JUN o.oo .30 o.oo -.00 -.00 -.00 . -.oo ':"".00
L AUG 0.00 .30 0.00 -.00 -.00 -.oo -.oo ·:..:· 00 ...
L SEP 0.00 .30 o.oo -.00 -.oo -.oo -.oo '•':'"·.00
Values~ -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations 8 1980-1981, for
burbot.
';·· .. . . • ...
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT · DIP. NET.
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) · (C.TC_I:l)
..
Mainstem Susitna -Gravel Bar, R.M. 123.8, S/30N/04W/26/DDD
E JUL 0.00 .50 0.00 -.oo -.oo -.00 -.00 ··: .• oo
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
L JUL .10 .80 o.oo o.oo -.oo -.00 -.oo . ~·'00
E AUG o.oo .50 -.oo -.oo -.00 -.oo -.00 . ···<oo
Fourth of July Creek, R.M. 131.1, S/30N/03W/03/DAC
E AUG 0.00 .so 0.00 o.oo o.oo -.oo -.oo. ,.-.00
Slough 10, R.M. 133.8, S/31N/03W/36/AAC
L JUN 0.00 .80 0.00 o.oo o.oo -.00 -.oo ·.:::..oo
E AUG 0.00 .so o.oo o.oo -.oo -.00 -.oo .::..oo·
L AUG o.oo .80 -.oo -.00 -.00 -.00 -.oo -.. 00
Values= -.00 indicate no sample taken
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-J~l~1, fo-r·
burbot.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET HOOK&LINE
(CTCH/24H) (CTCH/HR)
Slough 11 1 R.M. 135.3, S/~1N/02W/19/DDD
L JUL 0.00 .30 o.oo -.oo
BEACH SN
(CTCH/TME)
o.oo
Mainstem Susitna -Inside Bend, R.M. 136.9, S/31N/02W/17/CDA
L AUG
L SEP
o.oo
o.oo .30
.30
o.oo
o.oo
Indian River, R.M. 138.6 1 S/31N/02W/09/CDA
L AUG o.oo 1.00 o.oo
Slough 20, R.M. 140.1, S/31N/02W/11/BBC
L JUL
L AUG
L SEP
o.oo
0.00
0.00
.50
.30
.30
Values• -.00 indicate no sample taken
0.00
-.00
-.00
-.00
-.00
o.oo
0.00
-.oo
-.00
-.00
-.oo
-.00
o.oo
-.oo
-.oo
ELECTRO
(CTCH/HR)
-.00
-.oo
-.oo
-.oo
o.oo
-.oo
-.oo
GILL DRFT
( CTCH/DRF) ·
-.oo
-.oo
-.oo
-.oo
o.oo .
-.oo·
-.oo
.~.: ...
DIP· NET
(CT~H) ....
o·.o()
<oo .: -.;.:..~oo
. .-.r._OO
~-·· ~)() ·-.oo ... :~.oo
Appendix Table EB.03 Catch per unit effort lower Susitna River habitat locations, 1980-1981, f~r
burbot.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Mainstem Susitna -Island, R.M. 146. 9, S/32N/01W/27/DBC
E JUN o.oo 1.50 0.00 -.00
E JUL o.oo 1.80 0.00 -.00
L JUL 0.00 1.50 0.00 -.00
E AUG o.oo 1.80 -.00 -.00
L AUG 0.00 2.00 -.00 -.00
E SEP o.oo 1.00 1.00 -.00
L SEP 0.00 .30 o.oo -.00
Portage Creek, R.M. 148.8, S/32N/01W/25/CDB
L JUL 0.00 .30 o.oo o.oo
E SEP o.oo .50 0.00 o.oo
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT
(CTCH/TME) (CTCH/HR) (CTCH/DRF)
-.00 -.00 -eOO
-.oo -.00 -.oo
-.00 -.oo -.oo
-.00 -.00 -.00 .
-.oo -.00 -.oo
-.oo -.oo 0.00
-.oo o.oo -.00
0.00 -.00 -.00
-.00 -.00 o.oo
DIP: NE'l'
(Ci'CH)
· -; •. uO . ..:..~oo
-::::·oo
. .-.oo ·"":.o·o·
:..;;.00
:.:..oo
-&00
··...:.:,00
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1981. for
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LlNE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
EJUN 0.00 0.00 1.00 0.00 o.oo -.00 -.00 p •. oo
L JUN o.oo o.oo 10.00 -.oo -.oo -.00 -.00. -.00
L SEP ' o.oo 0.00 5.00 -.00 -.oo -.00 -.oo -~oo
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
E SEP .10 o.oo o.oo -.00 -.00 -.00 o.oo -;OO
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
L AUG o.oo o.oo 0.00 -.00 .20 -.00 o.oo -.00
E SEP .10 . 0.00 -.00 -.00 .30 -.00 -.oo -.oo
L SEP o.oo o.oo .10 -.00 -.oo -.oo -.oo -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.04
I
Catch per unit effort lower Susitna River habit at locations, 1980-1981, for.
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Deshka River Site A, R.M. 40.6, T.R.M. 0.0, S/19N/06W/35/BDA
MAY 0.00 0.00 .50 -.00 -.00 -.00 -.00 -~oo
L SEP 0.00 o.oo 1.00 -.00 -.00 -.00 -.oo -.00
Deshka River Site B, R.M. 40.6, T.R.M. 1.0, S/19N/06W/26/BCB
L SEP .10 0.00 _1.00 o.oo -.00 -.00 o.oo -· .. 00
Little Willow Creek, R.M. 50.5, S/20N/OSW/27/AAD
L AUG 0.00 o.oo 0.00 0.00 -.00 -.00 .30 .... 00·
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
MAY o.oo o.oo 0.00 -.00 -.00 -.00 .so -.oo
L JUL o.oo 0.00 1.00 -.00 5.00 . -.00 o.oo -~.oo
L SEP 0.00 o.oo o.oo -.00 -.00 3.10 -.00 -.-00
Values= -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NE~
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCB/HR) (CTCH/TME) (CTCH/HR) (CTCB/DRJ!') (CTCH)
Sheep Creek Slough, R.H. 66.1, S/22N/04W/30/BAB
L SEP o.oo 0.00 2.00 . o.oo -.oo 0.00 -.oo -;00
Goose Creek 2, R.H. 73.1, S/23N/04W/30/BBB
E OCT o.oo o.oo o.oo -.00 o.oo 5.30 o.oo ....oo
Mainstem West Bank, R.H. 74.4, S/23N/05W/13/CCD
L SEP o.oo o.oo 1.00 -.00 -.00 o.oo -.oo. -.oo
Montana Creek, R.H. 77.0, S/23N/04W/07/ABA
E OCT 0.00 o.oo 0.00 o.oo -.00 4.00 -.oo o .• oo
Values• -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT Dlf NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCQ./HR) (CTCH/TME). (CTCH/HR) (CTCH/DRF) (CTC.H)
Mainstem 1, R.K. 84.0, S/24N/05W/10/DCC
E JUN 0.00 0.00 1.00 -.oo -.00 -.oo -.00 -.oo·
L JUL .10 0.00 0.00 -.00 -.oo -.00 -.oo -·.00
L SEP o.oo 0.00 1.50 -.00 -.00 o.oo -.oo -·.00
Sunshine Creek, R.K. 85.7, S/24N/05W/14/AAB
MAR 0.00 0.00 .50 -.oo -.00 -.00 -.oo -.QO
E JUN o.oo o.oo 5.50 o.oo -.oo -.00 -.oo ... ~oo
Birch Creek Slough, R.K. 88. 4, S/25N/05W/25/DCC
E OCT 0.00 0.00 0.00 -.00 -.00 12.00 -.oo ..... oo
Values= -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1.981, for
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP.NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRP) (CTGH)
Cache Creek Slough, R.M. 95.5, S/26N/05W/35/ADC
MAY 0.00 o.oo .30 0.00 -.oo 0.00 -.oo ~.oo
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
L SEP .20 o.oo 0.00 -.00 -.oo o.oo -.oo -.. oo
Whiskers Creek Slough, R.M. 101.2, S/26N/05W/03/ADB
E JUN 0.00 0.00 5.50 -.oo -.00 -.00 -.00 -•. 00
L JUN o.oo 0.00 5.00 -.00 -.00 -.00 o.oo -.00
L SEP 0.00 o.oo .30 0.00 -.00 -.00 -.00 -.00
Slough 6A, R.M. 112.3, S/28N/05W/13/CAC
L JUN 0.00 0.00 5.50 0.00 -.00 -.00 -.oo .... 00
E JUL 0.00 0.00 1.00 -.00 -.00 -.00 -.00 -.00
L JUL 0.00 o.oo 2.50 -.00 -.oo -.00 -.00 -.00
L AUG 0.00 o.oo 1.00 -.oo 0.00 -.00 -.00 -.. oo
L SEP o.oo o.oo 1.00 -.00 -.00 0.00 -.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Su~itna River habitat locations, 1980-1981, for:
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem 2, R.M. 114.4. S/28N/04W/06/CAB
· E JUN 0.00 o.oo 5.00 -.00 0.00 0.00 -.oo -.. 01)
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L JUN 0.00 o.oo 5.00 -.00 o.oo o.oo -.oo -.oo
L SEP 0.00 0.00 1.00 -.00 -.oo 20.00 -.oo ..... oo
Susitna Side Channel, R.M. 121.6 t S/29N/04W/ll/BBB
L SEP 0.00 0.00 1.00 -.00 -.00 -.00 -.oo -.o·o
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
L JUN 0.00 0.00 5.50 -.oo -.oo -.00 -.00 ~.oo
E JUL o.oo 0.00 1.00 o.oo -.00 -.00 -.00 -.o·o ..
Values= -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
round whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCU):
Slough 10, R.M. 133.8, S/31N/03W/36/AAC
L JUN o.oo 0.00 .50 o.oo o.oo -.00 -.oo -.-oo
L JUL o.oo o.oo 9.00 o.oo -.00 -.00 -.00 -~oo
Slough 11, R.M. 135.3, S/31N/02W/19/DDD
L JUL o.oo o.oo 12.00 -.00 o.oo -.00 o.oo (J.OO
Indian River, R.M. 138.6, S/31N/02W/09/CDA
E JUN o.oo o.oo 3.50 -.00 -.00 -.oo -.00 -... oo
E JUL o.oo 0.00 .50 0.00 -.00 -.00 -.00 -.0()
L SEP o.oo o.oo o.oo o.oo -.00 6.60 o.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.04 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
round whitefish.
MINNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCll)
Mainstem Susitna -Island, R.M. 146.9, S/32N/01W/27/DBC
E SEP o.oo 0.00 1.00 -.00 0.00 -.00 .30 .-.o.o
L SEP 0.00 .03 0.00 -.00 -.00 2.30 -.00 -•. 00
Portage Creek, R.M. 148.8, S/32N/01W/25/CDB
E JUN o.oo o.oo 12.00 -.00 -.oo -.00 -.oo .... oo
L JUL o.oo o.oo 1.00 0.00 0.00 -.00 -.oo .... oo
L SEP o.oo o.oo o.oo o.oo -.00 23.30 o.oo ... oo
Values= -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LlNE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24B) (CTCB/HR) (CTCB/TME) (CTCH/BR) (CTCH/DRF) (C!CH)
Alexander Creek Site A, R.M. 10.1, T.R.M. 0.0, S/15N/07W/06/DCA
E AUG o.oo .30 o.oo -.00 -.oo -.00 -.oo ·;....00
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0. S/16N/07W/32/CCB
E JUL o.oo o.oo 0.00 1.50 -.00 -.00 -.00 -.00
E SEP .10 0.00 -.00 o.oo -.oo -.00 -.00 -·.00
Alexander Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
E SEP 0.00 0.00 1.00 -.00 .70 -.00 -.oo 0.00
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
EJUN o.oo o.oo 35.00 -.00 -.00 -.oo -.00 -.. oo.
L JUN 0.00 o.oo 2.00 -.00 -.00 -.00 -.oo -.00
E JUL 0.00 o.oo 4.00 -.00 -.oo -.00 -.00 -,00
L AUG 0.00 0.00 '3.00 -.00 -.00 -.00 -.oo -.. oo
L SEP 0.00 o.oo 1.00 -.oo -.00 -.oo -.oo --00
Values= -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fo~
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Kroto Slough Mouth, R.M. 30.1, T.R.M. 2.0, S/17N/07W/01/DBC
E JUN o.oo o.oo .50 -.oo· -.00 -.oo -.oo -.00
L AUG .10 0.00 0.00 -.00 -.oo -.00 -.oo -.00
E SEP 0.00 0.00 1.00 -.00 -.oo -.00 -.00 -.oo
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
E JUL 0.00 o.oo 1.00 -.00 -.oo -.00 -.00 -.oo
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E JUL 0.00 o.oo 1.00 -.oo .20 -.00 0.00 -.oo
L AUG o.oo 0.00 2.00 -.00 o.oo -.oo o.oo -.00
L SEP o.oo o.oo 11.00 -.00 0.00 -.00 -.oo -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations, 1980-1981. for
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24B) (CTCH/HR) (CTCH/TME) (CTCB/HR) (CTCH/DRF·) (CTCH)
Deshka River Site A, R.M. 40.6, T.R.M. 0.0, S/l9N/06W/35/BDA
E SEP .10 0.00 o.oo -.oo -.00 -.oo -.oo -.·QO
L SEP o.oo o.oo 4.00 -.oo -.00 -.00 -.00 ... ·.o.o
Deshka River Site B, R.M. 40.6, T.R.M. 1.0 t S/19N/06W/26/BCB
MAY 0.00 o.oo .60 -.00 -.oo -.oo -.00 .~.oo
Deshka River Site c, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
MAY o.oo o.oo .70 0.00 -.oo -.00 o.oo -.oo
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
L SEP o.oo 0.00 3.00 o.oo 0.00 o.oo o.oo ..... oo
Values= -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fQJ'
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DI~.· NET
SAMPLE (CTCH/TRP} (CTCH/LNE} (CTCH/24H} (CTCH/HR} (CTCH/TME} (CTCH/HR} (CTCH/DRF} (CTCH}
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
FEB 0.00 0.00 • 70 -.oo· o.oo o.oo 0.00 ~ .. oo
Main stem 1, R.M. 84.0, S/24N/05W/10/DCC
L JUN 0.00 o.oo .50 0.00 -.00 o.oo -.00· .oo
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
E JUN o .. oo 0.00 6.50 0.00 -.oo 0.00 -.00 .oo
· Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
L SEP 0.00 o.oo o.oo -.oo -.00 7.10 -.00 ..... oo
Values; -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations 1 1980-1981, ·for
humpback whitefish.
MINNOW TRP TROT LINE GILL NET· HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP-NET.
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCB/24H) (CTCB/BR) (CTCH/TME) (CTCH/BR) (CTCH/DRF) (CTCH)
Whiskers Creek Slough, R.M. 101.2, S/26N/05W/03/ADB
L JUN o.oo 0.00 1.00 o.oo -.oo o.oo o.oo ':".00
Whiskers Creek, R.M. 101.4, S/26N/05W/03/AAC
E SEP .10 o.oo 0.00 o.oo -.00 -.00 -.00 -.·00
Slough 6A, R.M. 112.3' S/28N/05W/13/CAC
L JUN o.oo 0.00 4.00 0.00 -.oo -.00 -.oo ..... oo
E JUL 0.00 o.oo 4.00 -.00 -.00 -.00 -.00 ~.09
L AUG 0.00 o.oo 1.00 -.oo 0.00 -.00 -.00 -.00
L SEP o.oo o.oo 2.00 -.oo -.00 o.oo -.00 -..;00
Values= -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem 2, R.M. 114.4, S/28N/04W/06/CAB
L JUN o.oo o.oo 1.00 -.00 0~00 o.oo -.00 ..... 00
I
Slough 8A, R.M. 125 •. 3, S/30N/03W/30/BCD
E JUL o.oo o.oo 2.00 o.oo 0.00 o.oo -.00 -.00
L SEP 0.00 0.00 2.00 o.oo -.00 -.00 -.00 -.oo
Slough 10, R.M. 133 .8, S/31N/03W/36/AAC
L JUL 0.00 o.oo 7.00 0.00 o.oo -.00 -.00 -.oo
Slough 11, R.M. 135.3, S/31N/02W/19/DDD
L JUL o.oo o.oo 2.00 -.oo 0.00 -.00 o.oo o·.oo
Values~ -.00 indicate no sample taken
Appendix Table EB.05 Catch per unit effort lower Susitna River habitat locations 1 1980-1981 1 f.or
humpback whitefish.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP RET
SAMPLE {CTCH/TRP) (CTCH/LNE) {CTCH/24H) {CTCH/HR) (CTCH/TME) {CTCH/HR) (CTCH/DRF) {CTCH)
Indian River, R.M. 138.6 1 S/31N/02W/09/CDA
EJUN o.oo o.oo .50 ~.oo -.00 -.00 -.oo -.0.0
Mainstem Susitna -Island, R.M. 146.9 1 S/32N/01W/27/DBC
E SEP o.oo o.oo 1.00 o.oo o.oo o.oo o.oo -,oo
L SEP o.oo .30 o.oo -.00 -.oo o.oo -.00 -.oo
Portage Creek. R.M. 148.8, S/32N/01W/25/CDB
EJUN 0.00 o.oo 12.00 -.00 -.00 -.00 -.oo -.00
L SEP o.oo o.oo 0.00 o.oo o.oo 3.30 o.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.06 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fe~;
Bering cisco.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT OIP N~T
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH.)
Kroto Slough Mouth, R.M. 30.1, T.R.M. 2.0, S/17N/07W/01/DBC
E SEP 0.00 o.oo 1.00 0.00 0.00 -.00 -.00 o.oo
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
L SEP o.oo o.oo 2.00 -.00 0.00 -.oo o.oo ~.oo
Montana Creek, R.M. 77.0, S/23N/04W/07/ABA
E OCT 0.00 0.00 0.00 0.00 0.00 6.00 o.oo o.oo
Values~ -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP N!T
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCB/TME) (CTCH/HR) (CTCB/DRF) (CTCH)
Alexander Creek Site A, R.M. 10.1, T.R.M. 0.0, S/15N/07W/06/DCA
E JUL .10 o.oo o.oo -.oo -.oo -.00 -.00 --.oo
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0, S/16N/07W/32/CCB
E SEP .10 0.00 o.oo o.oo -.oo -.oo -.oo -.,oo
Alexander Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
E JUL .10 o.oo -.oo -.00 o.oo -.00 -.oo .... 00
L JUL .10 o.oo -.00 -.oo -.00 -.00 -.oo -.oo
L AUG .30 o.oo -.00 -.oo -.00 -.oo -.oo o.oo
E SEP o.oo o.oo 5.00 -.oo o.oo -.00 -.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (C~CH)
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
L JUN o.oo o.oo 31.00 -.oo -.00 -.00 -.00 -.00
E JUL 0.00 0.00 6.00 -.00 -.00 -.00 -.00 .... oo
E SEP o.oo 0.00 1.00 -.00 -.00 -.. 00 -.00 -.00
L SEP 0.00 0.00 1.00 -.oo -.00 -.00 -.00 -.oo
Kroto Slough Mouth, R.M. 30.1, T.R.M. 2.0, S/17N/07W/Ol/DBC
EJUN .10 0 o.oo 6.50 -.00 -.00 -.00 -.00 -.00
E JUL 0.00 o.oo 1.00 -.00 -.00 -.00 -.oo -.oo
L AUG .10 o.oo o.oo -.oo -.00 -.00 -.oo -.oo
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
L JUN 0.00 0.00 s.oo -.00 -.00 -.oo -.00 -,00
E JUL 0.00 0.00 7.00 -.00 -.oo -.00 -.00 ...;~00
E SEP .10 o.oo -.oo -.00 -.00 -.00 0.00 ..... oo
Values= -.00 indicate no sample taken
.Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fo:c
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E JUL 0.00 0.00 1.00 -.oo o.oo -.oo -.oo -.oo
E SEP 0.00 0.00 0.00 -.oo 1.60 -.00 o.oo ~-.00
L SEP 0.00 0.00 2.00 -.00 -.00 -.oo -.oo .-. ·oo·
Deshka River Site A, R.M. 40.6, T .R.M. 0.0, S/19N/06W/35/BDA
MAY o.oo o.oo .80 -.00 -.00 -.oo -.00 -·.00
L SEP o.oo o.oo 6.00 -.oo -.oo -.oo -.oo -.00
Deshka River Site B, R.M. 40.6, T.R.M. 1.0, S/19N/06W/26/BCB
MAY 0.00 0.00 3.90 -.00 -.oo -.00 -.oo -.00
E SEP .10 0.00 -.00 o.oo -.oo -.oo o.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations • 1980-l9.81 1 for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRFl (CTCH.)
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
MAY o.oo o.oo 10.70 -.00 -eOO -.oo -.oo -.. oo
E JUL .10 o.oo -.00 -eOO -.oo -.00 -.00 -.00
Lower Delta Island, R.M. 44.0, S/19N/05W/19/ACB
L JUN o.oo o.oo 3.00 -.00 -.oo· -.00 o.oo -00
Little Willow Creek, R.M. 50.5, S/20N/05W/27/AAD
E AUG o.oo o.oo o.oo o.oo -.00 -.00 .60 ~.oo
L AUG o.oo 0.00 -.oo -.00 -.00 -.00 .50 -·.oo
E SEP .20 o.oo -.00 -.oo -.oo -.00 -.00 .... oo
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fQr
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TaP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
L JUL 0.00 0.00 1.00 -.00 0.00 -.00 o.oo -.oo
Slough West Bank, R.M. 65.6 1 S/22N/05W/27/ADC
L SEP 0.00 ·0.00 5.00 o.oo -.00 o.oo -.00 -.06
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
L SEP 0.00 0.00 9.00 . -.00 -.00 o.oo -.oo -.00
Goose Creek 1, R.M. 72.0 1 S/23N/04W/31/BBC
L SEP 0.00 0.00 1.00 -.00 o.oo o.oo o.oo ;..._.00
Values~ -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-l981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Goose Creek 2, R.M. 73.1, S/23N/04W/30/BBB
L AUG .10 .30 -.00 -.00 -.00 -.oo -.00' -.00
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
L SEP o.oo 0.00 2.00 -.00 -.oo o.oo -.00 -.oo
Mainstem 1! R.M. 84.0, S/24N/05W/10/DCC
E JUN o.oo 0.00 1.50 0.00 -.00 o.oo -.00 o.oo
L JUN o.oo o.oo 1.50 -.00 -.00 -.00 -.00 -.. 00
E JUL .10 o.oo .50 -.00 -.00 -.00 -.00 -.00
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
E JUN 0.00 o.oo 11.00 o.oo -.00 0.00 -.00 -00
L JUL 0.00 .10 -.oo -.00 -.00 -.00 -.00 -.00
Values~ -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
L SEP· o.oo o.oo o.oo -.00 -.00 14.10 -.00 -.00
Birch Creek, R.M. 89.2, S/25N/05W/25/ABD
E JUN .10 o.oo 0.00 -.00 -.00 o.oo -.oo -.00
E AUG .10 0.00 o.oo -.oo -.oo -.00 -.00 -.oo
Cache Creek Slough, R.M. 95.5, S/26N/05W/35/ADC
MAY o.oo 0.00 1.00 o.oo -.00 o.oo -.00 ·-.00
E SEP .10 o.oo 0.00 -.00 -.00 -.00 -.00 -.00
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
E JUN o.oo o.oo 1.00 -.00 -.00 0.00 -.00 -.oo
E AUG .10 o.oo 0.00 -.00 -.00 -.00 -.00 -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE ( CTCH/TRP) ( CTCH/LNE) ( CTCH/24H) ( CTCH/HR) ( CTCH/TME) ( CTCH/HR) ( CTCH/DRF) (CTCH)
Whiskers Creek Slough, R.M. 101. 2, S/26N/05W/03/ADB
EJUN 0.00 0.00 3.00 -.00 -.00 -.00 -.ot -.00
L JUN o.oo o.oo 5.50 -.00 -.00 -.00 o.oo -.00
E JUL 0.00 0.00 1.00 -.oo -.00 -.oo -.oo -.oo
L JUL .10 o.oo -.00 -.oo -.oo -.00 -.00 -.00
E AUG .10 o.oo -.00 -.00 -.oo -.00 -.00 -.PO
Slough 6A, R.M. 112.3. S/28N/05W/13/CAC
L JUN o.oo 0.00 6.50 o.oo -.00 -.00 -.00 --00
E JUL .10 o.oo 3.00 -.00 -.00 -.00 -.oo ~.oo
L JUL .10 o.oo 4.50 -.00 -.00 -.00 -.oo -.oo
E AUG .10 o.oo -.00 -.00 -.00 -.00 -.oo -.oo
L AUG o.oo o.oo 1.00 -.00 o.oo -.00 -.00 -.00
L SEP o.oo o.oo 1.00 -.oo -.00 o.oo -.oo -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
longnose suckers.
MINNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCB/BR) (CTCH/DRF) (CTCH)
Lane Creek, R.M. 113.6, S/28N/05W/12/ADD
L JUN o.oo 0.00 1.50' -.00 -.oo -.00 -.00 .... oo
Mainstem 2, R.M. 114.4, S/28N/04W/06/CAB
E JUN o.oo 0.00 3.00 -.oo 0.00 o.oo -.oo -.00
L JUN .)0 o.oo 10.50 -.00 -.00 -.00 -.00 -.oo
L JUL .10 o.oo 0.00 -.00 -.00 -.00 -.00 -.oo
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L JUN o.oo o.oo 1.00 -.00 o.oo o.oo -.00 -.o-o
L SEP . o.oo o.oo 2.00 -.00 -.00 40.00 -.00 -.00
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980-1981. for.
longnose suckers.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIB NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCU)
Susitna Side Channel, R.M. 121.6' S/29N/04W/ll/BBB
L JU~ o.oo 0.00 1.50 -.00 -.oo -.00 -.oo -.oo
Mainstem Susitna -Gravel Bar, R.M. 123.8, S/30N/04W/26/DDD
L JUN o.oo o.oo 2.00 -.oo -.oo -.00 -.00 ~.oo
E JUL 0.00 o.oo 1.00 -.00 -.oo -.oo -.00 -•. oo
L JUL 0.00 .30 0.00 -.00 -.oo -.oo -.00 -.00
E AUG 0.00 o.oo 3.00 -.oo -.00 -.00 -.QO -.oo
L SEP 0.00 o.oo 1.00 -.00 -.00 -.oo -.00 -.00
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
L JUN o.oo o.oo 9.00 -.00 -.00 -.00 -.oo .... oo
E JUL o.oo o.oo 1.00 o.oo -.oo -.00 -.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980~1981, for.
longnose suckers.
MINNOW TRP · TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRF'I DIP NE'.J:
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCB/HR) (CTCH/TME) (CTCB/BR) (CTCB/DRF) (CTCH)
Slough 10, R.M. 133.8, S/31N/03W/36/ AAC
L JUN 0.00 o.oo 1.00 0.00 0.00 -.00 -.oo -.. oo
L JUL o.oo 0.00' 6.00 0.00 -.00 -.00 -.00 -.00
L AUG .20 o.oo 0.00 -.00 -.00 -.00 -.oo -.oo
Mainstem Susitna -Inside Bend, R.M. 136.9, S/31N/02W/17/CDA
L JUN 0.00 .30 o.oo -.00 0.00 -.00 o.oo o •. oo
Slough 20, R.M. 140.1, S/31N/02W/ll/BBC
L JUL .10 0.00 0.00 o.oo o.oo o.oo o.oo -.oo
Mainstem Susitna -Island, R.M. 146.9, S/32N/01W/27/DBC
E JUL 0.00 0.00 .50 -.00 -.00 -.00 -.00 -.00
E SEP o.oo o.oo 1.00 -.oo -.00 -.00 0.00 -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.07 Catch per unit effort lower Susitna River habitat locations, 1980..:l981, for
longnose suckers.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LIRE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Portage Creek, R.M. 148.8, S/32N/01W/25/CDB
E JUN o.oo 0.00 2.50 -.00
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT' DlF NEl
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
-.00 -.00 -.00 -.oo
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-l981, for
Dolly Varden.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
BEACH SN ELECTRO
(CTCH/TME) (CTCH/HR)
Alexander Creek Site A, R.M. 10.1, T.R.M. 0.0, S/15N/07W/06/DCA
E SEP .10 o.oo 0.00 -.00 -.00 -.00
Alexander Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
L JUN .20 o.oo 0.00 0.00 -.00 -.00
E JUL .10 o.oo -.00 -.oo 0.00 -.oo
E AUG .20 0.00 -.00 -.oo -.00 -.00
L AUG .20 o.oo -.oo -.00 -.00 -.00
Little Willow Creek, R.M. 50.5, S/20N/05W/27/AAD
MAR o.oo o.oo .20 0.00 o.oo -.00
L JUL .10 o.oo -.00 0.00 -.00 -.00
E AUG .10 0.00 -.00 -.00 -.00 -.00
Values= -.00 indicate no sample taken
GILL DRFT
(CTCH/DRF)
-.00
-.00
-.00
-.00
-.00
0.00
-.00
0.00
DIP N'ET.
(CTCH)
-.00
-.00
.0·.00
0.00 o.oo
-.00
-.00
-.00
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRF1. DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCB/HR) (CTCH/~ME) (CTCH/HR) (CTCH/DRF:} (CTCH)
Rustic Wilderness, R.M. 58.1, S/21N/05W/25/CBD
E AUG .10 o.oo o.oo -.00 -.00 -.00 -.00 -.oo
Kashwitna Rive.r, R.M. 61.0 1 S/21N/05W/13/AAA
MAY 0.00 o.oo o.oo -.00 -.00 -.00 .40 -.o-o
L JUN .60 2.30 -.oo -.00 -.00 -.00 -.00 -.oo
E JUL o.oo .20 -.00 -.00 -.00 -.oo -.00 -.oo
L JUL .40 1.50 o.oo -.oo o.oo -.oo o.oo -.00
E AUG .20 .30 -.00 -.00 -.00 -.00 -.00 -.00
L AUG .10 o.oo -.00 -.00 -.00 -.00 -.00 -.00
L SEP o.oo .30 1.00 -.oo -.oo 1.60 -.00 -.00
Slough West Bank, R.M. 65.6 1 S/22N/05W/27/ADC
L SEP o.oo o.oo 1.00 o.oo -.00 0.00 -.00 -.00
Values= -.00 indicate no sample taken
·Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations. 1980-1981, for
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT: DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
L SEP o.oo o.oo 2.00 -.00 -.00 o.oo -.oo -.00
Goose Creek 1, R.M. 72.0, S/23N/04W/31/BBC
L JUN o.oo .50 -.oo -.00 -.oo o.oo -.00 -.oo
E JUL o·.oo .80 o.oo -.oo o.oo -.00 o.oo -.00
Goose Creek 2, g.M. 73 .1, S/23N/04W/30/BBB
L JUL .10 o.oo o.oo -.00 -.00 o.oo o.oo -.oo
L SEP o.oo o.oo 1.00 -.00 -~00 -.oo -.oo -..oo
Montana Creek, R.M. 77.0, S/23N/04W/07/ABA
E AUG .10 o.oo o.oo o.oo -.oo o.oo -.00 o .• oo
Values= -.00 indicate no sample taken
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCB/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (C'fGlO
Mainstem 1, R.M. 84.0 • S/24N/05W/10/DCC
MAR 0.00 .10 -.oo -.oo -.00 -.00 -.oo -.00
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
E SEP o.oo .30 o.oo o.oo ,.;..00 o.oo -.oo -·.00
Birch Creek, R.M. 89.2, S/25N/05W/25/ABD
L JUL .10 o.oo o.oo -.oo -.oo o.oo -.oo -.00
Cache Creek Slough, R.M • 95.5, S/26N/05W/35/ADC
E JUL • 10 o.oo o.oo o.oo -.oo 0.00 -.00 -.00
Values= -.00 indicate no sample taken
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-1981, fQr
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DI~ NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Lane Creek, R.M. 113.6, S/28N/05W/12/ADD
L JUN 0.00' .30~ o.oo 0.00 o.oo .0.00 0.00 -.00
Mainstem 2, R.M. 114. 4, S/28N/04W/06/CAB
E JUN 0.00 .so o.oo -.oo o.oo o.oo -.oo -.00
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L JUN 0.00 0.00 .50 -.oo o.oo o.oo -.00 -.oo
Susitna Side Channel, R.M. 121.6 I S/29N/04W/11/BBB
L SEP o.oo .30 o.oo -.00 -.00 0.00 -.oo -.00
Values= -.00 indicate no sample taken
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (O.TCH)
Slough SA, R.M. 125.3, S/30N/03W/30/BCD
L JUN o.oo 0.00 .50 -.00 -.00 -.oo -.00 --.00
Fourth of July Creek, R.M. 131.1, S/30N/03W/03/DAC
L AUG 0.00 0.00 0.00 .30 0.00 -.00 -.00 --.oo
Slough 10, R.M. 133.8, S/31N/03W/36/AAC
)!: AUG .10 o.oo o.oo o.oo o.oo -.00 -.oo -.00
Indian River, R.M. 138.6, S/31N/02W/09/CDA
E JUN 0.00 o.oo .50 -.00 0.00 -.oo 0.00 0~00
E SEP o.oo 0.00 o.oo 0.00 -.00 -.00 .20 -.oo
L SEP o.oo .30 0.00 -.00 -.00 0.00 -.00 -.·00
Values= -.00 indicate no sample taken
Appendix Table EB.08 Catch per unit effort lower Susitna River habitat locations, 1980-1'981, fd.r
Dolly Varden.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DR~)
Portage Creek, R.M. 148.8, S/32N/01W/25/CDB
EJUN o.oo o.oo 2.50 -.00 o.oo o.oo
Values= -.00 indicate no sample taken
D:J:JJ.NET
(Cl(JH).
;:..oo
Appendix Table EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981 1 for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCB/HR) (CTCH/DRF) (CTCH)
Alexander Creek Site A 1 R.M. 10.1. T.R.M. 0.0. S/15N/07W/06/DCA
E JUN 68.00 o.oo o.oo -.oo -.oo -.oo -.oo -.00
E JUL 36.50 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
L JUL 1.40 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.00 -.00 -.oo -.oo -.00 -.oo
Alexander Creek Site B1 R.M. 10.1. T.R.M. 2.0. S/16N/07W/32/CCB
E JUL 34.70 o.oo o.oo o.oo -.00 -.00 -.oo -.oo
L JUL 7.60 o.oo -.00 o.oo -.oo -.00 -.oo -.oo
E AUG .20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
LAUG .30 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
Alexander Creek Site c. R.M. 10.1. T.R.M. 4.0 1 S/16N/07W/30/ACD
L JUN 55.90 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
t JUL 28.90 o.oo -.oo · -.oo .30 -.oo -.oo -.oo
L JUL 1.00 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG o.oo o.oo -.oo -.oo -.oo -.oo -.oo 19.30
Values• -.00 indicate no sample taken
Appendix Table EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCB/HR) (CTCH/TME) (CTCH/HR)
G~LL DRFT DIP NET
(CTCH/DRF) (CTCH)
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUN 88.40 0.00 o.oo -.oo -.oo -.oo -.oo -.00
L JUN 37.00 o.oo 1.00 -.oo -.oo -.oo -.oo -.oo
E JUL 49.90 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Kroto Slough Mouth, R.M. 30.1, T.R.M. 2.0, S/17N/07W/Ol/DBC
E JUN 59.20 o.oo o.oo -.00 -.oo -.00 -.00 -.00
L JUN 1.60 o.oo -.00 -.00 -.00 -.00 -.00 -.oo
E JUL 45.20 o.oo o.oo -.00 -.oo -.oo -.oo -.oo
L AUG .20 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Mainstem Slough, R.M. 31.0, S/l7N/06W/05/CAB
L JUN .50 o.oo 0.00 -.00 -.oo -.oo -.oo -.00
E JUL 6.60 0.00 o.oo -.oo -.oo -.oo -.oo -.00
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
I
E JUL 4.00 o.oo o.oo -.oo .60 -.00 o.oo -.oo
Values~ -.00 indicate no sample taken
Appendix ~able EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Deshk~ River Site A, R.M. 40.6, T.R.M. 0.0, S/19N/06W/35/B~
L JUN 19.00 o.oo o.oo -.oo -.oo -.oo -.oo -,00
E JUL 29.00 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
L JUL .10 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Deshka River Site B, R.M. 40.6 I T.R.M. 1.01 S/19N/06W/26/BCB
MAY 1.40 0.00 o.oo -.00 -.oo -.oo -.oo -.oo
L JUN 39.90 0.00 -.00 -.00 -.oo -.oo -.oo -.oo
E JUL 21.50 o.oo -.oo -.00 -.00 -.oo -.oo -.00
L JUL 1.20 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo o.oo -.00
L SEP .10 o.oo o.oo o.oo -.oo -.oo -.oo -.oo
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCl
E JUL 14.70 0.00 o.oo -.oo -.oo -.oo -.oo -.oo
L JUL .10 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
E AUG .40 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L AUG .20 o.oo -.00 -.00 -.oo -.oo -.oo -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) {CTCH/LNE) (CTCH/24H) {CTCH/BR) (CTCH/TME) (CTCH/HR) {CTCH/DRF) {CTCH)
Lower Delta Island, R.M. 44.0. S/19N/05W/19/ACB
L JON 1.30 o.oo .so -.oo -.oo -.oo -.oo -.oo
E JOL .30 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Little Willow Creek, R.M. 50.5 8 S/20N/05W/27/AAD
L JON 7.50 o.oo o.oo o.oo -.oo -.oo o.oo -.oo
E JOL 9.10 o.oo -.oo o.oo -.oo -.oo -.oo -.oo
L JUL .30 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .20 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
Rustic Wilderness, R.M. 58.1, S/21N/05W/25/CBD
L JON 2.90 0.00 o.oo -.oo -.oo -.00 o.oo -.oo
L JUL .20 0.00 o.oo -.oo -.oo -.oo -.oo -.oo
Kashwitna River, R.M. 61.0, S/21N/05W/13/AAA
L JUN 4.30 0.00 0.00 -.00 -.oo -.oo o.oo -.oo
E JOL • 20 o.oo -.oo -.00 -.oo -.oo -.oo -.00
Values• -.00 indicate no sample taken
Appendix Table ~B.09 Catch per unit effort lower Sueitna River habitat locations, 1980-1981, for
threespine stickleback.
MJNNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GiiLL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCH/24H) (CTCH/BR) (CTCB/TME) (CTCH/HR) · (CTCH/DRF) (CTCH)
Caswell Creek, R.M. 63.0, S/21N/04W/06/BDD
tiAY .10 -.00 o.oo o.oo -.oo -.oo -.oo -.oo
L JUN 37.80 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
E JUL 3.90 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
L JUL 8.10 o.oo o.oo -.oo -.oo -.00 -.oo -.oo
E AUG 1.70 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L AUG .70 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP • 90 o.oo o.oo -.oo -.oo -.oo -.oo -.00
Sheep Creek Slough, a.M. 66.1, S/22N/04W/30/BAB
L JUN 35.10 o.oo o.oo -.oo -.oo o.oo -.oo -.oo
E JUL 4.30 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUL 1.00 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
E AUG .40 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.00
Values• -.00 indicate no sample taken
Appendix 'hl>h EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981. for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCB/24B) (CTCH/BR) (CTCB/TME) (CTCB/HR) (CTCH/DRF) (CTCH)
Goose Creek 1. R.M. 72.0, S/23N/04W/31/BBC
L JUN 3.40 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E JUL 2.50 o.oo o.oo -.00 o.oo -.oo o.oo -.oo
L JUL • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
L AUG • 90 0.00 -.00 -.oo -.oo -.oo -.oo -.oo
L SEP o.oo o.oo o.oo -.oo -.oo 1.00 o.oo -.oo
Mainstem West Bank, R.M. 74.4. S/23N/05W/13/CCD
E JUL .10 0.00 o.oo -.oo -.oo o.oo -.oo -.oo
L AUG .10 o.oo o.oo -.oo -.oo -.00 -.00 -.oo
Montana Creek, R.M. 77.0, S/23N/04W/07/ABA
MAY .10 0.00 0.00 o.oo -.oo o.oo -.oo o.oo
L JUN 8.30 0.00 -.oo -.oo -.oo -.oo -.oo -.00
E JUL 0 90 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUL • 20 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
L AUG .40 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Ta~le EB.09 Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/RR) (CTCH/DRF) (CTCH)
Mainstem 1, R.M. 84.0 I S/24N/05W/10/DCC
E JUN 2.30 o.oo o.oo -.oo -.00 -.oo -.oo -.oo
L JUN 5.80 o.oo o.oo -.oo -.oo -.oo -.oo -.00
E JUL 9.00 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUL .60 o.oo -.oo -.oo -,00 -.oo -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
E JUN 44.00 o.oo o.oo o.oo -.oo o.oo -.oo -.oo
L JUN 39.40 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E JUL 50.50 o.oo -.oo -.oo -.oo -.oo -.oo -.00
L JUL 18.10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG 1.00 o.oo -.oo -.oo -.00 -.oo -.oo -.oo
L AUG 12.10 o.oo -.oo -.oo -.oo -.oo -.oo -.00
E SEP .30 o.oo -.oo -.00 -.00 -.oo -.oo -.oo
L SEP .30 o.oo o.oo -.oo -.00 -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.09, Cat~h per unit effort ~ower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Birch Creek Slough, R.M. 88.4, S/25N/05W/25/DCC
E JUN 36.70 o.oo o.oo -.oo. -.oo -.oo -.oo -.oo
L JUN 18.10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E JUL 15.70 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUL 1.50 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E SEP .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .40 o.oo -.00 -.oo -.oo o.oo -.oo -.oo
Birch Creek, R.M. 89.2, S/25N/05W/25/ABD
JAN .30 o.oo o.oo -.oo -.00 o.oo -.oo -.oo
MAR .40 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUN 24.70 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUN 28.80 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL 14.00 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUL 7.80 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E AUG 4.90 o.oo -.oo -.oo -.00 -.oo -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E SEP .40 o.oo -.00 -.oo -.oo o.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.09 Catch per unit effort lower Susitna River habitat loc:ations
1
, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET BOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCB/24H) (CTCB/RR) (CTCB/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Cache Creek Slough, R.M. 95.5, S/26N/05W/35/ADC
MAY .10 0.00 o.oo o.oo -.oo -.oo -.oo -.oo
E JUN .40 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL .40 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Cache Creek, R~M. 96.0, S/26N/05W/26/DCB
E JUN 30.90 o.oo o.oo -.oo -.oo o.oo -.oo -.oo
L JON 10.90 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL 7.10 o.oo -.oo -.oo -,00 -.oo -.oo -.oo
L JUL 0 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
Whiskers Creek Slough, R.M. 101.2. S/26N/05W/03/ADB
E JON 23.40 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUN 8.30 o.oo o.oo -.oo -.oo -.oo o.oo -.oo
E JUL 4.60 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUL 1.20 o.oo -.oo -.oo · -.oo -.oo -.oo -.oo
E AUG 1.50 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
'
Values• -.00 indicate no sample taken
Appendix Table ~B~09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/BR)
Whiskers Creek, R.M. 101.4, S/26N/05W/03/AAC
MAR .01 o.oo o.oo -.oo
E JUN 26.40 o.oo o.oo o.oo
L JUN 15.80 o.oo o.oo o.oo
E JUL 4.80 o.oo -.oo o.oo
L JUL 9.50 o.oo -.oo -.oo
E AUG 1.30 o.oo -.00 -.oo
L AUG 1.30 o.oo -.00 -.00
E SEP .10 o.oo -.oo -.oo
Slough 6A • R.K. 112.31 S/28N/05W/13/CAC
E JUN 77.30 o.oo o.oo o.oo
L JUN ' 64.40 o.oo o.oo -.oo
E JUL 17 .so o.oo o.oo -.oo
L JUL • 90 o.oo o.oo -.oo
E AUG .40 o.oo -.oo -.oo
L AUG .10 o.oo o.oo -.oo
Values• -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT DIP NET
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
-.oo -.oo -.oo -.oo
-.oo -,00 -.oo -.oo
-.oo -.oo :-.00 -.oo
-,00 -.oo -.oo -.oo
-,00 -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.00 -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.00 -.oo -.oo
18.00 -.oo -.oo -.oo
Appendix Table 88.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
SAMPLE
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Lane Creek, R.M. 113.6. S/28N/05W/12/ADD
E JUN 7.70 o.oo o.oo -.oo
L JUN 1.60 o.oo o.oo -.oo
E JUL .80 o.oo o.oo -.oo
L JUL • 20 o.oo -.00 -.oo
Mainstem 2, R.M. 114.4. S/28N/04W/06/CAB
E JUN 9.30 o.oo o.oo -.oo
L JUN 5.20 o.oo o.oo .. -.oo
E JUL 2.10 o.oo o.oo -.oo
L JUL .20 o.oo -.oo -.oo
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L JUN 1.00 o.oo o.oo -.oo
Values• -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT DIP NET
(CTCB/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
-.oo -.oo .. -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
o.oo o.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
-.oo -.oo -.oo -.oo
o.oo o.oo -.oo -.oo
1 'I" Appendix Table ,JB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO G~LL DRFT DIP NET
(CTCB/TRP) (CTCB/LNE) (CTCB/24B) (CTCB/HR) (CTCB/TME) (CTCH/BR) (CTCB/DRF) (CTCB) SAMPLE
Slough 8A, R.M. 125.3. S/30N/03W/30/BCD
L JUN 6.50 o.oo o.oo -sOO -.oo -.oo -.oo -.oo
E JUL 1. 70 o.oo o.oo o.oo -sOO -.oo -.oo -.oo
L JUL • 20 o.oo 0.00 -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
L SEP .01 o.oo o.oo o.oo -.oo -.oo -.oo -.oo
Fourth of July Creek, R.M. 131.1, S/30N/03W/03/~C
E JUL .30 o.oo o.oo o.oo o.oo -.oo -.oo -.oo
Slough 10, R.M. 133.8, S/31N/03W/36/AAC
L JUN 4.00 o.oo o.oo o.oo o.oo .... oo -.oo -.oo
E JUL 3.00 o.oo o.oo o.oo -.oo -.oo -.00 -.oo
L JUL 1.20 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG .40 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E SEP • 20 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L SEP .30 o.oo o.oo -.oo -.00 -.oo -.oo -.oo
ValuesK ~.00 indicate no sample taken
Appendix Table EB.09 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
threespine stickleback. ,
MINNOW TRP TROT LINE GILL NET HOOK&LINE ' BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24B) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCB)
Slough 11, a.M. 135.3, S/31N/02W/19/DDD
L JUN .70 o.oo -.oo -.oo . o •. oo -.oo -.oo o.oo
E JUL .40 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUL ,10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Slough 20, R.M. 140,1, S/31N/02W/11/BBC
E JUN 2.50 o.oo o.oo o.oo -.oo 0,00 o.oo -.oo
E JUL .20 o.oo -.oo -.oo 0,00 -.oo -.oo -.oo
Mainstem Susitna -Island, R.M. 146.9, S/32N/01W/27/DBC
E JUN .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.lO Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
co ttids. '
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
.SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Alexander Creek Site A, R.M. 10.1. T.R.M. 0.0. S/15N/07W/06/D~
JAN .10 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
L AUG .1o: o.oo 0.00 -JOO -.oo -.00 -.oo -.oo
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0. S/16N/07W/32/CCB
E JUL .10 o.oo 0.00 0.00 -.00 -.00 -.00 -.00
E AUG .10 0.00 -.00 0.00 -.oo -.oo -.oo -.oo
L AUG .40 o.oo -.00 -.00 -.oo -.oo -.00 -.oo
E SEP .10 0.00 -.oo -.oo -.oo -.oo -.00 -.oo
Alexander Creek Site C8 R.M. 10.1, T.R.M. 4.0 1 S/16N/07W/30/ACD
L AUG .20 o.oo -.00 -.oo o.oo -.00 -.00 o.oo
E SEP .10 o.oo 0.00 -.oo o.oo -.oo -.oo -.00
Anderson Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUL .10 0.00 0.00 -.00 -.00 -.00 -.oo -.00
L AUG .10 0.00 0.00 -.00 -.oo -.00 -.oo -.oo
Values• -.00 indicate no sample taken
I
Appendix Table EB.lO Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCB/DRF) (CTCH)
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
L AUG o.oo o.oo o.oo -.oo .6o· -.oo o.oo -.oo
E SEP 0.00 o.oo -.oo -.oo 1.30 -.oo -.oo -,00
Deshka River Site A, R.M. 40.6, T.R.M. o.o. S/19N/06W/35/B~
L JUN .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
L AUG .10 0.00 -.00 -.oo -.oo -.oo -.00 -.oo
E SEP .10 o.oo -.oo -.oo -.00 -.oo -.oo -.oo
L SEP .10 o.oo o.oo -.oo -.oo -.00 -.oo -.oo .
Deshka River Site B, R.M. 40.6, T.R.M. 1.0. S/19N/06W/26/BCB
E JUL .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L JUL • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L AUG .30 o.oo -.00 -.00 -.oo -.00 -.oo -.oo
E SEP .20 o.oo -.oo o.oo -.oo -.oo -.oo -.oo
L SEP • 20 o.oo o.oo -.oo -.oo -.00 -.oo -.oo
Values• -.00 indieate no sample taken
Appendix Table EB.10 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE · BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCB/TRP) (CTCB/LNE) (CTCB/24B) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
E JUL .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L AUG .20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
' Little Willow Creek, R.M. 50.5, S/20N/05W/27/AAD
L JUN • 20 o.oo o.oo o.oo -.oo -.oo o.oo -.00
E JUL .70 o.oo -.00 o.oo -.oo -.oo -.oo -.00
L JUL .30 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
E AUG .30 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L AUG .20 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
L SEP .30 o.oo -.oo -.oo -.oo -.00 -.oo -.00
Rustic Wilderness, R.M. 58.1, S/21N/05W/25/CBD
L JUN .10 o.oo o.oo -.oo -.oo -.oo -eOO -.00
L JUL .10 o.oo o.oo -.oo -.oo -.00 -.oo -.oo
E AUG .10 0.00 o.oo -.oo -.oo -.oo -.oo -.oo
Values= -.00 indicate no sample taken
Appendix Table EB.lO
··~'"I·"''. 'f •·''.'
Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids.
MINNOW TRP TROT LINE GILL NET HOOK&LINB BEACH SN ELECTRO GILL DRFT DIP NET
_SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCR)
Kashwitna River, R.M • 61.0, S/21N/05W/13/AAA
L JUN • 10 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
E JUL .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUL • 20 o.oo o.oo -.oo 1.00 -.oo o.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .30 o.oo o.oo -.oo -.oo o.oo -.oo -.oo
Caswell Creek, R.M. 63.0, S/21N/04W/06/BDD
MAY .40 -.00 o.oo o.oo -.oo o.oo -.oo -.oo
L JUN .20 o.oo -.oo -.oo -.oo -.oo. -.oo -.oo
L JUL .10 o.oo o.oo -.oo -.oo -eOO -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L AUG .10 0.00 -.oo -.oo -.00 -.oo -.oo -.oo
L SEP .20 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Slough West Bank, R.M. 65.6, S/22N/05W/27/ADC
L SEP .10 o.oo o.oo -.oo -.oo o.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.10 Catch pe~ unit effort lower Susitna River habitat locations 8 1980-1981, for
cottids. ·
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
~MPLE (CTCB/TRP) (CTCH/LNE) (CTCH/24B) (CTCB/HR) (CTCH/TME) (CTCB/HR) (CTCH/DRF) (CTCH)
Sheep Creek Slough, R.M. 66.1, S/22N/04W/30/BAB
E JUL .20 0.00 o.oo · -.oo -.oo -.oo -.00 -.oo
L JUL .20 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L AUG • 20 o.oo -.00 -.oo -.00 -.oo -.oo -.oo
Goose Creek 1, R.M. 72.0, S/23N/04W/31/BBC
L JUN .80 0.00 0.00 -.00 -.oo o.oo -.oo -.oo
E JUL 1.00 o.oo o.oo -.oo o.oo -.oo o.oo -.oo
L JUL .20 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
E AUG .10 o.oo -.oo -.00 -.00 -.00 -.00 -.oo
L AUG • 20 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
L SEP o.oo o.oo o.oo -.00 -.oo 1.00 o.oo -.oo
Goose Creek 2 1 R.M. 73.1, S/23N/04W/30/BBB
L JUL .10 o.oo -.oo -.oo -.oo -.00 -.oo -.oo
L AUG • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .10 o.oo o.oo -.oo -.oo -.oo -~00 -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.lO Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
c:o ttida.
MINNOW TRP TROT LINE GILL NET ROOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCR/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem West Bank, R.M. 74.4, S/23N/05W/13/CCD
L AUG .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L SEP o.oo o.oo o.oo -.00 -.oo 12.00 -.oo -.oo
Montana Creek, R.M. 77.0, S/23N/04W/07/ABA
NOV •. 10 -.oo -.oo -.00 -.oo -.oo -.oo -.oo
MAY .10 o.oo o.oo o.oo -.oo -.oo -.oo o.oo
L JUN .30 o.oo -.oo -.oo -.oo -.oo -.oo -.00
E JUL .20 o.oo -.oo -.00 -.00 -.oo -.oo -.oo
L JUL • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG • 90 o.oo -.00 -.oo -.oo -.00 -.oo -.oo
L AUG .30 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E SEP .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .40 o.oo -.oo -.oo -.00 -.oo -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Table ~B.10 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
co ttids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCR/TME) (CTCR/HR) (CTCR/DRF) (CTCH)
Sunshine Creek, R.M. 85.7, S/24N/05W/14/AAB
MAR .10 0.00 o.oo -.oo -.00 o.oo -.oo -.oo
MAY .60 -.oo 0.00 o.oo -.oo -.00 -.oo -.oo
E JUN .10 . 0.00 o.oo -.oo -.oo -.oo -.oo -.oo
L JUN .10 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
E JUL .10 o.oo -.00 -.oo -.oo -.oo -.00 -.oo
L JUL • 20 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
E SEP .10 o.oo -.00 -.00 -.oo -.oo -.oo -.oo
L SEP .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Birch Creek Slough 8 R.M. 88.4, S/25N/05W/25/DCC
E JUN .10 o.oo 0.00 -.oo -.oo -.oo -.oo -.oo
L JUN .10 o.oo -.00 -.oo -.oo -.oo -.oo -,00
E JUL .10 o.oo -.00 -.00 -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table ~8.10 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Birch Creek, R.M. 89. 2, S/25N/05W/25/ABD
FEB .10 o.oo o.oo -.00 -.oo -.oo -.oo -.oo
MAR .20 -.00 .so -.oo -.oo -.oo -.oo -.oo
E JUN .10 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
L JUN .30 o.oo o.oo -.oo -.oo -.oo -,00 -.oo
E JUL 2.00 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG 2.00 1 o.oo 0.00 -.100 -.oo -.oo -.oo -.oo
E SEP • 50 o.oo -.oo -.oo -.oo 25.00 -.oo -.oo
Cache Creek Slough, R.M. 9 5. 5, S/26N/0 SW/3 5/ADC
MAY .10 o.oo o.oo o.oo -.oo -.00 -.oo -.oo
L JUN .10 0.00 o.oo -.oo -.oo -.00 -.00 -.oo
E AUG .10 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.~O Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
co ttida.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE {CTCH/TRP) {CTCH/LNE) {CTCH/24H) {CTCR/HR) {CTCB/TME) {CTCH/HR) {CTCH/DRF) {CTCH)
Cache Creek, R.M. 96.0, S/26N/05W/26/DCB
E JUN .10 0.00 o.oo -.oo -.oo -.oo -.oo -.00
L JUN .20 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL .30 0.00 -.oo -.oo -.oo -;00 -.oo -.oo
L JUL .10 o.oo -.00 -.oo -.oo -.oo -.oo -.oo
E AUG • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.00
L AUG .40 0.00 -.oo -.00 -.oo -.oo -.oo -.oo
E SEP .20 o.oo -.oo ;_.00 -.oo -.oo -.oo -.oo
Whiskers Creek Slough, R.M. 101.2. S/26N/05W/03/ADB
E JUL • 20 0.00 o.oo -.oo -.oo -.oo o.oo -.00
L JUL .30 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
E AUG 1.30 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
L AUG .30 0.00 -.00 -.00 -.oo -.oo -.oo -.oo
E SEP • 80 0.00 -.00 o.oo -.oo -.oo -.00 -.00
Values• -.00 indicate no sample taken
Appendix Table ~B.~O Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids,
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCB/LNE) (CTCB/24H) (CTCB/BR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Whiskers Creek, R.M. 101.4, S/26N/05W/03/AAC
MAR .10 o.oo o.oo -.oo -,00 -.oo -.oo -.oo
E JUL .40 o.oo o.oo o.oo -.oo -.oo -.oo -.oo
L JUL .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E AUG .20 o.oo -.oo -.oo · -.oo -.oo -.oo -.oo
L AUG .20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
Slough 6A, R.M, 112.3, S/28N/05W/13/CAC
E JUN .10 o.oo o.oo o.oo -.oo -.oo -.oo -.oo
L JUN .10 o.oo o.oo /-.oo -.oo -.oo -.oo -.oo
E JUL .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG o.oo o.oo o.oo -.oo 6.00 -.oo -.oo -.oo
Lane Creek, R.M. 113.6, S/28N/05W/12/ADD
L JUN ,20 o.oo o.oo -.oo -.oo o.oo -.oo -.00
E JUL .10 o.oo 0,00 -.oo -,00 -.oo -.oo -.oo
E AUG .20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L AUG o.oo o.oo -.oo -.oo 1.00 -.oo -.oo -.oo
E SEP .10 o.oo -.oo -.oo -.oo o.oo -.oo -.oo
Values• -,00 indicate no sample taken
Appendix Table J;B, 10 Catch per unit effort lower Suaitna River habitat locations • 1980-1981, for
co ttids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCB/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem 2, R.M. 114.4. S/28N/04W/06/CAB
L JUN .10 o.oo o.oo -.oo .... oo -.oo -.oo -.oo
L JUL .10 o.oo o.oo -.oo ~.oo -.oo -.oo -.oo
E AUG .10 o.oo -.oo -.oo -.oo -.oo -~00 -.oo
L AUG .10 o.oo -.oo -.oo 1.00 -.oo -.oo -.oo
Mainstem Susitna -Curry, R.M. 120.7, S/29N/04W/10/BCD
L AUG o.oo .10 o.oo -.00 -.oo o.oo -.oo -.oo
Susitna Side Channel, R.M. 121.6. S/29N/04W/11/BBB
L AUG .10 o.oo o.oo -.oo -.oo o.oo -.oo -.oo
L SEP .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Table EB.lO Catch per unit effort lower Susitna liver habitat locations, 1980-1981, for
cottids.
MINNOW TIP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCR/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/BI) (CTCB/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Mainstem Susitna -Gravel Bar, R.M. 123.8, S/30N/04W/26/DDD
E JUL .30 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG .10 o.oo 0.00 -.oo -.oo -.oo -.oo -.oo
Slough 8A 1 R.M. 125.3 • S/30N/03W/30/BCD
FEB .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
APR .30 -.00 -.oo -.oo -.oo -.oo -.oo -.oo
L JON .20 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
Fourth of July Creek, R.M. 131.1 1 S/30N/03W/03/~C
L JON .10 o.oo 0.00 o.oo o.oo -.oo -.oo -.oo
E JUL .10 o.oo o.oo o.oo o.oo -.oo -.oo -.oo
L JUL .20 o.oo o.oo o.oo -.oo -.oo -.oo -.oo
E AUG .10 0.00 -.oo o.oo -.oo -.oo -.oo -.oo
L AUG .20 o.oo -.oo o.oo -.oo .-.oo -.oo -.oo
E SEP .10 o.oo -.oo o.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Tabl~ EB.lO Catch per unit effort lower Suaitna River habitat locations, 1980-1981, for
cottids.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR) (CTCH/DRF) (CTCH)
Slough 10. R.M. 133.8, S/31N/03W/36/AAC
FEB .10 0.00 -.oo -.oo -.oo -.oo -.oo -.oo
MA.R • 50 -.oo -.oo -.oo -.oo -.oo -.oo -.oo
APR .30 -.oo -.oo -.00 -.oo -.oo I -.oo -.oo
L JUN .20 o.oo o.oo -.oo 1.00 -.oo -.oo -.oo
E JUL • 20 0.00 o.oo o.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo o.oo -.00 -.oo -.oo -.oo -.00
E SEP .10 o.oo -.oo -.oo -.oo -.oo o.oo -.oo
Slough 11, R.M. 135.3. S/31N/02W/19/DDD
APR .10 o.oo o.oo -.00 o.oo -.00 -.oo o.oo
L JUN .40 o.oo -.00 -.00 o.oo -.oo -.oo -.oo
E JUL .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L JUL • 50 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
E SEP 0 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .10 o.oo -.oo -.oo -.oo -.oo -.00 -.oo
Values• -.00 indicate no sample taken
Appendix Ta])l~ .)!:~-~ lO . . I Catch per unit effort lower Susitna liver habitat locations, 1980-1981, for
cottids. ' 1
MINNOW TIP TROT LINE GILL NET HOOK&LINE BEACH SN .ELECTRO GILL DRFT DIP NET
SAMPLE (CTCH/TRP} (CTCH/LNE} (CTCH/24H) (CTCH/Hl) (CTCH/TME) (CTCB/HR) (CTCH/DRF) (CTCH)
Mainstem Susitna -Inside Bend, l.M • 136.9, S/31N/02W/17/Cnl
L JUN • 10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E AUG .10 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
L AUG .10 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP .10 o.oo o.oo -.00 -.oo -.oo -.oo -.00
lnd ian River • a.M. 138.6, S/31N/02W/09/CDA
E JUL .40 o.oo o.oo o.oo -.oo -.oo -.oo -.00
E AUG • 20 o.oo o.oo o.oo -.oo -.oo -.oo -.00
E SEP .10 o.oo o.oo o.oo -.oo -.oo o.oo -.oo
L SEP .10 o.oo 0.00 -.oo -.oo o.oo -.oo -.oo
Slough 20, R.M. 140.1, S/31N/02W/11/BBC
MAR .10 -.00 -.00 -.oo -.oo -.oo -.oo -.oo
APR • 20 ;..,oo -.00 -.oo -.oo -.00 -.oo -.oo
E JUN .30 o.oo o.oo -.oo -.oo -.oo -.oo -.oo
E JUL .10 o.oo -.oo -.oo o.oo -.oo -.oo -.oo
L JUL .10 o.oo o.oo -.oo -.oo -.oo -.00 -.oo
L AUG .30 .30 -.00 -.00 -.oo -.oo -.oo -.oo
E SEP .40 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
L SEP • 20 o.oo -.oo -.oo -.oo -.oo -.oo -.oo
Values• -.00 indicate no sample taken
Appendix Tfble EB.10 Catch per unit effort lower Susitna River habitat locations, 1980-1981, for
cottids.
I MINNOW TRP TROT LINE
SAMPLE (CTCH/TRP) (CTCH/LNE)
Mainstem Susitna -Island 8 R.M.
E JUN .10 o.oo
E JUL .10 o.oo
L JUL .10 o.oo
GILL NET HOOK&LlNE
(CTCH/24H) (CTCH/HR)
146.9~ S/32N/01W/27/DBC
o.oo -.oo o.oo -.oo o.oo -.oo
Portage Creek, R.M • 148.8, S/32N/01W/25/CDB
E JUN • 10 o.oo 0.00 -.oo
E JUL .10 0.00 o.oo o.oo
L SEP .10 0.00 o.oo o.oo
Values• -.00 indicate no sample taken
BEACH SN
(CTCH/TME)
-.00 -.oo
-.oo
-.oo o.oo -.oo
ELECTRO
(CTCH/HR)
-.oo -.oo
-.00
o.oo -.oo o.oo
GILL DRFT
(CTCH/DRF)
-.oo -.oo
-.oo
o.oo -.oo o.oo
DIP NET
(CTCH)
-.oo -.oo
-.oo
-.oo -.oo -.oo
Appendix Table EB.11 Catch per unit effort lower Susitna River habitat locations, 1980-1961, f6.i
Arctic lamprey.
SAMPLE
MINNOW TRP TROT LINE
(CTCH/TRP) (CTCH/LNE)
GILL NET HOOK&LINE
(CTCH/24H) (CTCH/HR)
BEACH SN
(CTCH/TME)
Alexander Creek Site A, R.M. 10.1, T.R.M. 0.0, S/15N/07W/06/DCA
EJUN .20 0.00 o.oo -.00 -.00
Alexander Creek Site B, R.M. 10.1, T.R.M. 2.0, S/16N/07W/32/CCB
E SEP .20 o.oo o.oo 0.00 -.00
Alexander ·Creek Site C, R.M. 10.1, T.R.M. 4.0, S/16N/07W/30/ACD
E SEP .10 0.00 0.00 -.00 0.00
Ander~on Creek, R.M. 23.8, S/17N/07W/29/DDD
E JUL .10 0.00 0.00 -.00 -.oo
Values= -.00 indicate no sample taken
. ELECTRO
(CTCH/HR)
-.oo
-.00
-.00
-.00
GILL DRFT
(CTCH/DRF)
-.00
-.00
-.oo
-.oo
Dit NET .
(CTCH)
··'-:-;on.
...~()0
. () .Qp.
..:.:,~QO
~ " Appendix Table EB.11 Catch per unit effort lower Susitna River habitat locations, 1980-1981, ~ frir
Arctic lamprey.
MINNOW TRP TROT LINE GILL NET HOOK&LINE BEACH SN ELECTRO
SAMPLE (CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR) (CTCH/TME) (CTCH/HR)
Mainstem Slough, R.M. 31.0, S/17N/06W/05/CAB
E JUL .10 0.00 0.00 -.00 -.00 -.00
Mid-Kroto Slough, R.M. 36.3, S/18N/06W/16/BBC
E AUG .10 0.00 0.00 -.00 0.00 -.oo
Deshka River Site A, R.M. 40.6, T.R.M. 0.0, S/19N/06W/35/BDA
E SEP .10 0.00 0.00 -.00 0.00 -.00
Deshka River Site B, R.M. 40.6, T.R.M. 1.0. S/19N/06W/26/BCB
I
E SEP .10 0.00 0.00 0.00 -.00 -.00
Values= -.00 indicate no sample taken
GILL DRFT
(CTCH/DRF)
-.oo
0.00
-.00
0.00
our NET
. (CTCH)
·..;:·.oo
:...oo
.~.-'.00.
~.oo
Appendix Table EB.ll Catch per unit effort lower Susitna River habitat locations, 1980-1981, ~or
Arctic lamprey.
SAMPLE
MINNOW TRP TROT LINE GILL NET BOOK&LINE
{CTCH/TRP) (CTCB/LNE) {CTCH/24H) {CTCB/HR)
BEACH SN ELECTRO
{CTCH/TME) {CTCH/HR)
Deshka River Site C, R.M. 40.6, T.R.M. 3.5, S/19N/06W/14/BCA
L JUL .10 0.00 o.oo -.00 -.oo -.00
Little Willow Creek, R.M. so.s·, S/20N/05W/27/AAD
L AUG .10 o.oo o.oo o.oo -.00 -.00
E SEP .40 o.oo -.00 -.00 -.00 -.00
Rustic Wilderness, R.M. 58.1 f S/21N/05W/25/CBD
JAN .10 o.oo -.00 -.00 -.00 -.00
Goose Creek 1, R.M. 72.0 1 S/23N/04W/31/BBC
E JUL .10 o.oo o.oo o.oo o.oo 0.00
L AUG .10 o.oo -.00 -.oo -.00 -.00
L SEP .10 0.00 0.00 -.00 -.oo o.oo
Values= -.00 indicate no sample taken
GILL DRFT DIP'HET
{CTCH/DRF) (CTCH)
-.00 ·'-,oo.
o.oo ·:-·;oo
-.oo ~ .• ao
-.oo ~·.00
o.oo .:. •. oo
-.oo .~~00 o.oo ·:-.o·o_.
-·-.-·
Appendix Table EB.ll Catch per unit effort lower Susitna River habitat locations. 1980-1981,. fO-r
Arctic lamprey.
SAMPLE
Montana
L JUN
L JUL
L AUG
Whiskers
E JUL
L AiJG
MINNOW TRP TROT LINE GILL NET HOOK&LINE
(CTCH/TRP) (CTCH/LNE) (CTCH/24H) (CTCH/HR)
Creek. R.M. 11.0. S/23N/04W/07/ABA
.10 o.oo o.oo 0.00
.10 0.00 -.00 -.oo
.20 0.00 -.00 -.oo
Creek, R.M. 101.4, S/26N/05W/03/AAC
.50 0.00 0.00 o.oo
.10 0.00 -.00 -.00
Values= -.00 indicate no sample taken
BEACH SN ELECTRO GILL DRFT DlP:)iET
(CTCH/TME) (CTCH/HR) (CTCH/DRF) (C'fCH)
-.oo 0.00 -.oo o .• oo
-.00 -.00 -.00 .;. •. 90
-.00 -.00 -.oo ":"".·~ 0(}
-.00 0.00 o.oo ;.:. ... PO
-.00 -.oo -.00 --:;00.