a
l*
4
i'"i
lar
S
o'
o
o
Oregoncoastal
coastal salmon
salmonspawning
spawning
Oregon
surveys
surveysand
and
private hatchery
straying of
of private
hatcherycoho
straying
cohosalmon
salmonfrom
from
Y a q uinaand
Yaquina
andCoos
Coosbays,
bays,1984.
1984.
o
S
o
[J
A l a n M.
Alan
M . McGie
McGie
o
o
0 re g o nDepartment
D e par tm ent
Oregon
of
Fish and
of Fish
andWildlife
t,tildlife
Researchand
andDevelopment
Development
Research
Section
Section
Charleston,
Charleston, Oregon
Oregon97420
97420
o
fl
November
November
1985
1985
o
S
*
{-ri*
4
Ot
CONTENTS
CONTENTS
Page
Page
O
a
o
INTRODUCTION
............................................
INTRODUCTION.
1
METHODS.
METHODS
..............................................................
2
RESULTS.
RESULTS
.............................................................
Coho
Salmon ...................................................
CohoSTmiSfrT
P e a kc o u n t...............................................
Peakcounts
s...
Total escaFbment
escapement (AUC).
(AUC) ......................................
tffif
..
versus wild
w i l dstreams
s t r e a m...................
s....
fHatchery-influenced
fisus
Escapement into Tenmile lakes .............................
Chum Salmon ................................
TillamookBay .............................................
Peakcounts
e a k c o u n t..........................................
s....
a
o
o
9
9
9
9
9
11
11
11
11
14
L4
14
14
16
16
16
16
16
16
16
16
16
16
10
10
22
22
22
22
Trap counts
Trap
counts..........................................
NestuEEl-JfiIffi
Nestucca
River .............................................
HatchEFl:TiI6l5ffi6'n
HatcheryCohoSalmonStrays
....................................
Strays
.....
Coded-wire-tagrecoveries .................................
Coded-wire-!39_lgggveries
.....
Distribution ................................................................. 23
DiTtFi-6uffin
23
24
SalmonRiverHatchery
24
Samon
Rffi Hatchery.
.....................................
Number
of
spawning
adults
25
25
.................................
ffilts
Y a q u i n aBay
25
Yaguina
B a y........................................... 25
26
26
CoosBry.
CoosBay
..............................................
D I S C U S S ION
.
DISCUSSION
..........................................................
26
26
REFERENCES.
REFERENCES
..........................................................
31
31
APPENDICES
A P P E N D I..........................................................
CES.
33
33
o
o
2
S
p a w n i nFgi s h Surveys
SpawningFish
S u r v e y s...........................................
2
,. ...
.... o..
H
a t c h e r Fish
yF i s hStrays
Hatchery
S t r a y s.............................................
. . . . .. . . . . . . .
6
!....
....
S c a l ea n a yl s i s..............................
Scaleanalysis
6
Spawning
Ttock-Size.
Spawning
Stock Size .....
6
......
St
r a yi n gRate
R a te......................................................
.
Straying
9
F aall
' l l CChinook
F
h i n o o kSSalmon
a l m o n.............................................
...
.....
P
e a kc o u n t................................................
Peakcounts
s...
.....
o
1
i
o!
INTRODUCTION
INTRODUCTION
.
o
Spawning
sa'lmon
havebeen
beencounted
Spawning
salmon
have
countedin
in coastal
coastal streams
1950to
streamssince
to assess
since1950
assess
t h e status
the
stocks.
s t a t us of
n a tu ra l spawning
o f natural
pr im ar ily established
sp a w n i ng
The surveys
stocks. The
sur veyswere
wer eprimarily
establ i s hed
o
determineescapement
to determine
escapement
past commercial
to
of
past
net
of wild
wild salmon
sa'lmon
commercial
net fisheries
fisheries operating
operating
in
large river
in several
several large
river systems.
systems. When
Whencommercial
corunercialnet
net fisheries
fisheries were
wereclosed
closedin
in
1
9 5 7 , the
t h e surveys
su rve yswere
re ta i n edto
w e reretained
1957,
to determine
deter mineescapement
trends
escapem ent
tr endsas
asocean
oceantroll
trol l
o
a n d sport
and
s p o r t fisheries
fi sh e ri e s developed.
d e ve l o p e d.
T h e spawning
pr ogr amhas
sp a w n i n g
sa l mo nsurvey
su rveyprogram
The
salmon
efforts
has evolved
evolvedthrough
thr oughsuccessive
successiveeffor
ts
a rs--p ri ma ri l y to
o v e r the
t h e ye
to reduce
reducethe
the number
over
years--primarily
consolidate data
data
num berof surveys,
sur veys,consolidate
o
f r o m aa variety
p r o v i d evaluable
v a r i e t y of
d r a ' i n a g e sand
o f drainages,
from
onn trends
a, n dstill
s t i l l provide
v a l u a b l edata
datao
t r e n d s at
at
m
i n i m a lexpense.
pr im ar yinformation
minimal
F ro m1950
exp e n se . From
1 9 5 0to
to 1974,
1974,the
the primary
infor m ationon
tr endswas
on trends
was
o b t a i n e dby
( Ber r y1975).
b y the
th e Fish
F i sh Commission
obtained
of
(Berry
C o n n mi s sion
of Oregon
Or egon
1975) . In
In 1976,
L976,following
following
o
m e r g e rof
o f the
th e Fish
F i sh Commission
C o rmi ssi o nand
merger
into
a
and Wildlife
l.|ildlife Commission
Conr nission'
into
a unified
unified agency
agenc yin
in
p ro g ra mwas
L
9 7 5 , the
t h e program
( Cunm ings
w a sintensively
1975,
(Cummings
1977).
i n te n si v e' lyreviewed
r eviewedand
andstandardized
standar dized
197 7) .
Escapement
indexesdeveloped
developedby
Escapement
indexes
Oregon Department
of Fish
Fish and
Wildlife
by the
the 0regon
Department
and l,|ildlife
a
providing aa breadth
were derived
derived from
limited surveys
from limited
were
between
surveysproviding
breadth of coverage
coveragebetween
c o a s t a l drainages
dra i n a g e sat
a t the
th e e
coastal
expense
xp e nseof in-depth
in- depth coverage
cover agewithin any
single
any single
drainage.
d r a in a g e .
a
(1 980)evaluated
B e i dl e r and
N i cke l so n(1980)
a n dNickelson
Beidler
the surveying
evaluatedthe
sur veyingeffort
effor t for coho
coho
prior to
(1) the
salmon
salmonprior
to 1981.
1981. They
Theyrecommended
recommended
that
that (1)
the standard
standardindex
index be
be
( ar eas) , (2)
( 2) the peak
e x p a n d ed
l e a st 4
expanded
to
to at
400 survey
su rve yunits (areas),
peak count
count be
be rreplaced
a t least
ep' la c ed
o
w
i t h estimates
e s t ima te so
th e number
n u mb eof
r spawners
with
off the
of
spawner in
s' inthe index
index of
index unit as
an index
as an
(3) separate
escapement,
and (3)
indexesbe
escapement,
and
separate indexes
be establ'ished
established for
for streams
streams influenced
by
influenced by
hatchery
hatchery fish.
fish.
a
recommendations
The recommendations
The
were
first adopted
were first
adoptedin
in 1981
1981.for
for coho
coho
p re ve ntedaa similar
salmon.
s a l m o n . Lack
L a ckof
fu n d s prevented
o f funds
in
impr ovem ent
for fall
similar improvement
in surveys
fal1
sur veysfor
c h i n o o kand
chinook
an dchum
ch u msalmon
sa l mo nin
i n coastal
co astal watersheds.
water sheds.
o
--11-
A
d di ti o n a l sampling
the Yaquina
YaquinaRiver
Additional
in
sa mp l i n gwas
w a sconducted
conducted
in the
River and
andat
at Salmon
Salm on
pr i' v ate
R i v e r Hatchery
H a tch e ryand
a n din
i n tributaries
tri b u ta ries of
Bayto
River
straying
CoosBay
to document
document
of Coos
str ayingof
of private
(OAF)facility
hatchery coho
(OAF)
hatchery
salmonfrom
from the
the Oregon
0regonAqua-Foods
cohosalmon
Aqua-Foods
facility at
SouthBeach,
Beach,
at South
Y a q u i n aBay,
Ba y, and
A n a d ro mo uInc.,
Inc.,
s,
Yaquina
facility
a n dAnadromous,
facility on
Nor thSpit,
The
on North
Bay. The
Spit, Coos
CoosBay.
programwas
partially supported
private hatchery
programwas
program
waspartially
hatcheryfunds.
supportedwith
with private
funds. The
Theprogram
v{as
public on
conducted
conductedin
in response
responseto
to concerns
and
concernsby
by fisheries
fisheries managers
managers
the public
onthe
the
andthe
p o s s i b l elong-term
l o n g -te rmeffects
possible
e ffe cts of
o f interbreeding
inter br eedingwild
andstray
hatcher ystocks
stocksin
in
wild and
str ay hatchery
d i s t r i c t streams.
district
Ore g o nAqua-Foods
A q u a- Foods
released
stre a ms. Oregon
r eleased"zero-aged"
or accelerated
acceler ated
"zer o- aged"or
year ling smolts.
A n a d ro mo released
u
resleasedyearling
smolts;
s m o l t s ; whereas,
w h e re a s,Anadromous
ar e
sm o' lts. Although
Althoughsmolts
sm oltsare
p ri vate hatchery
n o r m a l l yliberated
normally
l i b e ra te d at
th e private
hatcher yfacilities,
facilities, OAF
OAFbarged
a t the
bar gedexperimental
exper im ental
groups
releasedthem
groups and
and released
themoffshore
in 1983.
1983.
offshore in
METHODS
METHODS
.1
Spawning
Fish
Sp a w n i ng
F i sh Surveys
S u rve ys
D i stri ct fisheries
fi sh e ri e s biologists
r esponsiblefor
for surveying
District
index
b i o 'l o gistswere
sur vey' ing
index
wer eresponsible
respectivedistricts.
distr icts.
sstreams
t r e a m sestablished
esta b l i sh e din
i n their
th e i r respective
They
Theywere
by
wer eassisted
assistedby
p e rso n n ehired
Fall
al l
ttemporary
e m p o r a rypersonnel
hl i re d to
for coho
to conduct
conductintensive
intensivesurveys
sur veysfor
cohosalmon.
salm on. F
Coho
1985. Coho
chinook salmon
chinook
between15
15 October
October1984
1984and
and28
28 January
January1985.
salmonwere
were counted
countedbetween
salmon
salmon
were counted
salmonv{ere
between15
1.5October
0ctober 1984
March1985.
1985. Chum
Chum
salmon
countedbetween
1984and
and55 March
Pre-establishedindex
index
1984. Pre-established
were
1984.
werecounted
countedbetween
between29
29 October
Octoberand
and17
17 December
December
countsof
of
streams
were repeatedly
season
streamswere
repeatedlysampled
during the
the spawning
to obtain
obtain counts
sampledduring
spawning
seasonto
jacks (age
( age2)
fr omadults
adul ts
live
l i v e and
a n ddead
d e a dsalmon.
2) were
wer ekept
kept separate
sa l mo n . Counts
C o u n tsof
of jacks
separ atefrom
( > a g e3).
(>age
3).
The
T h e standard
for coho
coho salmon
salmon included
included48
48 str
streams,
totaling
i n d e x area
eams,totaling
sta n d a rdindex
a re a for
( T a b l e1).
53.0
5 3 . 0 miles
m i l e s (Table
1).
g r o u p sbased
The
i n t o two
t w o groups
based
T h eindex
' i n d e xstreams
a r e stratified
s t r a t i f i e d into
s t r e a m sare
--22-
o
Table 1.
1. Standard
Table
Standardspawning
spawningsurveys
surveys for
for coho
cohosalmon
salmonin
in Oregon
0resoncoastal
coastal
w a t e r s h e dstratified
s t r a t i f i e d into
watersheds
i n t o hatchery-influenced
hatchery-influenced
a n dw
and
wild
i l d fish
f i i h spawning
spawning
units.
units.
o
River system
River
system
Index stream
stream
Index
Mileage
Hileage
Hatchery-infI uencedsurveys
Hatchery-influenced
surveys
o
Necanicum
Necanicum
R.
R.
K
i l c h i s R.
Kilchis
R.
Wilson
l{i I son R.
R.
T i l l a m o o kR.
R.
Tillamook
NestuccaR.
Mestucca
R.
S i l e t z R.
R.
Siletz
Y a q u i n aR.
R.
Yaquina
o
( F i v e Rivers)
A
l s e aR.
Alsea
R . (Five
Rivers)
S
m i t hR.
Smith
R.
o
Coos Bay
Coos
Bay
R.
M i l l i c o m aR.
Millicoma
Fk. Coos
South
CoosR.
R.
South Fk.
R.
C o q u i l l eR.
Coquille
North Fork
Fork
North
Upper
Necanicum
Upper Necanicum
Sans
DounsCr.
Sams Downs
Cr.
Cedar
Cedar Cr.
Cr" acl
U p p e rDevil's
D e v i l ' s Lake
L a k eFork
Fork
Upper
Sin,nons
SinnonsCr.
Cr.
Clear
C l e a r Cr.
Cr. a
Bear
B e a rCr.
Cr.
Gravel
G r a v e lCr.
Cr.
F o u r t hof
Fourth
o f July
J u l y Cr.
Cr.
Salmon
SalmonCr.
Cr.
UpperYaquina
Upper
Yaquina R. c
a
Lobster Cr. a
Lobster
a
CherryCr.
Cherry
Cr.
l{i I sonCr.
Wilson
Cr.
Buck
B
u c kCr.
Cr.
BeaverCr. a
Beaver
Little
L i t t l e South
S o u t hFork
Fork
L a r s o nCr.
C r . aa
Larson
M a r l o wCr.
Cr.
Marlow
O a n i e l sCr.
Daniels
Cr.
1
.5
1.5
1
.0
1.0
2"9
2.9
0.5
0.5
0.6
0,6
0.8
0.8
0
.8
0.8
1.0
1.0
0.8
0.8
0.6
0.6
2.0
2.0
1.3
1.3
0.8
0.8
1
.3
1.3
3
.5
3.5
1.5
1.5
1.0
1.0
1.3
1.3
1
.0
1.0
0.8
0.8
North Fork
North
Fork
Cherry
CherryCr.
Cr.
Alder
A l d e r Cr.
Cr.
1.0
1.0
Subtotal
Subtotal
o
Little
R.
L i t t l e Nestucca
Nestucca
R.
Drift
D
r i f t Cr.
Cr.
-
Beaver
BeaverCr.
Cr.
Y a c h a t sR.
Yachats
R.
o
Siuslaw
S i u s l a wR.,
R . , mainstem
mainstem
North
North Fork
Fork
Lake
LakeCr.
Cr.
Umpqua
R.
Uinpqua
R.
o
28.8
28.8
l { i l { fish
Wild
f i s h surveys
surveys
Elk
E
l k Cr.
Cr.
Nehalern
Nehalem R.
R.
o
1.8
1.8
1.0
i9.
South Fork
South
Fork
Cow
CowCr.
Cr.
Coquille
C
o g u i ' l l eR.
R.
East Fork
East
Fork
t'liddle Fork
Middle
Fork I
South Fork
South
Fork
West
I'lest Fork
Fork
N.F.
N . F . Cronin
C r o n i nCr.
Cr.
Humbug
W. Humbug
Cr.
l{.
Cr.
Hamilton
H
a m i l t o nCr.
Cr.
RanchCr.
Oak
OakRanch
Cr.
N.F.
Cr.
N . F . !Wolf
{olf C
r . aa
Bear
B e a rCr.
Cr.
H o r s eCr.
Horse
Cr.
Nettle
N
e t t l e Cr.
Cr.
N.F.
N . F . Beaver
B e a v e Cr.
rC r .
Williamson
l l i l l i a m s o n Cr.
Cr.
School
SchoolFork
Fork
Dogwood
Cr.
Oogwood
Cr.
Doe
O o eCr.
Cr.
Billie
E
i l l i e Cr.
Cr.
Rogers
RogersCr.
Cr.
Misery
t'|iseryCr.
Cr.
Panther
P a n t h e rCr.
C r . aa
Schofield
S c h o f i e l dCr.
C r . aa
Dean
D e a nCr.
Cr.
North Myrtle
North
Myrtle Cr.
Cr.
Quines
Cr.
Q u i n e sCr.
0.5
0.5
0.5
0.5
1.0
1.0
1.0
1.0
1.0
1.0
Steel
Cr.
a
Steel C
r. a
Slater
5 l a t e r Cr.
Cr.
1.0
1,.0
0.5
0.5
1.0
1.0
Salmon
Cr.
Salmon
Cr.
1.1
1.1
0.8
0.8
1.0
1
.0
0.8
0.8
1.0
1.0
1.3
1.3
0.5
0.5
1.0
1.0
0.5
0.5
1.3
1.3
1.3
1.3
0.8
0.8
0.8
0.8
2.0
2.0
1.5
1.5
1.0
1.0
1.0
1.0
Subtotal
Subtotal
24.2
24.2
Total Index
Index
Total
53.0
53.0
--------------------------aStandatd. øpawning
apaning fish
eurveg streams
astandard
stre@B formerly
0D3llindex
ittdea
conpriei,ng the
the ODFW
fi,sh Survey
fornerly oomprising
area, 1950-80.
7950-80.
o
- 3-3-
p o te n ti a 'linfluence
gr oupof
on
t h e potential
o n the
i n fl u e n ceof
hatcher yfish
fish on
the counts.
o f hatchery
on the
counts. One
Onegroup
of
surveys
light to
s u r v e y scontained
th o ughtto
to have
havelight
to heavy
heavyhatchery
hatcher yinfluences;
influenc es ;
co n ta i n e dstreams
stre a msthought
pr im ar ily contained
g ro u pof
otal
Total
w h e r e a s,the
containedwild
whereas,
th e second
str eamsprimarily
wild spawners.
spawner s.T
se co n dgroup
o f streams
survey distances
for hatchery-influenced
hatchery-'influenced
wild
survey
and
distanceswere
28.8 and
24.2 miles
niles for
andwild
were 28.8
and24.2
stocks, respectively.
stocks,
respectively. The
The standard
for fall
fa'll chinook
salmon
standardindex
index area
area for
chinooksalmon
c o n t a i n e d12
Thechum
chumsalmon
indexarea
ar eawas
was
contained
1 2 streams
stre a mstotaling
to ta l i n g 11.0
11.0 miles.
m iles. The
salmonindex
comprised
c o m p r i se of
do f
mile
Tillam ookBay
0.8 mile
seven
totaling 4.3
4.3 miles
m iles in
in Tillamook
Bayand
and0.8
se ve nstreams
stre a mstotaling
iin
n C
l e a r Creek,
Clear
C r e e k ,Nestucca
N e s t u c cRiver.
R
a iver.
p e a kfish/mile
om the
the
Average
was calculated
from
Av era g epeak
fi sh /mi l e in
i n the
the index
calculatedfr
index streams
str eam swas
f o l l o w i ngrelationship:
following
re 'ta ti o n sh i p :
n
n
t
E
(1)
(1)
F/14
E/M
==
ii==1 c i c;
nm'
1
where,
where,
-L
L
E
i
n ==1
l
per mile
F/M
F /M== average
fish per
m ile
a ve ra g efish
p€dkcount
in index
index stream
c2 == peak
count in
streamirl
n z == mileage
mi l e a g esurveyed
in index
index stream
str eamii
sur veyedin
rn
n
n == number
numberof
of streams
streamssurveyed
surveyed
jacks and
p e a kfish/mile
S e p a r a t eaverage
for jacks
Separate
for
fi sh /mi l e estimates
made
andadults.
adults.
a ve ra g epeak
estim ateswere
wer emade
peakcounts
Prior to
number
of jacks
Prior
number
of
the combined
comb'ined
and
to 1981,
1981,peak
fromthe
countswere
wereobtained
obtainedfrom
iacks and
a
d u l t s observed
adults
o b se rve din
i n the
th e index
i n d e xunits.
units.
was
The total
the index
The
in the
indexstream
strean was
total number
numberof spawning
spawningcoho
cohosalmon
salmonin
( Beidler and
( AUC)techniques
s on
estimated
curve
techniques (Beidler
and Nickel
Nickelson
e s t i m a t e dusing
u si n g area-under-the
a re a -u n d e r-the
cur
ve (AUC)
1 9 8 0 ) ,expressed
1980),
fi sh /mi l e .
e xp re sseas
da s fish/mile.
fol' lowing
This
der ivedfrom
fr om the
the following
index was
wasderived
This index
relationship:
relationship:
- 4-4-
o.
I
((2)
2)
o
^n
N
[ t l ==
n
z
t
iz-=
= 1L
t/11 3
Tit;lll.3
where,
wher e,
ilN == total
total estimated
numberof
spawning
estimatednumber
of spawning
fish
fi sh
o
ei
per iod
= mean
t h ez.th
meancount
countin
i n the
ith period
iod
t
t.i,
numberof
= number
period
of days
daysin
in the
the'vth
ith per
o
An average
An
3 days
to
averagespawning
spawninglife
life of 11
11.3
to apply
apply for
for coho
days was
wasassumed
assumed
cohosalmon
salmon
( Beidler and
s p a w n i ng
i n the
th e index
T he
spawning
in
i n d e xstreams
andNickelson
Nickelson1980,
1980;Willis
l.|i' llis 1954)
stre a ms(Beidler
1954) . The
AUC
AU Cestimates
to avoid
avoid using
wher e
e s t i ma te swere
w e rebased
b a se don
sever al stipulations
using streams
str eam swhere
o n several
stipulations to
o
p o i n ts were
par ts of
few
wereemisse
missed d.
f e w data
d a t a points
of the
the run
r un wer
w e reavailable
a va i l a b l e or significant parts
(1 ) at
pr ior to
These
T h e s ecriteria
m adeprior
to or
16
c r ite ri a were:
w e re : (1)
l east one
or on
on 16
a t least
one survey
sur veywas
wasmade
(2
( 3) at least
November,
was acceptable,
was
N o v e m be(2)
r; ) water
least one
w a te r visibility
vi si b i l i ty was
acceptable;(3)
one survey
sur veywas
o
(4) successive
L0 or
days
made
madeon
were 10
or fewer
fewer days
on or
or after
after 88 January,
January;and
and (4)
successivesurveys
surveyswere
apart
apart.
However,tv{o
However,
two surveys
between 10
20 days
days apart
were allowed
allowed before
before
L0 and
and 20
apart were
surveysbetween
the first
fir st or
last count
in the
the
AUCestimates
or last
countin
the
t h e survey
w a sdiscarded
d i sca rd e dfor
estimates. If
If the
s u r ve ywas
fo r AUC
o
'indexarea
to occur
index
was other
to
area was
assumed
days
other than
than zero,
zero count
count was
wasassumed
occur77 days
zero, aa zero
before or
before
or after
after the
the actual
count.
actual count.
All surveys
meet these
did not
not meet
these
Al1
surveysthat did
criteria
index.
c r i t e r i a were
w e reeliminated
the AUC
AUC
index.
e l i mi n a te dfrom
fro mthe
o
The
survey
individual streams,
T
h e results
re su l ts of
in individual
str eam s,
o f the
th e spawning
sur veyeffort
effor t in
sp a w ning
pr esentedin
in appendixes
stratified
b y fishery
fi sh e ry districts
r iver basins,
basins, are
ar e presented
appendi x es
s t r a t i f i e d by
d i stri cts and
and river
r espectively. The
The
A,
a ndCC for
fo r fall
fa l l chinook,
coho, and
and chum
chumsalmon,
A , B,
B, and
ch i n o o k,coho,
salmon,respectively
o
during the
the 1984-85
1984-85
appendixes
during
from surveys
sumnarizeall
data from
surveyscompleted
completed
appendixessummarize
all data
distr ict biologists
biologis ts
by district
season
surveyed
by
i n cl u d i n g nonstandard
units
sur veyed
se a so nincluding
n o nstandarunits
d
sspawning
p a w n ' i ng
studies.
and
Research
and
biologists
D e ve l o p meSection
Section
nt
biologists for
for other
other studies
e s e a rch
a n dDevelopment
a
n dR
o
--55-
HatcheryFish
Hatchery
Fish Strays
Strays
T
w e n ty-e i g ha
t d d i ti o n a l str
Twenty-eight
additional
streams
weree intensively
intensively sur
surveyed
for hatcher
hatcheryy
eam swer
veyedfor
fish
YaquinaRiver
strays in
in the
the Yaquina
fish strays
the
River to
the two
two standard
to augment
augment
standardindex
indexstreams
streams
(Table2).
(Table
2).
groupedinto
Thestreams
geographicalareas
four broad
The
streamswere
v{eregrouped
into four
broadgeographical
for
areasfor
analysis.
analysis.
the Coos
In the
CoosBay
Bay watershed,
In
22 additional
watershed,22
additional streams
streamswere
monitored
weremonitored
b e s i d e sthe
th e 33 standard
i n d e xstreams.
besides
sta n d a rdindex
gr oupedinto
Thesurveys
str eam s. The
sur veyswere
wer egrouped
into three
thr e e
g e o g r a ph i caareas
( Table3).
al re a ssimilar
si mi l a r to
to surveys
sur veysat
YaquinaBay
geographical
Bay(Table
at Yaquina
3) ,
Carcassesof
of spawned-out
spawned-out
Carcasses
coho
in
salmonencountered
encountered
cohosalmon
in the
the surveys
were
surveyswere
' indicating
possiblecoded-wire-tagged
i n s p e c t edfor
fo r adipose
fi n marks
a d i p o sefin
inspected
fish
ma r ksindicating possible
coded- wir e- tagged
fish and
and
scale
sampleswere
taken from
from the
the key
scale samples
were taken
key scale
to analyze
ana'lyzerearing
scale area
area to
rearing history
history
( N i c h o l asand
(Nicholas
V a nDyke
D yke1982).
a n dVan
1 9 8 2 ). Sex,
length,
Sex, MEPS
M EPS
length, location,
location, and
datewere
wer e
anddate
r e c o r d e dfor
recorded
fo r each
fi sh sampled.
e a chfish
sa mp l ed.
pub'licand
Hatcherycoho
cohosalmon
Hatchery
for
salmonwere
wereexamined
for coded-wire
examined
coded-wiretags
tags at
and
at public
p r i v a t e hatchery
private
ha tch e ryfacilities.
fa ci l i ti e s.
Representative
scale
weree obtained
obtained from
Repr esentative
f r om
scale samples
sam pleswer
u n m a r k ed
unmarked
adults
River
a d u l ts at
a t Salmon
S a l mo n
R i ver Hatchery
Hatcher yfor
for life
life history
histor y analysis.
analysis.
Scale
S c a l eanalysis
analysis
A
A trained
t ra i n e d reader
re a d e re
examined
and
subjectively assigned
classifications tto
xa mi n ed
and subjectively
assignedclassifications
o
sscale
c a l e collections
fro m Salmon,
Yaquina,
c ol l e cti o n s from
S a 'l mon,
r iver s.
Yaquina,and
andCoos
Coosrivers.
The scales
The
scaleswere
wer e
( smo]tsreleased
a rl i [9", "hatchery
cclassified
l a s s i f i e d as
yearling",
(smolts
a s "hatchery
acce' ler ated"
r elease din
in
" h a tch e ryye
"hatcher yaccelerated"
e a r of
ttheir
h e i r first
f i r s t yyear
l i f e from
o f life
f r o mOAF
a n d"wild".
O A Ffacilities),
f a c i I i t i e s ) , and
"wild".
Spawning
Stock
S p a w n i ng
S i ze
S to ckSize
The
total number
numberof
The total
hatchery and
coho salmon
salmon spawning
spawning in
of hatchery
in the
and wild adult coho
ri ve rs was
r e' tationship:
Yaquina
Ya q u i n aand
a n dCoos
C o o srivers
fr omthe
the relationship:
w a sestimated
e s tim atedfrom
-6-6-
o
o
T a b l e2.
Table
2 . Tributaries
T ri b u ta ri e s surveyed
su rve yedfor
for . stray
str ay coho
cohosalmon
YaquinaBay
salm onin
in the
the Vaquina
Bay
w a t e r s h e d1984.
,1984.
watershed,
Ar
ea
Area
Tr ibutar y
Tributary
I Tributaries
T r i bu ta ri e s of
Y a q u i n aBay
o f Yaquina
I
B ay
BeaverCreek
Beaver
Creek
Mi
1I Creek
Mill
Creek
0 l a l l a Creek
Creek
Olalla
l'{right
Wright Creek
Creek
o
II T
r i b u ta ri e s of
II
Tributaries
o f th
e lower
l o w e r Yaquina
Yaquinaand
the
andlower
lower
B i g Elk
E l k Creek
Creek
Big
o
o
III T
r i b u t a r i e sof
III
Tributaries
t h e upper
Yaquina
o f the
u p p e rYaquina
River
River
o
IIV
VT
r i b u ta ri e s of
Tributaries
upper
p p e rBig
B i g Elk
of u
Elk Creek
Cr eek
o
o
asbmdald
aStandd spc&ming
spa,ming fish
suruege.
fish surveys.
o
o
-7-
-7.-
Bear
BearCreek
Creek
( 2)
Cr eek(2)
Bear
BearCreek
BeaverCreek
Beaver
Creek
Cook
CookCreek
Creek
DeerCreek
Deer
Creek
Devils Well
} r lel' Creek
lCr eek
Devils
HayesCreek
Creek
Hayes
KlamathCreek
Cr eek
Kiamath
DeerCreek
Little Deer
Little
Cr eek
Simpson
Creek
Simpson
Creek
ThorntonCreek
Creek
Thornton
B a l e sCreek
Creek
Bales
Butter mlk
i Creek
Cr eek
Buttermilk
Creek aa
Salmon
Sa'lmonCreek
StonyCreek
Creek
Stony
YaquinaRive
Upper
Riverr a
a
UpperYaquina
Big
E l k Creek
B i g Elk
Creek
Feagles
Feag'lesCreek
Creek
Gr antCreek
Grant
Cr eek
JohnsonCreek
Creek
Johnson
Rail Canyon
Rail
CanyonCreek
Creek
SavageCreek
Creek
Savage
Spout
Creek
SpoutCreek
Sugarbowl
SugarbowlCreek
Creek
Wildcat
Hildcat Creek
Cr eek
Wolf
t,lolf Creek
Creek
T
a b l e3.
Table
3. T
r i b u t a r i e ssurveyed
Tributaries
surveyedfor
for stray
cohosalmon
stray coho
salmonin
in the
the Coos
CoosBay
Bay
w
a t e r s h e d1984.
,1984.
watershed,
Area
Ar e a
I
Stream
Stream
Dan' ielsCr
Daniels
Creek
a
eeko
Davis
Davis Creek
Cr eek
Deton
Deton Creek
Creek
a
Larson Creek
Creek a
Larson
Mettman
Creek
Mettman
Creek
Nor
th Slough
North
Slough Cr
Creek
eek
Pa]ouseCreek
Palouse
Cr eek
i,|il'lanchCreek
Willanch
Creek
Wilson
l,liI son Creek
Creek
Tidewater
T i d e w a te r
II M
II
Millicoma
i l l i c o m aRiver
River
S
Deer
DeerCreek
Creek
Marlow
Creek
a
M
ar lowCr
eeka
Little Matson
M atsonCreek
Little
Cr eek
PantherCreek
Panther
Creek
Totten Creek
Totten
Creek
Upper
WestFork
Upper West
Fork
V
a u g h Mill
n i l l Creek
M
Vaughn
Creek
I I I South
III
S o u thFork
F o rkCoos
C o o sRiver
R i ve r
Beaver
Beaver Slide
Slide Creek
Cr eek
Big Creek
Big
Cr eek
Bottom Creek
Bottom
Creek
Buck creek
Buck
creek
Burnt
Burnt Creek
Creek
CedarCreek
Cedar
Creek
Hog
HogRanch
RanchCreek
Creek
Tioga
TiogaCreek
Cr eek
8R
8R Creek
Creek
a Stmd.and
a
Standard 8paWning
spa'mdng fish
sumseys.
fish surveys.
i
S
S
-8-8-
o
^n
n
N
h w== t _ ((M/mj)N
Nhw
ll/n;)Ni
i=1
(3)
(3)
o
where,
where,
= total
(h)
Nhw =
total number
from
numberof
spawners
of spawners
fromhatchery
hatchery(h)
Nhw
( w ) stocks
and
wild
a n dw
i l d (w)
stocks
M
M == total
habitat
to tal miles
miles of
habitat in
the
of spawning
spawning
in the
d ra inage
drainage
o
Ne== total
total number
numberof
indexstream
in
of spawners
spawners
in index
streamii
((Equation
Equation
2)
2)
Theestimated
( N1)was
The
estimatednumber
h a tcher yfish
numberof
of hatchery
fish (Nh)
fr om:
wascalculated
calculatedfrom:
o
Nh
Nhwpr
Nh = Nhwpr
(4)
(4)
where,
where,
p
percentageof
prior
p =
= percentage
prior
of adults
adults spawning
spawn'ing
to
to I1 January
Januar y
r
o
= percentage
p e rc entage
=
of hatchery
hatcher yfish
fish in
in the
the
lation( N;)
spawning
population(N)
sp a wni
ng popu'
( Np)was
The estimated
The
number of
estimatednumber
of wild
w i 'l d fish
fish (Nw)
wascalculated
calculatedfrom:
fr om :
(s)
(5)
o
- ir,l
* (Nhw
(NnwP
(Nn*- NhwP)
Nw == (NhwP
*nyP)
Nw
Nh) +
Straying
S t r a y i n gRate
R a te
(S) by
Therate
The
rate of
Oregon Aqua-Foods
Aqua-Foods in
of straying
by adult
adu'lt coho
frorn 0regon
in
straying (S)
coho salmon
salmonfrom
o
Y a q u i n aRiver
tthe
h e Yaquina
from
R i ve r was
w a sobtained
fr omthe
the equation:
o b ta 'i n ed
equation:
((6)
6)
s = it1/(r* irn-
S = Np,I(T + Nh - W)
hl)
where,
wher e,
= the
the
T =
T
the total
total return
to the
return of
of adult
adult coho
cohoto
p ri v ate hatchery
private
hatcher y
o
W
t,'|== the
the estimated
wild coho
adults
estimatednumber
numberof wi'ld
cohoadults
private hatchery
captured
capturedat
at the
the private
hatchery
RESULTS
o
F a l l Chinook
Fall
C h ' i n o o kSalmon
Salmon
P
e a kCounts
Peak
Counts
( Ta bl e
( 10.5 m
in 1984
Eleven
standard
streams s(10.5
miles)
weree sur
surveyed
1984 (Table
E l e ve nsta
iles) wer
i n d e x stream
veyedin
n d a rdindex
a
4).
4
).
The
N
Noo c
counts
were
DeepCreek,
Pistol River,
sur vey. The
re p o rte dfor
for the
Cr eek,Pistol
River , survey.
o u n tsu
{e rereported
the Deep
s t a n d a r dindex
standard
i n d e xstreams
tim estotaling
miles.
w e resurveyed
61 times
totaling 64.2
64.2miles.
stre a mswere
sur veyed61
- 9-9-
i krd
River
TrIb.
o
h
q
1950
c) @N
;ntn\o-C
NTC
n(\rro.cN3Frortr
-N
u\tt\
o\ or
104(19)
511 2)
36(13)
83(12)
34(13)
221 9)
hu\
41(15)
lit 0)
f'.|!t u\ro
u\ rn u\r\
o 6 o\ (^
!rF
(te
F@
o\
rfr u\ u\
or o\ o\
161 4)
29( 2)
247(35)
13( 5)
51(12)
291 7)
41(15)
80(13)
251 3)
160(29)
lit 8)
251 7)
47( 8)
90t 2)
53( 8)
117(22)
150(22)
163(29)
111(18)
110(25)
158(41)
110(29)
54(13)
781 9)
133(37)
126(14)
143(43)
1031 8)
661 2)
461 2)
311 2)
ora)Fof.\-o60r
e'tO-|t\llr--ti-!\
F\ONNO\O|lt-orf'\
€t..tNc{N-N€NF
26(14)
30(12)
151 2) 192(52)
48(13)
411 9)
88(20)
231 4)
101 3)
431 2)
@
8)
-10I
f
N\o
FF
A\OU\-O\
ooNroo
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1,8
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1.0
in 22
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.FS
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n
iz
t
{
s$
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st
0.8
0.5
0.8
.+r
I
s.B
R
t
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E
E
R
s.s
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.
uvltdai in the total ,wber of fish to the left
N
'Sq
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qT
.
the ruier of
icy iv alkw sp:wnnj
N
1.0
.$
:s
1.7
44( 6)
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212(17)
p
It 1)
471 4)
Q
bp
ii
501 3)
91 0)
0.5
0.5
0.8
16t 1)
131 I)
-51 I)
14t 1)
341 3)
u\
t
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0.4
tl
Sit 2) 1101 7)
281 0)
o
901 6)
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251 0)
101 0)
26( I)
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131 0)
201 3)
331 0)
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301 I)
-
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--
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rrtt-
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97(11)
108113)
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1984
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511 8)
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61(
-
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651 4)
Nf^O\O{\
631 9) 240134)
105(31)
FNr^
1983
tr/r(lr-F
178(18)
rnCOOOr-
BC 4)
!t
411 I)
95(65)
9 Y Y V Y
101(12)
@
351 3) 183(43)
tttFqJF
122(15)
it..rtOF
GaitI
481 2) 242(24)
s
198(13)
149( 4)
u\
(t
701 2)
OF-n
83(13)
Gr
461 2)
l'.|
I)
-
--
r -
--
-
--
-.
--
-.
oo--
1982
FGN-€l
65( 1)
-loot 2)
41( 8)
59(24)
-.
1081 4)
431 3)
60(18)
-
421
F
120(14)
O
931 3)
On\-FO\tOFcotn\OO-clO
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ou\\otl
211 8)
Fr'16
222(78)
12( 0) 139(24)
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1981
9 v 9 Y V 9 Y V 9
281 0)
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fnootN
461 3)
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tfr t
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(\|
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151 2) 241160)
52(24)
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180(20)
271 9)
261 4)
291 6)
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411 2)
20( 7)
44(28)
OC 0)b
181 0)
221 I)
-
-
--
tlNor'\ono*n
I
nr/\(\l
I
1980
161 2)
|nN@(\1
581 2)
11 0) 262(14)
121 4)
20(12)
ItO\O\t(tOO(DOllNt
ttaNit'q\ootlf
-
t
1978
A A A A
O(\lr,\f/l
110(12)
oo\ocD
NF
16( 6)
221 5)
59123)
43122)
-.
I
1977
N
30(12)
NTtONtTONFOO
F!.N(\|€NhN\')hOT
121 0)
Gr(\l-@rtt
N:
N
401 5)
lOt 1) 166(60)
13t 0) 199(68)
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81 2)
orN(\rd)OFO
-
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-
51 2) 144(56)
rt !.\ON:*
241 4)
@O*O!tGl
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201 4)
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f.\|n{oForo
491 2)
|l\lrrtONf/r
t \OO-N
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48(12)
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lit 0)
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174(39)
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-
74(19)
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-
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2( 0)
rr\0
Ot 0)
-.
100128)
!f
,,
1976
42( 0)
491 4)
157(16)
ul
41(14)
oFNrto
I
1975
65t 4)
Or
461 8)
-
-.
-.
-
-
-
--
-
-.
--.
-
ttff
tttl
1974
92(10)
G|frl 3
crGt @ @@ @
o\ or o\ or o\
851 I)
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66(12)
r.ll} rnrc) F@
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F FF
FFFF
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o\ o\ or or o\ ot o\ o\ o\
161(28)
F
r\O\fitAe
c = @io=
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snF!t
117(46)
(tf\
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59(10)
a@NtO-ONOO
r.l
17(34) 332(76)
NC€tOr\ON-(nONi/\O(DO
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fa !\t
t OriO\O
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95(17)
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115(10)
--
ill 2)
5
11 0)
o
451 5)
84(32)
it 0)
3t 0)
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N
1973
FsFFFOsONO
u\or-\ohoF
361 1)
r'1F
47t 8)
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39C 4)
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168(29)
531 3)
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341 3)
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F\ONlnNtO\Ortfirn(\|--O
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701 8)
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1121 6)
9 V 9 V Y Y V e Y Y - - * Y
94110)
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1979
NN
361
Y99V
ffl
601 9)
62(20) 122(11)
82(15)
Fo^Fc|nU\c|en\O
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421 3)
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421 6)
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611 6)
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801 7)
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t^-F
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1972
OF
F N - +
45(14)
Or€ff.|-(t\h(\l\OOn
-=-nNtrONtl-
78(34)
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|'\tflt@hlF@*A(D
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571 3)
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21 2)
24(14)
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---
16t 7)
-
--
-
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--
131 2)
ttF
Y9VVYYY9VYYYYY9V9YYY99YY
c-rn-OaFOF
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f6lraF-6lrAo{eFNN-qtOnO=+
1971
--O\
NFN
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1970
N!tNU\-F-GlN
(\t
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39(11)
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40t 8)
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1231 2)
-
-
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141 1)
--
lffttfltft
1969
48(22)
52( 1)
\ONNF(\ITOFO@
1968
-
19( 8)
46t 8)
311 9)
63(11)
40( 5)
46(21)
5( 2)
--
-
'\O(\l()O-OON
1967
74( 4)
37t 1)
251 8)
58(16)
--
--
-
-
--
-
Bar
Deep
Salmon.
rtoo$tororo€o
1966
-
88( 6)
21 1)
69( 4)
tr I\ rrt F(D(
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ro rc|roio io lo 16ro io ro
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166(36)
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100(47)
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o €cnF*
q)
l.\-rf
1041 8)
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134(80)
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iffilitfif
1965
O\.{
t
1964
331 9)
97(27)
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trli
1963
l\r^r|
131(12)
N
|
1962
N
36t 0)
69(36)
Nrnt
68( 6)
it 0)
112(46)
It I)
8( 0)
29(10)
F@\Od\
1959
24(19)
561 1)
O
51( 2)
-
Winchuck
Pisto!
Rogue
Jim Hunt
Coguille
Coos
W.F. Millicoma
itittSgt!t
--
104(14)
421 7)
it 4)
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121 7)
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421 3)
11 0)
61 0)
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121 0)
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1961
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226(46)
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Siuslew
otFo
1960
it
OO
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1371 2)
69(11)
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t nrNFG|ror.1{
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105( 0)
Ntf!fr^N
I
1957
t
I
ON
231 2)
-
Buck
Alsee
lt*ttftnroF
t F
I
t
I
Y Y Y
1958
1)
grant
iSiritilii
1956
t\-FF|I\(\|-{.-ro
Ft.l
F$Fc)Uat.r
ill 0)
5(
-
341 8)
Yaquina
Siletz
Sunshine
irtrttt!ft
1955
-
Niagara
Tilamook,
lfll
ff;
l'lil
1954
Y V Y Y Y Y Y 9 Y 9 9 Y Y Y 9 Y 9 Y Y V Y Y Y Y V Y 9 Y Y
13( 0)
Nestucca
Tillamook
N
1953
Humbug
Nehalem
F ( \ I
1952
I lslsl
! lild
i l*lrl
I
I
1951
E|g|'I
Peak counts in selected spawning fell chinook surveys, 1950'84.
lttftttttt
fltfifrftf
I.
ildq
ils|q
{ |;lsl
Table 4.
.ct
N-or^
*
x
.ri
ss
5s
o
The
count
11 index
streams
was 88.5
88.5 adults
adults a
and
T
h e average
a ve ra g efish/mile
fi sh /mi l e co
unt in
index str
nd
in the 11
eam swas
o
j a c k s totaling
8.0
t o t a l i n g 96.5
9 6 . 5 fall
f a l l chinook/mile
5).
8
. 0 jacks
c h i n o o k / m i l(Table
e( T a b l e5).
The
T
h ecount
a d u l t s was
was
c o u n tof
o f adults
poorcount
in
l a r g e st recorded
re co rd e dsince
beganin
in 1950
1.950
in spite
count
the
t h e largest
si n ce surveys
su r veysbegan
spite of
of aa poor
j a c k s was
F o r k Millicoma
T h ecount
recorded
r e c o r d e din
i n the
t h e West
W e s tFork
M i l l i c o m aRiver.
R i v e r . The
c o u n tof
o f jacks
w a sslightly
slightly
o
below
b e l o waverage.
a v e ra g e .
in
T h etrend
is illustrated
The
average
peak chinook/m
chinook/mile
tre n d in
i n the
th e a
countsis
illustr ated in
ve ra g epeak
ilecounts
Figure
F i g u r e1.
L.
o
the
Following
the
mid-1950s,
F o 'l l o w i n gth
hasbeen
beenan
anupward
upwar trend
dtr end'in
in the
e mi
d -1.950' there
s,
ther ehas
spawning
s p a w nn' gi stocks.
sto cks.
Coho
Salmon
CohoSalmon
o
P e a kcounts
Peak
c o un ts
index
Coho
The standard
in 48
48 index
in 1984.
1984. The
standardindex
Cohosalmon
salmonwere
were counted
countedin
index streams
streamsin
( Tab1 e
( 744.7m
peakcounts
streams
miles)
w e resurveyed
iles) to
to obtain
obtain peak
counts(Table
su rve ye d684
6 8 4 times
ti mes (744.7
s t r e a m swere
o
6).
o
l.
peak fish/mile
of
of
total escapement
escapement
of
Table6.
Surrnary
fish/mile counts
and estimated
estimatedtotal
Table
6. Summary
of peak
counts and
1.984.
coho
fisher y district,
distr ict, 1984.
i n standard
sta n d a rdindex
i n d e xstreams
str eamsby
by fishery
c o h osalmon
s a l mo nin
o
o
o
Survey effort
Survey
effort
Fishery
F
ishery
district
d
i str i ct
No.
surveys
su rve ys
Miles
MiI e s
Total
Total
miles
miles
Peak
Peakcount
count
per
per mi
mile
Ie
Adults
Jacks
fiA'ilT3---Jaffi
Estimated
escapements "
Estimate{sssg@
-No.No.
Jacks
surveys
Adults Jacks
surveys Adults
7
Astoria
Astori
7
a
7
Tillamook
T
illamook
7
Lincoln
10
Lincoln
1.0
Siuslaw
8
S i u s la w
8
7
7
Umpqua
Umpqua
Coos/Coquille
C o o s / C oqIu1ie 99
6.6
6
.6
7.4
7.4
10.6
10.6
7.5
7.5
11.5
11.5
9.4
9.4
77.2
77.2
96.6
96.6
181.9
1
81.9
125.6
L25.6
140.0
140.0
123.4
t23.4
25
25
12
12
17
L7
8
8
10
10
30
30
3
2
2
36
25
2L0
1 6
1
2
26
7
79
Oregon
0regonCoast
48
Coast48
53.0
53.0
744.7
7
44.7
17
L7
3
10
6
6
9
12
t2
42
42
45
45
5
aEi,sh/nriLe derived
(AUC) eetimates.
esti,nates.
apish/mile
(A(JC)
areantnderth*eunue
deri.oed from
from area-under-the-curve
a
o
-11-
-.11-
4
4
4
4
3
3
2
2
3
3
61
61
30
30
44
44
18
18
21
77
77
6
5
2t
T a b l e5.
Table
5 . Average
A ve ra g enumber
n u mb eof
index
or f fish/mile.observed
fi sh/mile.obser vedin
in standard
index
standar dspawning
spawning
streams.
s t r e a m s.
Chinook
C
h i n o o kSalmon
S a l mo n
Year
Year Miles
M ' l e S Jacks
J a c l ( s Adults
A d ul t s Total
Total
1948
1948
1949
1949
1950
19s0
1951
1951
1952
1952
1953
1953
1954
1954
1955
1955
1956
1956
1957
1957
1958
1958
1959
1959
1960
1960
1961
1961
1962
1962
1963
1963
1964
1964
1965
1965
1966
1966
1967
L967
1968
1968
1969
1969
1970
1970
1971
L97L
1972
1972
1973
1973
1974
1974
1975
1975
1976
1976
1977
1977
1978
1978
1979
1979
1980
1980
1981
1981
1982
1982
1983
1983
1984
1984
.0
.0
.0
.0
3.1
3
.1
3.1
3.1
7.1
7. L
8.7
8.7
7.1
7. t
7.1
7. L
7.9
7.9
8.7
8.7
7.7
7. 7
8.7
8.7
7.1
7.L
9.2
9.2
9.2
9.?
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.7
9.7
8.9
8
.9
9.2
9 .2
4.6
4
.6
10.5
1 0 .s
11.0
1 1 .0
10.5
10.5
10.5
10.5
10.5
1 0 .5
10.5
10.5
11.0
1
1.0
11.0
11.0
10.5
1 0 .5
.0
.0
.0
.0
7.7
7.7
2.6
2
.6
9.9
9
.9
4.7
4.7
3.5
3
.5
13.4
13.4
5.9
5.9
12.0
12.0
8.6
8.6
3.7
3.7
27.3
2
7.3
11.6
11.6
10.0
10.0
10.7
10.7
11.4
11.4
19.5
1
9.5
12.2
L
2.2
12.0
1
2.0
10.2
I0.2
11.1
1
1. 1
20.9
20.9
8.9
8.9
19.9
1
9.9
5.4
5.4
13.6
1
3.6
22.8
2?.8
15.4
1
5.4
14.0
14.0
6.9
5.9
14.4
1
4.4
13.9
1
3.9
7.8
7.8
10.8
1
0.8
2.5
2.5
8.0
8.0
Miles
M
il e s
Coho
Salmon
Coho Salmon
Chum
Salmon
Chum
Salmon
Jacks
Adults
.Jacks A
c l u l t s Total
Tota'l ffil€TA'ffilTs
Miles Adults
..00
.0
.0
..00
.0
.0
.0
.0
.0
.0
.0
.0
..00
.0
.0
.0
.0
.0
.0
.0
.0
27.4
27.4
4
5.8
45.8
77.6
7 7. 6
18.5
18.5
17.9
L 7. 9
16.9
15.9
12.4
t2.4
37.8
37.8
55.8
55.8
39.0
39.0
32.8
32.8
51.2
5 1. 2
42.3
42.3
55.5
5
5.5
62.5
62.5
59.1
5
9.1
61.8
5
1.8
49.6
49.6
32.9
32.9
36.8
3
5.8
79.9
79.9
43.2
43.2
41.3
4 1. 3
51.8
5
1.8
58.8
5
8.8
58.7
5
8.7
39.5
39.5
67.9
67.9
77.0
7 7. 0
81.5
81.5
79.0
7
9.0
74.2
74.2
79.0
7
9.4
39.0
3
9.0
88.5
88.5
35.2
3
5.2
48.4
48.4
87.5
87.5
23.2
23.2
21.4
2L.4
30.3
30.3
18.4
18.4
49.8
49.8
64.4
64.4
42.6
42.6
60.1
60.1
62.8
6 2.8
52.3
52.3
66.2
66.2
73.9
73.9
78.6
78.6
74.0
74.0
61.5
61
.5
43.2
43.2
47.9
47.9
100.8
1 00.8
52.1
52.L
61.2
61.2
57.2
57.2
72.4
72.4
81.5
8
1. 5
55.0
55.0
81.9
8
1.9
83.8
83.8
95.9
95.9
92.9
92.9
82.0
8
2.0
89.8
8
9.8
41.5
4
1. 5
96.5
96.5
10.1
10.1
10.9
10.9
10.9
10.9
10.9
10.9
10.9
10.9
12.1
t2.1,
12.9
L2.9
12.9
12.9
13.6
13.6
13.6
13.6
14.4
L4.4
14.4
L4.4
14.4
t4.4
14.4
L4.4
14.4
L4.4
14.4
14.4
14.4
t4.4
12.9
L2.9
11.3
11.3
14.4
1
4.4
14.4
14.4
14.4
L4.4
14.4
L4.4
14.4
14.4
14.4
1
4. 4
11.3
1 1. 3
14.4
14.4
14.4
14.4
14.4
L4.4
14.4
14.4
14.4
14.4
52.7
52.7
53.0
53.0
53.0
5
3. 0
53.0
53.0
-L2-12-
2.9
2.9
9.4
9.4
3.9
3.9
2.8
?.8
4.1
4.L
2.0
2.0
12.0
L2.0
2.4
2.4
2.9
2.9
1.7
1.7
8.1
8.1
13.0
13.0
4.7
4.7
7.6
7.6
8.5
8.5
15.4
15.4
4.4
4.4
25.0
25.0
2.0
2.0
13.0
13.0
6.0
6
.0
3.0
3.0
5.7
5.7
2.4
2.4
11.0
11.0
5.1
5.1
5.1
5.1
2.3
2
.3
2.8
2.8
2.5
2.5
5.5
5.5
1.6
1.6
6.6
6.6
1.9
1.9
3.0
3.0
22.3
22.3
66.2
66.2
49.1
4
9.1
14.4
14.4
15.0
15.0
29.5
29.5
37.6
37.6
40.2
40.2
14.3
14.3
26.8
26.8
13.7
L3.7
47.2
4 7. 2
37.0
3
7.0
25.2
25.2
53.8
5
3.8
55.5
55.5
33.8
3
3.8
39.4
39.4
25.3
25.3
31.2
3L.2
42.6
42.6
48.1
48.1
14.9
14.9
28.3
28.3
17.9
1
7. 9
20.0
20.0
20.3
2
0.3
7.8
7.8
9.4
9.4
21.7
2I.7
13.5
13.s
8.4
8.4
16.1
16.1
6.7
6.7
16.8
16.8
25.1
25.L
75.7
75.7
53.0
53.0
17.2
17.2
19.1
19.1
31.5
31.5
49.6
4
9.6
42.6
42.6
17.2
L7.2
28.5
28.5
21.7
2I.7
60.1
6
0.1
41.7
4t.7
32.8
32.8
62.3
62.3
70.9
70.9
38.3
38.3
64.3
6
4.3
27.3
2 7. 3
44.2
44.2
48.7
48.7
51.0
51.0
20.6
20.6
30.7
3
0.7
29.0
29.0
25.1
2 5. 1
25.4
25.4
10.1
10.1
12.2
L2.2
24.2
24.2
19.0
19.0
10.0
10.0
22.7
22.7
8.6
8.5
19.8
19.8
1.7
t.7
1.7
I.7
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.s
2.5
2.5
2.5
?.s
2.5
2.5
2.5
2.5
2.5
2.5
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
5.1
5.1
4.1
4.1
5.1
5.1
654.7
654.7
1,251.2
L,25L.2
349.6
349.6
670.8
670.8
296.4
296.4
487.6
487.6
615.2
615.2
138.8
138.8
127.6
L27.6
266.0
266.0
273.2
273.2
112.8
112.8
65.4
6 5. 4
95.8
9
5. 8
458.3
458.3
336.7
336.7
314.0
314.0
132.5
132.5
309.6
309.5
159.2
159.2
174.8
174.8
239.4
239.4
403.3
403.3
285.4
285.4
442.3
442.3
7 4 6. 9
706.9
693.5
693.5
640.8
640.8
242.3
242.3
337.9
337.9
614.0
614.0
53.6
53.6
184.7
L84.7
4
43.8
3.8
523.3
523.3
361.2
361.2
313.3
313.3
o
o
1980
O
€
o)
g
ndex areas of Oregon
o
o
ct)
(u
L
o
.n
r!
o
o
L
G'
x
o
€
c
L
,s
1970
o
Trends in the escapement of chinook salmon in the standard
coastal rivers since 1950
?
o
F
Ol
E
g
f6
tn
YEAR
E.
LJ
o
o
g
g
o
'E
ta
L
1960
o
o
CO
O)
o
o
(J
o
(u
o
O
CL
ct
I
aa
(u
(u o
lr)
.C 6r
g(l,
1950
20
40
O
(o
(f,
N
tf
LU
0
LU
0
Lii
C/)
I
lllr\,/HSIJ XV3d S'VUIAV
o
0
o
60
80
o
o
tr)
-J
O
Lii
100
in
o,
13 r'
U.A
LL
F(u
Figui'e 1
o
c)
(u6
=t^
o)('
.Fo
tL(J
-13-
.
p e a kfish/mile
The
T h eaverage
a ve ra g epeak
fi sh /mi le in
48 index
indexstreams
str eam swas
and3.0
3.0
in 48
was16.8
16.8adults
adultsand
jjacks
a c k s for
peakcount
8 coho/mile
f o r aa total
to ta l of
o f 19
1 9 .8
Theaverage
5
co h o/m ile. The
aver agepeak
of adults
adults was
was22.5
countof
( Table5)
times
t i m e s larger
l a rg e r than
th a n in
i n 1983
1 9 8 3when
5) .
w h enrecord-low
wer erecorded
r ecor ded(Table
r ecor d- lowcounts
countswere
( 25- 30
P
e a kcounts
l a rg e st in
Peak
were
districts
c o un tsw
e relargest
i n the
th e Astoria
Astor ia and
andCoos/Coquille
Coos/Coquille
distr icts (25-30
( 1 7adults/mile),
adults/mile),
a d u l t s l m i l e ) , intermediate
intermediate
in
D i s t r i c t (17
i n the
t h e Lincoln
and
L i n c o l nDistrict
a d u l t s / m i l e ) ,and
( 8 - 1 2adults/mile)
smallest
and
s m a l l e s tin
i n the
t h e Siuslaw,
S i u s l a w ,Umpqua,
d i s t r i c t s (8-12
Umpqua
T i l l a m o o kdistricts
adults/mile).
a,n dTillamook
j a c k counts
jacks/mile)and
( 7 jacks/mile)
P e a kjack
Peak
District
l a rg e st in
Distr ict (7
and
co u n tswere
w e relargest
in the
the Coos/Coquille
Coos/Coquille
j a cks/mi l e in
rranged
a n g e dfrom
f ro m 1
to 33 jacks/mile
1 to
in all
all other
other districts
distr icts.
peakcoho/mile
T h etrend
in the
the
The
tre n d in
i n the
th e average
a ve ra g epeak
hassharply
shar plydeclined
declinedin
coho/r nilehas
( Figur e2)
standard
s t a n d a r dindex
i n d e x streams
the mid
m id 1960's
1960' s(Figure
2) .
stre a mssince
si n ce the
(AUC)
Tota'l escapement
Total
(AUC)
escapement
42 of
48 index
index
A sufficient
in
A
numberof
in 42
of the
the 48
sufficient number
of surveys
surveyswas
v{asconducted
conducted
(88%)to
streams (88%)
in
in the
the
streams
to obtain
obtain estimates
estimatesof the
the total
total coho
cohosalmon
salmonspawning
spawning
averaged
averaged
index
index area
the AUG
AUCtechnique
technique. The
The estimated
total escapement
area using
using the
estimatedtotal
escapement
j a cks/mi lein
( Tab1e
4 5 adults/mile
45
(Table
6).
a d u l ts/mi l eand
42 standard
indexstreams
6) .
a n d55 jacks/mile
in the
the 42
standar dindex
str eams
par alle' ledpeak
peak
gener al' ly
The
each
paralleled
T h eestimates
distr ict generally
e s t i ma te sof
to ta l spawners
within
eachdistrict
o f total
sp a w n erwithin
s
f i s h / m i l e indexes.
P e a kcounts
for 38%
of the
the total
total
for
fish/mile
i n d e xe s. Peak
co u ntsof
accounted
38%of
of adults
adults accounted
estimated escapement
in
estimated
in the
the index
index streams.
escapement
streams.
H a t c h e r y-i n fl u e n ceversus
d rsu swild
Hatchery-influenced
ve
w i l d streams
str eams
The average
total escapement
escapement in
in 93
93 hatchery-influenced
hatchery-influenced streams
streams
The
averageestimated
estimatedtotal
j a cks/mi l e compared
in 2
was
to
37 adults
jacks/mile
288
to 37
adults and
and 3 iacks/m
4 3 adults
compar ed
w a s43
a d u l ts and
a n d55 jacks/mile
ile in
p re d o mi n ately
These estimates
based o
onn a
a
ar e based
stocks. These
estimatesare
streams
wild
s t r e a m scontaining
wild stocks.
co n ta i n i n gpredominately
( excludingsurveys
sur v ey s
nonstandarsurveys
sur
d veys(excluding
ttotal
o t a l compilation
andnonstandard
c omp i l a ti o nof
o f all
a l l standard
sta n dar dand
the 1984-85
season.
in
during
spawning
season.
i n tributaries
t r i b u ta ri e s of
dur ing the
1984- 85
spawning
o f lakes)
l a ke s) conducted
co n ducted
-14-14-
S
o
Figure 2. Trends in the escapement of coho salmon in the standard index areas of Oregon coastal
rivers since 1950.
S
o
.q
tn
ct
o
u
1980
S
o
O
€
o)
o
(t)
(u
L
o
o
vl
t6
S
o
(u
L
.q
x
(u
'0
g
S
o
3
L
.q
!
g
i6
1970
o
r\
gl
o
YEAR
o
E.
S
o
LJ
o
G'
a
o
o
S
o
1960
o
(o
Ol
{J
o
G
(u
o
a
'U
.
o
(J
0
(u
c,
c
o
.^o
1950
o
to
o,
N
W
(jfl
-i5I
0
LU
C/)
L.
I
=
llr^t/HSH )Vld :cvul^V
I-
o
o
0
o
40
@
LiJ
o
o
lf
60
80
o
@
<20
o
€
g
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(tl
(l)-r
L
l - ( u(J
g
(\t r,
(uul
LL
5(u
cD>
lr-
L
..
a
N o n s t a n d a rd
su rve yscomprised
co mp ri se 59%
d59%or
Nonstandard
surveys
or 1,093.1
1,093.1miles
miles of
the 1,839.0
of the
1,839.0miles
m iles
s u r v e y edfor
surveyed
fo r coho
co h osalmon.
A l l standard
sa l mo n . All
standar dand
andnonstandard
nonstandarsurveys
d veysfor
for coho
sur
coho
s a l m o nare
a re summarized
su rma ri ze d
fi sh er y district
salmon
by
B.
b y fishery
distr ict in
in Appendix
Appendix
B.
Es c a p e meinto
innt to Tenmile
Escapement
T e n mi l elakes
l a ke s
jacks were
P
e akcounts
co u n tsof
o f 167
1 6 7adults
Peak
a d u l ts and
and58
58 jacks
wer eobtained
obtainedin
in 4.8
miles of
4.8 miles
of
s t r e a m ssurveyed
streams
s u rve ye d
at
a t Tenmile
T e n mi l elakes.
pr evious
l akes. Based
Basedon
thesecounts
on these
countsand
andprevious
populationestimates
programs,the
estimatesfrom
from tag-recapture
tag-recaptureprograms,
population
in
the total
total escapement
escapement
in 1984
1984
jacks.
was5,000
5,000adults
was
adults and
and3,000
3,000jacks.
year
The
total return
The total
return from
from the
the 1981
198Lbrood
broodyear
was
w a sonly
o n l y 6,500
6 ,5 0 0coho
co h osalmon.
sa l mo n .
Chum
Salmon
Chum
S a lmo n
T i l l a m o o kBa
Tillamook
Bay
' in eight
P e akcounts.
Peak
co u n ts. Chum
salmon
Chum
sa l monhave
havebeen
beenirregularly
ir r egular ly counted
countedin
eight streams
str e am s
(T a b l e7).
since
s i n c e 1948
1 94 8(Table
7 ).
S e ve nindex
i ndex streams
Seven
str eamsare
ar e currently
cur r ently used
usedto assess
assessthe
the
c o n d i t i o nof
o f the
t h e stocks
condition
s t o c k sin
i n the
t h e Miami,
M i a m i ,Kilchis,
K i l c h i s , and
l ' | i l s o nrivers.
a n dWilson
rivers.
T h eseven
The
seven
i n d e x streams
s t re a msw
peak
index
were
e resurveyed
2 3 times
su rve ye d23
tim es totaling
totaling 13.7
13.7 miles.
m iles. The
Theaverage
aver agepeak
c o u n t in
i n the
th e standard
sta n d a rdindex
i n d e xstreams
count
streamswas
350chum/mile.
was350
chum/mile.
p e a kcounts
Av
era g epeak
( Figur e3).
h a vewidely
Average
co u n tshave
fluctuated since
widely fluctuated
since 1948
1948(Figure
3) .
The
The
ffluctuations
l u c t u a t i o n s since
pr imar ily been
si n ce 1962
1 9 6 2have
h a veprimarily
to
beenin
in response
r esponse
to variable
var iablenatural
natural
s u r v i v a l rates
r a t e s following
f o l l o w i n gclosure
survival
c l o s u r eof
t h e commercial
o f the
c o m m e r c i gill-net
agli l l - n e t fishery
f i s h e r yin
in
T
i l l a m o o kBay
Tillamook
B a yin
i n 1961.
1961.
Trap
T r a pcounts.
counts. A
A trap
t r a p was
i n Coal
w a sinstalled
i n s t a l l e d in
C o a lCreek,
C r e e k ,Kilchis
K i l c h i s River,
R i v e r ,in
i n 1977
1977
pr ivate
tto
o ccollect
o l l e ct eggs
e g g sfrom
fro m excess
for distribution
distr ibution to
e xce sschum
chumsalmon
salmonfor
to private
hatcheries.
personneland
hatcheries. The
The trap
hatchery
trap was
operatedby
by ODFW
ODFI,{
hatcherypersonnel
wasoperated
and funded
fundedby
by
inter estsrretain
p
r i v a t e ha
ivate 'interests
tch e ryooperators
private
hatchery
with
private
p e ra to rsw
i th the stipulation that pr
etai n
9 0 %of
t he eggs
90%
o f the
e g g sand
a n dreplant
re p l a n t 10%
1 0%as
as smolts
smoltsin
in Coal
CoalCreek.
Cr eek. In
In addition,
addition, aa
-16-16-
po
T a b l e 7.
Table
7.
o
Year
Year
o
o
o
o
o
.
o
o
o
o
P
e a kco
u n tso
Peak
counts
ch u msalmon
Tillam ookBay
salm onin
in Tillamook
off chum
Baytributaries,
tr ibutar ies, 1948-84.
1948-84.
M
l a m rRiver
Rlver
Miami
Main Moss
Prouty
Moss Prouty
Main
S te m Cr.
C r.
C r.
Stem
Cr.
1948
1948
49
49
1950
1950
5
511
5
522
53
53
54
54
55
55
56
56
57
57
58
58
59
59
1960
1960
61L b
b
6
62
62
63
63
64
64
65
65
66
66
67
67
68
68
69
69
1970
1970
7L
71
72
72
73
73
7
744
7
755
7
766
77
77
78
78
79
79
1980
1980
81
81
82
82
83
83
84
84
29
29
330
330
73
73
L4
14
10
10
54
54
34
34
7
-7
LO;
0
102
0
136
136
6
6
57L
86
571
86
302
39
302
39
323
323
18
18
104
104
0
0
194
194
50
50
L73
173
31
31
151
9
151
9
214
4
214
4
13s 183
135
183
laz 73
102
73
235
235
13
13
371
37L 333
333
4 1 6 111
416
111
349
349
173
173
148
148
19
182
182
-:-:
857
857
27
27
-13
13
4
4
6
6
- 149 191
149
191
189 107
189
107
94
94
tLz
112
M il e s
Miles
0.6
0.6
--
--_
---------
450
450
361
361
?56
256
193
193
0.6
0.6
------------L7
17
4
4
0
0
3
3
178
178
2
2
3
3
15
15
42
42
0
0
33
33
62
62
70
70
119
119
136
136
85
85
-9
0
-.;
--
5
3
3
- -
22r
K i l c h i s River
River
Kilchis
Coal
Clear
Stem Cr
Cr .
Stem
Cr.
Cr..
Main
ffi
---*
---------65
65
76
76
--
---
----------
104
104
154
154
220 L,L42
220
1,142
165
802
165
802
65
870
65
870
30
404
30
404
6 1 1,002
1,002
61
18
430
18
430
37
413
37
413
34
34
812
812
8
1,383
855 1,383
105
105
889
889
27L 1
271
,358
1,358
325 1,662
325
I,662
L ,256
1,266
813
813
797
797
1,329
1,328
397
397
313
313
284
284
916 Ce
916
985
985
300 d
300
52
52
-- -
57
57
-- -
454
454
L,347
1,347
420
420
699
699
487
487
780
780
906
906
201
201
L02
102
3s1
351
331
331
87
87
2
2
13
13
6
6
5
5
18
18
0
0
L2
12
3
3
0
0
1
1
23
23
22
0
0
3
3
85
85
22
22
2
-:-:
-75
75
--
221
14
L4
70
70
231
231
-324
324
475
475
425
425
351
351
s3i
532
I02
102
0.5
0.5
1.0
1.0
0.5
0.5
0.6
0.6
70
70
tli I son River
River
Wilson
Ti I I amook--River
Tillamook
River
TfiilE.]qor-tfr'
TE.i-n--rLittle Nort
Main
Fork
Fork
209
209
419
419
t42
142
7t2
712
L82
182
104
104
381
381
97
97
194
194
17?
172
153
153
Lsz
152
20
20
27
27
25
25
109
109
13
13
6
611
87
87
25
25
107
107
50
50
64
64
94
94
L27
127
474
474
373
373
310
310
214
214
124
124
326
326
82
82
724
724
182
L82
825
825
595
595
484
484
0.5
0.5
Stem
Stem
-------- -
----4
4
39
39
6
611
62
62
16
16
18
18
74
74
41
41
1
111
1
155
27
?7
13
13
83
83
68
68
63
63
66
66
45
45
L22
122
182
L82
14
L4
43
43
- -
----
0.8
0.8
allon8tc,,id,d surueA
survey mdt.
unit.
lNottetmdard
bcomnereial qtlla-et
du,n salmon
satmon closed
elosed, after
gill-net fisheries
fisheries for
after the
the 1961
7967season.
eecraon.
fon chwn
eTrq constructed
eowtmrcted 0.5
0.5 mile
mi.Leabove
abooe the
CTrap
the mouth
mouth washed
uta.shdout
out on
25 November
Nouaber 1977.
on 25
79??.
(Sqne 1980).
astdnated total
total run was
tNrB916
The estimated
976chum
ehunsalmon
salmon(Sorns
LggT).
-The
"unfrom 0.8
dsunteU anea
durvy
area sho"tend,
shortened
mite to
to A.5
0.5 nile
mile beloa
below the
the Coal Creek Tnap
Trap
fron 0.8 rrile
since 1978.
si,nee
7978.
-I7 -17-
Trends in the escapement of chum salmon in the standard index areas of Tillamook Bay
Figure 3.
since 1948.
IU
ao
.la
o
o
1980
o
o)
o
.^
C'
o
S
IU
@
L
,q
E
L
ct
S
o
r\
1970
I
I
I
£
x
(u
c
'l'
$
E
GI
$
I
+,
tn
YEAR
I
o
I
l!
.c
'F
O
(o
or
'q
an
I
Q
S
1960
I
I
o
I
I
+)
r,}I
o
I
+.,
I
I
(l)
CL
rt'
{J
tn
1950
I
I
I
o
O
r')
ct)
(l,
.g
P
c
.F
ta
E
g
(u
L
.re
800
200
o
o
C\
I-
- 18-
w
>
LU
uJ
I
lllr\,/HSIJ )V3d feVuiAV
o
0
o
o
o
1000
12
o
o
c\
. €@-
(. Ctr
(l)
L(l,
5(J
gtc
LL
t,
S
(u
o
predetermined
trap was
Thetrap
was
upstream
to spawn.
predetermined
number
of
upstream
to.
adultswas
wasreleased
released
spawn. The
number
of adults
o
p
l a c e din
the
about0.5
0.5 mile
mile above
abovethe
placed
fish
fish survey
unit about
sp a w n ing
sur veyunit
i n the
th e standard
sta n d a rdspawning
m i l e.
from
mile to
to 0.5
0.5 mile.
fr om0.8
0.8 mile
m o u t h . As
re su l t, the
th e survey
su rveyunit
wasshortened
shor tened
mouth.
As aa result,
unit was
( Table8).
per sonnel
B) .
1977(Table
Trap
since
T r a p records
since1977
b e e nmaintained
ma i n ta inedby
by hatchery
hatcher ypersonnel
r e co rd shave
h a vebeen
o
10
and10
between
November
In
1984, 824
824 chum
88 November
and
Coal Creek
Creekbetween
In 1984,
weretrapped
trappedin
in Coal
chumsalmon
salmonwere
taken in
in
Approximately 390,000
eggs $,ere
were collected
females taken
frorn 156
156 females
December"Approximately
December.
390,000eggs
collected from
tthe
h e trap.
trap.
o
481
trap was
Creektrap
was 48%
The
the Coal
Coal Creek
The sex
ratio of chum
salmonhandled
handledat
at the
sex ratio
chumsalmon
( 1977- 83 )
year s(1977-83)
pr eviousyears
r atio in
in previous
females
f e m a l e sand
T h eaverage
a v er agesex
5 2 %males.
ma l e s. The
sex ratio
an d52%
( 44%females
r opor tion of fem
and 56%
ales(44%
contained
proportion
females
females and
56%
c o n t a i n e daa slightly
sma l l e r p
sl i g h tl y smaller
o
males).
males).
takes are
No further
further egg
egg takes
are
1984. No
take in
in 1984.
The trap
was closed
the egg
eggtake
The
trap was
after the
closed after
p l a n n e dat
planned
th e trap
tra p site.
at the
si te .
o
T a b l e8.
Table
B.
Released
Releasedabove
above
Males
Females
ffiffi
Year
Year
a
o
o
1977
L977 bb
78
78
79
79
1980
1980
81
81
82
82
83
83
84
B4
1977-84.
r ecor ds,1977-84.
tr appingrecords,
Coal
trapping
K i l ch i s River,
River , chum
chumsalmon
salmon
C re e k,Kilchis
C o a l Creek,
209
209
745
745
241
24I
365
365
272
272
958
958
575
575
430
430
176
t76
379
379
126
t26
209
209
224
224
334
334
272
272
238
238
Spawned (:
Spawned
1
L5uriea
uur
le0
Males
Fema1i
Males
ffi
82
82
254
254
0
52
52
368
368
0
0
0
0
0
0
38
38
0
0
0
0
-:
---
3
3
155
1
--
0
0
53
53
109
109
366
366
300
300
156
156
34
34
0
0
Females
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
tiotai
of,al
trapped
tr
519
5
19
1,746
L,746
367
367
665
665
605
605
1,661
1,561
1,196
l.,196
824
824
tnaP.
the trap.
abovethe
reLeased above
aMale
tsually released
ue usually
used for
spanning are
ehwn used
fon spawning
ldale chum
DTnap washed
9L6 in
d 916
in
estimated at
?un estimated
salnon run
Total chum
ehum salmon
llooaniber 1977.
7977. Total
bTrap
25 November
utashedout
out 25
(Sans 1980).
Coal Creek
CoaL
Cneek(Sums
1980).
Nestucca
N e s t u c c aRiver
River
since 1950
1950
Chum
salmon
been
counted
Clear Cr
Creek,
Nestucca River
River,, since
eek, Nestucca
in Clear
e e nco
h a veb
untedin
C h um
sa l mo nhave
o
( T a b l e9).
(Table
9 ).
the long-term
long- ter m
pr ovide aa useful
of the
The
indicator of
useful indicator
T h e annual
a n n u a lsurveys
su rve y sprovide
River .
trend
River.
i n the
th e Nestucca
N estucca
t r e n d of
o f chum
ch u msalmon
sa l mo nin
o
- 19-19-
T a b l e9.
Table
9.
Peak
River,
Creek,
P
e a kcounts
o f chum
ch u msalmon
salmonin
in Clear
River , 1950-84.
1950 - 84.
co u n tsof
Clear Cr
eek,Nestucca
Nestucca
Year
Year
1950
1950
51
51
52
52
533
5
54
54
555
5
56
56
577
5
58
58
599
5
1960
1960
61
61
62
62
63
63
64
64
65
65
66
66
67
67
68
68
69
69
Peak
Peak
count 4
a
count
Year
Year
1970
L970
566
5
73
73
43
43
5
5
178
L78
355
3
13
13
88
88
165
165
36
36
6
6
57
57
156
156
196
196
40
40
35
35
89
89
72
72
80
80
35
35
71
7L
72
72
73
73
74
74
75
75
76
76
77
77
78
78
79
79
1980
1980
81
81
82b
82 b
83b
83 b
84b
84 b
Peak
Peak
count
count
53
53
45
45
49
49
109
109
214
214
34
34
72
72
116
116
295
295
18
18
87
87
9
9
45
45
49
49
93
93
asumseyed0.8
aSu,,ed
0.8 mile.
mile.
DLandowtep
bLa,,4oer
denied
to lower
0.2 mile
ups
mile of
of the
denied accees
Louter0.2
0.2 wtle
the survey
nile wae
aceeas to
sun)eg and
otd 0.2
added to
to the
the upper
uppenend.
end.
,added
The
the
area
was surveyed
IIn
n 11984,
11.2 miles.
miles. The
9 8 4 , th
e iindex
ndexa
re a was
14 times
times totaling
totaling 11.2
sur veyed14
p e a kcount
(116fish/mile)
peak
1984.
1984. AA
c o u n t was
w a s93
9 3 chum
sa l mo n(116
fish/m ile) on
on 11
Ll November
November
ch u msalmon
l a n d o w n ehas
landowner
hr a s denied
to the
the lower
lower0.2
1.982
d e n i e daccess
0.2 mile
mile of
the index
indexarea
ar easince
since1982
a cce ssto
of the
year s. Ther
p ro p o rti o nof
pr eviousyears.
Therefore,
where
in
la rg e proportion
efor e,
w h e r eaa large
o f chum
chumsalmon
salm onspawned
spawned
in previous
p e a kcounts
p ro bab' ly
peak
smaller
in
r elative to
made
in earlier
ear l i er
c o u n tssince
si n ce 1982
1 9 8 2are
a re probably
sm allerrelative
to counts
countsmade
yyears.
ears.
Pe akcounts
fluctuations since
1950
Peak
sa l monhave
haveshown
widefluctuations
since1950
co u n tsof
o f chum
ch u msalmon
shownwide
((Figure
F i g u r e4).
gener allyoccurred
has
since 1954
195 4
4 ). AA 4-year
4 -ye a r cycle
dominance
has generally
cycl e of
o f dominance
occur r edsince
corresponding
dominant 4-year-old
4-year-old spav{ners
spawners prevalent
prevalent in
Oregon chum
chum
correspondingto the dominant
in Oregon
pr oduced
gener allyproduced
lar ge
of
generally
large
have
salmon
n u mb e rs
s a l m o nstocks.
s to cks. Large
L a rg enumbers
of spawners
spawnerhave
s
poor
gener allyresulted
in poor
returns
of
generally
r e t u r n s while
n u mb e rs
have
r esultedin
o f spawners
spawnerhave
s
wh i l e small
sma l l numbers
-20-20-
-
Trends In the escapement of chum salmon in Clear Creek, Nestucca River, since 1950
o
r.r)
Or
1980
o
o
(J
6
ol
ttl
L
o
e
rg
{J
I
ttl
o
=
.&
(u
1970
o
(l,
L
CJ
F
o)
L
G'
o
(.)
lrl
c
YEAR
E.
g
9,
€
an
F
1960
o
(o
€tt
I
o
(u
F
(lJ
e
tl'
(J
tn
o
o
g
1950
o
rr)
100
200
400
300
o
o
c\l
Figure 4
o
O
rn
(l,
L
A
cD
0
E
=l
(l,
L
>
LU
0::
hi
-2LI')
LU
a-
cc)
I
=
bJ
l]ttry,/Hstj)vld lcvul^V
:qr
ye a rslater.
returns
r e t u r n s 44 years
l a te r.
pr imar ily fluctuated
N e stuccachum
Nestucca
fluctuated fr
from
haveprimarily
chumsalmon
salmonhave
om
n
atural m
o rta l i ty factors
fa cto rs alone
gi1' l- netfisheries
a l o nesince
natural
mortality
gill-net
since commercial
cor r ilner cial
fisher ies were
wer e
( C l e a v e 1951).
r1 9 5 1 ) .
closed
c l o s e dafter
M a r c h1927
a f t e r March
1 9 2 7(Cleaver
HatcheryCoho
Hatchery
CohoSalmon
SalmonStrays
Strays
Coded-wire
tag
C o d e d - wi re
ta g recoveries
re co ve ri e s
Three
from Oregon
Three CWT-marked
CWT-marked strays
were
strays from
0regonAqua-Foods
Aqua-Foods
wererecovered
recoveredin
the
in the
Y
a q u i n aRiver
(T a b l e10).
Yaquina
R i ve r in
i n 1984
1 9 8 4(Table
10) . No
No tagged
taggedstrays
or
str ays from
fr om Oregon
Or egonAqua-Foods
Aqua- Foo ds
or
Anadromous
t'{erefound
found in
Anadromous were
in other
other coastal
coastal drainages.
drainages.
Table10.
Table
10. Tagged
Taggedcoho
cohoreleased
releasedin
in Yaquina
YaquinaBay
Bayand
andocean
oceanby
by Oregon
0regonAqua-Foods
Aqua-Foods
and in
in Coos
Bay by
by Anadromous,
and
Coos Bay
Anadromous, Inc.
Inc. and
recoveredat
andrecovered
at Oregon
0regoncoastal
coastal sites
sites in
in
1984.
1
984.
Recover.y
Recovery site
site
H a t c h e r yrecoveries
re co ve ri e s
-Hatchery
Salmon
) a r m o nRiver
K lve r
Siletz
S i l e t z River
River
( A l s e aRiver)
F a l l Creek
Fall
C r e e k(Alsea
River)
(
C
o
q
u i ' l 1River)
ei v e r )
B a n d o(Coquille
n
Bandon
R
0regon
Oregon Aqua-Foods
Aqua-Foods
uregon qua-i-ooas
Yaquina Bay
Ocean
4
4
0
0
7
7
1
I
3
3
I1
0
0
0
.:
--
1
1
--
5,500
a
5
, 5 0 0a
Anadromous
Anadromous
Sp a w n i nq
Spawning
fish
fi sh surveys
su rve vs
Yaquina
Y a q u r nRiver
a lver
K
Beaver
BeaverCreek
Creek
W e s t011ala
West
0 l l a l a Creek
Creek
Cook Creek
Cook
Creek
0
0
0
0
11
1
1
1
1
0
0
/nacJromous
Coos Bay
0
0
0
0
0
0
1
1
I
1
1,300
1,300
0
0
0
0
0
0
a 5,800
a
51800adipose-marked
addpoeeatarkedcoho
eoho were
htt tags
were onlg
only recovered
from
weneexamined,
*orined, but
tage utene
reeooered from
5,500.
5, 5 0 0 .
T h e relatively
re l a ti ve l y large
The
Salmonon
River Hatc
Hatchery
l a rg e number
n u m berof
r ecover edat Salm
of strays
str ays recovered
River
her y
obablyrreflects
compared
to
other
coastal
hatcheries
probably
differences
in the
c o m p a r ed
to o
a tcher iespr
eflects differ
th e r co
a sta l h
ences in
g e o g r a ph i cpositioning
p o si ti o n i n g of
geographic
index
th e facilities
facilities rather
r ather than
o f the
than any
m easur able
indexof
anymeasurable
of
( N i c h o l a set
straying
s t r a y i n g at
a t each
a l . 11982).
982).
e a c hsite
s i t e (Nicholas
e t al.
-22-22-
Salmon
R i v e r Hatchery
H a t c h e r is
yi s
S a l m o River
n
located on
mainstem
located
on the
the main
stemaa short
sh or t distance
abovetidewater,
tidewater , while
Fall Creek
Cr eek
while Fall
.distanceabove
o
and
h
n d Siletz
Si l e tz hatcheries
h a tch e ri e sare
l o catedon
tr ibutar r iesmuch
m uchfurther
a re located
on tributaries
fur ther upstream.
upstr eam.
Distribution
Distribution
o
scales in
117 scales
Samplers
collected
co l l e cte d91
River ,117
Sa m p l e rs
9 1 coho
in the
the Salmon
Salm onRiver,
sc al es
co hosalmon
salm onscales
in
i n the
t h e Yaquina
Y a q u i n aRiver,
R i ve r, and
3 0 0 scales
in Coos
Baytributaries.
tr ibutar ies.
a n d 300
scalesin
CoosBay
An
An additional
additional
( Table11).
863
8 6 3 scales
Hatcher y(Table
River
s c a l e swere
w e resampled
sa mp l e at
da t Salmon
S a lmon
River Hatchery
11) .
o
Scale samples
Scale
were
to
collected in
in tributaries
tributaries after
1.985
be
samplescollected
after 1l January
January1985
assumed
to be
wereassumed
( N i c h o l a set
f r o m wild
r e s u l t s of
from
w i l d coho
c o h obased
b a s e don
t h e results
i n 1980
1 9 8 0(Nicholas
et
o n the
o f similar
s i m i l a r studies
s t u d i e sin
(N i ch o l a sand
al.
a
l . 1982)
1 9 8 2 )and
1 9 8 1(Nicholas
VanDyke
a n d1981
and Van
Dyke1982).
1982) .
o
T
a b l e11.
Table
1 1 . Source
S o u r c eof
o f coho
c o h osalmon
s a l m o nscales
s c a l e scollected
i n 1984-85.
1984-85.
c o l l e c t e din
Dates
Dates
o
o
Rivers:
R
iv e r s :
--Tdlfron
Salmon watershed
TL/8 to
L/28
11/8
watershed
to 1/28
Yaquina
Ya
q u i nawatershed
LLI5
L2/31
to
12/31
to
11/5
w a te rsh e d
L /1 to
to 1/31
1/31
1/1
L0/4 to
Coos watershed
to 12/31
Coos
watershed
LZ/3L
10/4
to 2/5
L l L to
2/5
1/1
Hatcheries:
Hatcheries:
-SaTffiTiver
Salmon River
a
Total
Total
1 0 /1 0to
to 12/31
l2/3L
10/10
Jacks
Jacks
91
91
87
B7
30
30
153
153
147
L47
863
863
a
Adults
Adults
le
le
Readable
Unreadable
Readab unreadab
2
2
0
0
1
1
7
7
9
9
88
88
75
75
29
29
144
L44
131
1
31
o
0
787
787
1
1
12
t2
0
0
2
2
7
7
76
76
a
a Only
20" De"e
were sanpled
sonzpledatat h.ateheries.
hatcheries.
OnLAcoho
aho salmon )> 20tt
ibuted
Scale
analysis
showed
that
hatcheryyand
coho salm
salmon
weree distr
distributed
Sc
al e a
th
at hatcher
and wild coho
onwer
n a l ysi s sh
owed
(Table12).
Hatcherystrays
strays
throughout
throughoutthe
Baysystems
12). Hatchery
the Yaquina
YaquinaBay
Bayand
andCoos
CoosBay
systems(Table
o
were
more
frequently
recovered
than wild coho
coho salmon
salmon in
Yaquina Bay
Bay
in the lower
lower Yaquina
w
e r em
o r efre
q u e n t'l yre
co ve redthan
acceler ated
watershed.
h a tch er yfish
fish recoveries
r ecover iesconsisted
consistedof
of accelerated
w
a t e r s h e d . Most
Mo stof
o f the
th e hatchery
than
Coos
Bay,
than
smolt
r e le a se s. In
s m o ' l treleases.
In C
salmonwere
wer emore
m or eabundant
abundant
o o sB
a y, wild coho
cohosalmon
o
hatchery
h a t c h e r yfish.
fi sh .
pr im ar ily recovered
r ecover edin
tr ibutar ies emptying
er npty i ng
Hatchery
H a tch e ryfish
in tributaries
fi sh were
wer eprimarily
iinto
n t o tidewater
t i d ew a te rin
i n Coos
C o o sBay.
B a y.
o
-23-23-
Table
T a b l e12.
1 2 . Classification
Yaquinaand
and
C ' l a s s i fc a t i o n of
o f coho
cohosalmon
scales collected
collected from
fr om the
the Yaquina
salm onscales
CoosBay
Coos
by
Baywatersheds
by area,
area, 1984.
watersheds
1984.
Yearling
No.
ffi.
Watershedarea
Watershed
area
Hatchery
Accelerated
r
No.
ft--
Wild
!l|ild
No.
T'il---T-
%
Total
Total
Y a q u i n aBay
Yaguina
Ba y
II
IIII
III
III
ItVV
Tidewater
10
Tidewater
10
Lower
L
o w e rBig
B i g Elk
E l k && Vaquina
Y a q u i n a 55
Upper
Yaquina
aquina
3
U
p p e rY
3
Elk
Upper
2
U
p p e rBig
B i g Elk
2
6
6
52.9
52.9
39.3
3
9.3
15.8
15.8
26.1
26.L
6
6
12
t2
13
13
15
15
17.7
1
7. 7
42.8
42.8
68.4
68.4
65.2
65.2
34
34
28
28
19
19
23
23
7.3
7.3
8.9
8
.9
0
0
0
0
0
0
0.0
0.0
0.0
0.0
0.0
0.0
24
24
101
101
113
113
57.1
5
7.1
92.7
92.7
91.1
91.1
42
42
109
109
124
L24
19.2
L9.2
13.5
13.5
38
38
0
0
36.6
36.6
0.0
0.0
46
46
238
238
44.2
44.2
86.5
86.5
104
104
275
275
29.4
29.4
17.9
17.9
15.8
15.8
8.7
8
.7
18
18
11
11
18
18
8
8
111
1
42.9
42.9
20
20
37
374
3
3
Coos
CoosBay
Bay
I
II
Ii
IIII
II
I
Tidewater
Tidewater
Millicoma
l 4 i l l i c o m aRiver
River
South
R i ve r
So
uthFork
F o rk Coos
C o o sRiver
T o t a l Yaquina
Total
Ya q u i n aBay
Bay
Total Coos
Total
CoosBay
Bay
a Five
(1.8%) tpne
32
The remaining
Anadromou8, Inc.
Ine. The
nematning 32
a
were classified
from Analnonoul"
?i,oe fish
elassi.fded fron
fi.eh (1.8%)
(11.7%)
as
either
hatchery
h.atehery
clas8ified
with
c,zy
certainty
sither
fish
(11.7%)
could
not
be
eould
be elassi,fied tith otg eefrainty
fnsh
or
or wild.
uyild.
Salmon
SalmonRiver
River Hatchery
Hatchery
Hatchery yindicated
indicated
River
River Hatcher
An al ysi sof
Salmon
Analysis
collected
o f scale
collected at Salmon
sca l e samples
sa mp l es
from OAFSs
YaquinaBay
Bay
hatcheryfish
fish from
0AF's Yaquina
that
that only
only about
about3%
3%were
wereaccelerated
acceleratedhatchery
(T a b l e13).
facility
f a c i l i t y (Table
1 3 ).
fish taken
takenat
at
1.0% of
1.0%
of the
Wild
!'|i l d coho
co hosalmon
com posed
the fish
salm oncomposed
Salmon
Sa l m o River
nRi ve r Hatchery.
H a tch e ry.
River
S a l m o River
n
Table
T a b l e13.
c o l l e c t e d at
a t Salmon
1 3 . Classification
C l a s s i f i c a t i o nof
s c a l e scollected
o f ccoho
o h osalmon
s a l m o nscales
Hatchery,
H a t c h e r y1984.
,1984.
Yearling
No.
756
756
Hatchery
Hatchery
Accelerated
-T'o:------T
Wild
t.li1d
No.
mffi-
No.
96.1
96.1
23
23
2.9
2.9
8
8
-24-
Total
Total
1.0
1.0
787
787
o
N u m b eof
r spawning
of
sp a w n i nadults
ga d u l ts
Number
o
T h earea-under-the-curve
a re a -u n d e r-th e -cu rve
estim atesof
the total
of the
total spawning
The
estimates
escapement
spawning
escapem ent
of
a d u l t collo
c o h osa
l mo ni in
ovide rough
n stre
a msur
veyswer
adult
salmon
stream
surveys
weree used
used to
to pr
provide
r oughestimates
estim atesof
of
sspawning
p a w n i ngsto
ck si
ze s ooff hhatchery
a tch er yand
stock
sizes
and wild
wild fish
fish in
in the Yaquina
Yaquina and
and Coos
Coos Ba
Bayy
O
w
a t e r s he d s. The
watersheds.
T h eestimates
pr edicatedon
e sti ma te sare
a r e predicated
the following
on the
followingassumptions:
assum ptions:1)
1)
t h e r e are
a r e 156
1 5 6miles
mi l e s of
o f spawning
sp a w ning
habitat in
Yaquina
in Yaquina
Riverand
there
habitat
River
and268
268miles
milesin
in the
the
(B e i d l e r and
C
o o sBay
B a yw
a te rsh e d(Beidler
( 2) the
a nd Nicke:lson
Coos
watershed
Nickelson 1980)
1980); ; (2)
the spawning
spawning density
density in
in
o
t h e surveys
s u r ve yswas
w a srepresentative
re p re se ri ta ti veof
population;and
( 3) fish
of the
the total
the
population;
total spawning
spawning
and(3)
fi s h
counted
in the
survey areas
areas were
counted in
the survey
were spawners
spawners rather
rather than
than migrants
migrants to
to upstream
upstream
s p a w n i nsites.
spawning
sgi t e s .
o
( 1 9 8 0 )describe
B e i d l e r and
N i c k e l s o n(1980)
a n dNickelson
Beidler
d e s c r i b eadditional
a d d i t i o n a lassumptions
assumptions
p
e r t a ' i n in gto
to ALJC
A U Ce
pertaining
estimates.
sti ma te s. The
estimatesderived
der ivedfrom
fr om AUC
The estimates
AUCdata
data are
ar e likely
like l y
m
a x i m asince
l n ce mo
si
st vi
o l a ti o n s of
the assumptions
assumptions
maximal
most
violations
of the
tend to over
overestimate
true
tend
estimatetr
ue
s p a w n i nstock
spawning
sg t o c ksizes.
sizes.
o
Ya
qu i n aBay.
Yaquina
B a y. A
sti ma ted754
adult coho
Ann e
estimated
754 adult
coho salmon
spawned in
23.1 miles
miles of
of
salmonspawned
in 23.1
ttributary
r i b u t a r y streams
stre a msin
i n Yaquina
Y a q u i n aRiver
pr io r to
River in
in 1984-85.
1984- 85. Of
these, 86%
prior
0f these,
86%spawned
spawned
1
January1985.
1 January
1985. The
The total
total estimated
of
was
5,090.
number
estimatednumber
of spawners
The
spawners
r.ras
5,090. The
o
spawning
sto ck was
w a scomposed
co mp o seof
spawning
stock
odf 3,181
3,l8L hatchery
hatcher yadults
adultsand
and1,909
1,909wild
wild adults.
adult s .
T h e r e f o r e ,the
populationin
th e total
to ta l adult
a d u l t spawning
Therefore,
population
River consisted
sp awning
in the
the Yaquina
YaguinaRiver
consis ted
of
621"hatchery
production. Most
hatcheryfish
of 62%
fish and
and38%
38%from
from natural
natura'lproduction.
Mostof
the hatchery
hatchery
of the
o
( 2 , 17 3 ) w
ffish
i s h (2,173)
e re stra
ys frcrn
eleaseswhile
were
strays
from acceler
accelerated
smolt rreleases
while the rremaining
atedsmolt
em aini ng
p r e su ma b lo
yri g i n a te d fro
ffish
i s h presumably
esmoltsliberated
originated
from
presmolts
1982 that str
strayed
m pr
liber ated in
in 1982
ayed
n
u
p s t r e a (Jonasson
n(Jo n a sso1983),
1 9 8 3 ),strays
upstren
stra ysfrom
fr omnearby
near bystreams,
r etur ns from
str eam s,or
or returns
fr om fish
fish
O
l i b e r a t e d in
i n the
Y a q u i n River.
aR i v e r .
liberated
t h e Yaquina
A
total of
1.08,651
of 108,651
0regonAqua-Foods
A total
coho
in
cohoreturned
returnedto
to Oregon
Aqua-Foods
in 1984.
1984. The
The
e s t i m a t edstraying
stra yi n g rate
ra te from
estimated
was 2.0%
2.0% in
fro m accelerated
r eleaseswas
in the
the
acceler atedsmolt
smolt releases
o
o
-25-25-
Ya q u i naRiver.
Yaquina
R i ve r.
( 1* in
T h estraying
The
was <1%
River based
stra yi n g rate
r ate of OAF
OAFcoho
in Salmon
ba s edon
cohowas
Salm onRiver
on
(1985)
d a t a summarized
s u mma ri zeby
data
bdy Beidler
B e i d l e r (1985).
Coos
C o o sBay.
B a y. An
A n estimated
in
942adult
e sti ma te d942
adult coho
cohosalmon
16.2miles
m iles
salmonspawned
spawned
in 16.2
surveyedin
surveyed
in the
the Coos
CoosBay
Baywatershed
in 1984-85.
1984-85. Approximately
watershedin
Approximately63%
63%spawned
spawned
prior
prior to
to 11 January
January1985.
1985. The
Thetotal
total estimated
of
adults
estimatednumber
number
was
of spawning
spawning
adults was
15,581.
1 5 , 5 8 1 . The
p o p u l ationcontained
T h espawning
sp a w n i n g
population
343 adults
from
Anadromous,
1,867
contained343
1,867
adults fr
om Anadr
omous
,
( 8 6 %wild
u
n c l a s s i ife d adults,
a d u l t s , and
1 3 , 3 7 1wild
unclassified
a n d13,371
w i . | dadults
a d u l t s(86%
w ' i ' l dfish).
f ish).
No
N o strays
from
s t r a y s from
acceleratedsmolt
smolt releases
accelerated
releases at
Yaquina Bay
Bay were
were recovered
recovered in
in Coos
Coos Bay
Bay
at Yaquina
tributaries.
tributaries.
P o s s i b l esources
(1) h
Possible
hatchery
s o u r c e sof
o f unclassified
u n c l a s s i f i e dadults
a d u l t s include
i n c l u d e(1)
atchery
( 2) wild
s t r a y s fro
m another
patt er ns ;
a n o th e rriver
ri ve r basin;
gr owthpatterns;
strays
from
b asint (2)
wild fish
fish with
with atypical
atyp' icalgrowth
(3)
(4) presmolts
patterns, and
presmoltsor
growthpatterns,
(3) strays
strays from
from Anadromous
Anadromous with
with atypical
atypical growth
and(4)
or
p rojects.
s m o l t sreleased
re l e a se dfrom
smolts
projects.
fro mSTEP
STEP
An a d ro mo u
resp o rte d5,923
ling smolt
5 ,9 23 adult
Anadromous
reported
1984 fr
from
yearling
adult coho
r etur nedin 1984
cohoreturned
om year
s m o'l t
r e l e a s e sat
releases
a t their
th e i r Coos
C o o sBay
B a yfacility.
facility.
per centage
Thepercentage
The
of
wild adults
at the
the
of wild
adults at
f a c i l i t y is
facility
i s unknown.
H o w e v e rassuming
u n k n o w n .However,
tgh a t few
wild
entered
a, s s u m j nthat
f e w 'if
i f any
i l d fish
fish e
he
a n yw
n t e r e dtthe
h a t c h e ry,the
th e estimated
e sti ma te dstraying
hatchery,
watershed
stra ying rate
r ate was
wasabout
5.5g'in
in the Coos
Baywater
about5.5%
CoosBay
s hed
from
f r o m scale
s ca l e sampling
sa mpi n
l g data.
d a ta . The
Thestraying
r ate is
str aying rate
is based
basedon
on the
the assumption
assum ptiothat
that
n
n o n eof
th e unclassified
o f the
u n cl a ssi fi e dadults
none
hatchery.
a d ults originated
Anadr omous
or iginatedfrom
fr omthe
the Anadromous
hatcher y .
DISCUSSION
DISCUSS
ION
Sp
a w n i nstocks
g
sto cks of
o f fall
fa l l chinook
chinookand
Spawning
andcoho
cohosalmon
lar ger in
in 1984
1984
salm onwere
wer emuch
muchlarger
ccompared
o m p a reto
d 1
9 8 3w
h e naa co
to
1983
when
combination
of increased
natural
mortality
from
mbinationof
incr easednatur
al mor
tality fr
om the
e
f f e c t s of
E l Nino
N i n o and
effects
fisheries
o f El
a n d high
h i g h exploitation
exp' loitationrates
r ates by
by ocean
oceanfisher
ies decimated
decimated
1QOA
TL.
J.L.. .....11.
I."c
I9UI e
t#I
h e slV.I¼
J.otJ.
t ocks (McGi
1 9 8 4 ). T
incr eased
liltheIll(itdtU
eLdpelllt1ll.
ldryly
rui
escapemWø.S
ent
was1.......1..
lar
gelyI.Fit
the
r esul t uof
.0
L.
placed on
unprecedented
restrictions placed
unprecedented
restrictions
harvest of
on the harvest
of coho
in the ocean
coho in
oceanand
and
r e d u c e dffishing
(S.E.
i s h i n g effort
e f f o r t for
f o r chinook
c h i n o o ksalmon
reduced
in
i n the
t h e northern
n o r t h e r nfisheries
salmon
f i s h e r i e s(S.E.
- 26-26-
I
o
salmon
in
A l a s k a ,British
in 1984
1984was
Alaska,
Bri ti sh Columbia,
Washington) .Chum
Chum
salm onescapement
escapement
w as
C o l u mb i aand
a
, n dWashington).
O
per i od
to
to stock
in the
the period
sslightly
l i g h t l y below
b e l o w1983,
1 9 8 3 ,but
b u t still
healthy compared
compar ed
stock sizes
sti l l healthy
sizes in
1955-70.
1955-70.
p e a kco
T h e average
gest rrecorded
ecor ded
The
count
off adult
fall chinook
chinook was
was the'
the lar
largest
a ve ra g epeak
unto
adult fall
o
pr eviousrecord-high
r ecor d- highcount
8 1..5
the
ssince
i n c e surveys
s u rve ysbegan
1 9 5 0 ,exceeding
the previous
countof
of 81.5
b e g a nin
i n 1950,
exceeding
a d u l t s / mi 'l eset
fish/m ile.
adults/mile
se t in
i n 1979
1 9 7 9by
b y 77 fish/mile.
jacks rose
The count
r ose from
2.5
The
count of
of jacks
fr om2.5
j a c k s / m i l ein
j a c k s / m i l ein
T h i s may
m a yindicate
i n d i c a t ean
a nimproved
improved
jacks/mile
i n 1983
i n 1984.
1 9 8 4 . This
1 9 8 3to
t o 8.0
8 . 0 jacks/mile
o
chinook
ssurvival
u r v i v a l rate
ra te for
fo r 1982-brood
fall
salm on.
1 9 8 2 -b ro ofall
d
chinooksalmon.
p e a kco
in 1984
ar ked
T
The
h e average
count
off 16.8
16.8 adult
coho/mile
1984 was
was a
am
marked
a ve ra g epeak
adu' lt coho/m
i' tein
unto
Howeverthe
the
, actual
i m p r o v e me n
r ecor dedin
in 1983.
1983. However,
actu al
improvement
over
6.7
o tve r the
th e 6
.7 adults/mile
a d u l ts/m ilerecorded
o
total
reflected in
in the
the average
average
strength
was
total
strength of
of the
the escapement
wasmore
nore accurately
accuratelyreflected
escapement
AUCdata.
data.
count
derived
count of
derived from
from AUC
of spawners
spawners
this comparison,
comparison, the
the average
In this
average
45
1983to
to 45
in 1983
index
from 14
L4 adults/mile
adults/mile in
index count
in standard
increasedfrom
count in
standardsurveys
surveysincreased
o
'indexcounts
in 1984
1.984
was
was
adults/mile in
The difference
betweenindex
countsin
adults/mile
in 1984.
1984, The
difference between
per iod due
p r i m a r i l y the
p rotr acted spawning
oughtin
in
due to
to aa dr
primarily
drought
re su l t of
spawningperiod
th e result
o f the
th e protracted
un ti l
that delayed
delayedspawning
spawning
early
of
until
fish that
J a nu a ryand
co mp' lem ent
of wild
wild fish
e a r l y January
a n dstrong
stro n gcomplement
o
peakcounts
late November
November
in late
occurredin
late January
Most peak
countsoccurred
late
Januaryand
February. Most
andearly
early February.
peak counts
good example
why peak
may not
not be
be
counts may
December.This
This serves
and
and December.
serves as
as aa good
exampleof why
( Beidlerand
19 80) .
p ro p o rti o n a lto
Nickelson
consistently
1980).
andNickelson
total run
r un size
s' ize(Beidler
to the
the total
c o n s i s t en tl yproportional
o
surveys
and nonstandard
The overall average
total count
count in
nonstandard surveys
The
in standard
standardand
averagetotal
escapement
to an
an optimum
escapem ent
optimum
This is
is equivalent
combined
4 2 adults/mile.
equivalentto
c o m b i n ewas
w
d a s42
a d u l ts/mi l e . This
( ODFII
Plan(ODFW
1982 ) .
Management
Salm on
objective
Management
Plan
1982).
the Coho
i n the
CohoSalmon
o
b j e c t i v e of
o f 200,000
2 0 0 ,0 0 0adults
a d u l ts in
o
primarily achieved
result of
However,
goal
was primarily
goa'lwas
as aa result
of severe
severe
achievedas
However,the
the escapement
escapement
ather than
ies rrather
tr
oll fisher
restrictions
onn o
ocean
sportt and
and com
commercial
troll
fisheries
than
m er cial
r e s t r i c t i on s imposed
i mp o se do
ce a nspor
pr oductionby
stocks.
by Oregon
0r egoncoastal
coastalstocks.
a
r e f l e c ti o n of
n a tur al production
a reflection
o f increased
i n cre a se dnatural
o
-27-27-
private hatcheries
Stray
hatcheriesand
andreturns
returns from
fromoffstation
from private
offstation
Stray coho
cohosalmon
salmonfrom
peakcounts
p
r e s m o ltand
p r obablyinfluenced
presmolt
the peak
andestimates
estim ates
re l e a se sprobably
influencedthe
countsand
a n d smolt
smo l t releases
ar e
wher eindex
indexstreams
str eamsare
off total
where
o
t o t a l spawner
dr e n si ti e s in
i n certain
water sheds
sp a w n edensities
cer tain watersheds
ham per s
which
hatcher yfish
fish is
is unknown
whichhampers
situated
T h edegree
d e g re eof
i n fl u enceby
by hatchery
unknown
s i t u a t e d . The
o f influence
pr oductionin
any
in coastal
r iver s.
of natural
natur al production
coastalrivers
a n y straightforward
s t r a i g h tfo rw a rdanalysis
a n a l ysi sof
Stray
Str
ay
S
private hatcheries
generally overlap
tenpora'l
spawners
from
hatcheries generally
the spatial
andtemporal
from private
overlap the
spatial and
spav{ners
( N i c h o l a set
1 9 8 2 ;Nicholas
Nicholas
t h e Yaquina
Yaquina
R i v e r (Nicholas
a l . 1982,
distribution
River
d
i s t r i b u t i o n of
f i s h in
i n the
e t al
o f wild
w i l d fish
T h eaverage
density in
hatcher y- influenc ed
density
and
Va nDyke
Dyke1982)
total spawning
in hatchery-influenced
a n dVan
1 9 8 2 ). The
a ve ragetotal
spawning
S
to be
be
believedto
streams was
16%larger
larger than
than the
the average
in streams
streamsbelieved
streams
was16%
averageobtained
obtainedin
w as
of
r e s t r i c t ed to
This suggests
the escapement
of wild
wild stocks
stocks was
restricted
to wild
w i l d spawners
sp a w n e rs.This
suggeststhe
escapem ent
42 adults/mile
adults/mile
somewhat
smaller
of 42
than indicated
indicated by
by the
the coastal
coastal average
averagecount
countof
somewhat
smaller than
S
Other nonrelated
nonrelatedfactors
biasedthe
factors may
mayhave
havebiased
the
when
are combined
combined. 0ther
whenthe
the strata
strata are
rresults,
e s u l t s ; ii .ee ., streams
possiblymore
stre a msclassed
cl a sse das
as hatchery
hatcher yinfluenced
influencedare
mor e
ar e possibly
,
p
r o d u c t ivethan
stre a msclassed
productive
th a n streams
cl a ssedas
as containing
containingwild
wi' ld stock
stock alone
alone.
S
The
in 1983
1983. T
he
thanin
T i llam ookBay
19%smaller
smallerthan
The
T h echum
ru n at
Baywas
was19%
ch u msalmon
sa l mo nrun
a t Tillamook
in
declined in
Kilchis River,
River , also
also declined
number
n u m b eof
tra p p e din
in Coal
CoalCreek,
Cr eek,Kilchis
or f chum
ch u msalmon
sa l mo ntrapped
collected
No scale
sampleswere
werecollected
1983. No
scale samples
1984
to
1984compared
numbertrapped
trappedin
in 1983.
compared
to the
the number
p re cl u d e sany
the three
thr ee
r elative strength
of the
in
the relative
str engthof
i n 1984
1 9 8 4which
a nalysisof
of the
wh i chprecludes
a n y analysis
(a g e s3
llam ookBay
p r i m a r yage
primary
3-5)
normally
spawn in
in Ti'
Tillamook
Bay
-5 ) that nor
m allyspawn
a g e classes
cl a sse s(ages
tributaries.
tributaries.
pg o p u l a t i o nfollows
the
f o l l o w s the
loss o
The
off the
t h e loss
t h e spawning
T h edecline
d e c l ' i n ein
i n the
s p a w n i npopulation
brood
poor recruitment
1980brood
year in
the 1979
1979and
and1980
dominant
fromthe
recruitmentfrom
dominantbrood
in 1978
1978and
andpoor
broodyear
yyears
e a r s (McGie
( McGi 1984).
e1 9 8 4 ).
percentageof
The percentage
of OAF
OAF strays at
Salmon River
River Hatchery
Hatchery dramatical'ly
dramatically
at Sa'lmon
The
The small
of
stray s
number
of strays
in 1984.
sm all number
2.9%in
1984. The
declined
d e c l i n e dfrom
i n 1983
1 9 8 3to
to only
frcrn54.7%
5 4 .7 %in
only 2.9%
OAF
rates and
returns of
of OAF
andreturns
is
straying rates
reducedstraying
combinationof reduced
is attributed to aa combination
-28-28-
I
o
fish
fish and
increasedreturns
returns of
Hatcheryfish.
andincreased
of Salmon
SalmonRiver
River Hatchery
fish.
o
In
In 1983,
1983, the
the adult
adu'lt
' while
return to
Hatcherywas
return
to
to Salmon
SalmonRiver
River Hatchery
1984
the
was535
535compared
compared
to 1,870
1rg70in
in 1984
w h i l ethe
( Beidler1985).
number
n u m b eof
d e cl i n e dfrom
fr om 293
293to
to 54
or f OAF
OA Fstrays
stra ys declined
54 (Beidler
1985) .
'in Yaquina
Hatcherycoho
Hatchery
Yaquina River
River in
621.of the
the spawning
in
cohocomprised
comprised62%
spawningstock
stock in
o
( 2,173 adults)
1984.
1
9 8 4 . The
om
originated
from
Th emajority
ma j o ri ty of
th e hatchery
h a tcher yfish
fish (2,173
adults) or
o f the
iginated fr
The estimated
acceleratedsmolt
rate
accelerated
smolt releases
releasesby
by Oregon
0regonAqua-Foods.
Aqua-Foods.The
estimatedstraying
straying rate
gr oupof
was
r etur ningto
Yaquina
Bay.
T he
w a s2.0%
2 . 0 * from
fro m the
th e accelerated
to Yaquina
Bay. The
of adults
adultsreturning
a cce l e ra te dgroup
o
p
ercentage
percentage
off w
wild
fish
spawning
in Yaquina
Yaquina River
River has
has var
varied
from
13% to
to 38ff
38%
sh sp
ied fr
om 131
o
i l d fi
a w ningin
(Tab1e
p r o p o r t i o nof
due
14).
ssince
i n c e 1981
1 9 8 1(Table
T h eincreased
f i s h in
i n 1984
1 9 8 4was
w a sdue
1 4 ) . The
i n c r e a s e dproportion
o f wild
w i l d fish
t o a strong
tu rn o
etur n of
to
return
off w
wild
stocks and
and compar
comparatively
poor rreturn
of hatcher
hatcheryy
s t r o n g re
i l d stocks
ativelypoor
o
Yaqui na
fish
in
f i s h to
t o Oregon
The number
hatcher yfish
fish spawning
in Yaquina
0re g o nAqua-Foods.
A q u a -F o o d s. The
num berof hatchery
spawning
River has
remainedremarkably
for the
the
River
has remained
remarkablyconstant
1981after
after adjusting
adjusting for
constant since
since 1981
( T a b l e14).
effects
e f f e c t s of
o f El
E l Nino
N i n oin
i n 1983
1 9 8 3(Table
la).
o
P o p u l a ti o nestimates
in
Table
T
a b l e14.
1 4. Population
hatcher yand
wild adult
adult coho
cohosalmon
salmonin
andwild
e sti ma tesof hatchery
Ya q u i n aRiver,
Yaquina
Ri ve r, 1981-84.
1 9 8 1 -8 4 .
Wild
t'
{ ild adults
adults
Hatchery adults
a
S
o
Year
Year
No.
mo;-----T
No.
1981
1981
1982
1982
1983a
19834
1984
1984
3,158
3,158
3,380
3 ,3 8 0
1,461
1,461
3,181
3,191
1,102
1
,102
959
959
210
210
1,909
1
,909
74
74
78
78
87
87
62
62
Total
Total
26
26
22
22
13
13
38
38
4,260
4,260
4,339
4,339
1,671
L,67L
5,090
5,o9o
a
(PWC
effects of
from the
EL Nina
Nino (PMFC
the effeets
of El
a Wfinates
Estimates adjusted
adjusted fon
for a 58%
mortality fron
58%nortalitg
wild
adults.
t'tould
t'ti,Ld
adulte.
would
be
3,500
hatchery
and
500
L984
hatehem1
500
1984)
3"500
@rd
O
Bay
The estimated
Coos Bay
The
in tributaries
tributaries of
of Coos
numberof
of spawning
spawningcoho
coho in
estimatednumber
per centage
The percentage
of
fis h
increased
of wild
wild fish
fro m 4,173
4 ,1 7 3in
i n 1983
1 9 8 3to
to 15,581
15,581in
in 1984.
1984. The
i n c r e a s edfrom
o
U
-29-29-
p o p u l a ti o nin
(8 6 % )was
( Mc Gi e
i n the
t h e population
i n 1984
1 9 8 4(86%)
in
in
in 1983
wasidentical
identical to
to that
that obtained
1983(McGie
obta' ined
pr ivate hatchery
1984).
1 9 8 4 ) . Th
ra te by
stra yi n g rate
b y private
Thee straying
hatcher yfish
fish returning
r etur ningto
to Anadromous
Anadr omous
dec'fined from
from about
about30%
30?lin
in 1983
1983to
declined
1984,although
to 5.5%
5,5%in
in 1984,
a'lthoughthe
the estimates
estimatesin
in
( Mc Gi e
1 9 8 3w
l i mi te d scale
e r ebased
b a se don
o n limited
1983
were
fish
scale sampling
data(McGie
sam plingand
andspawning
spawning
fish survey
sur veydata
populationestimates
1984).
1984). A
A major
major difference
difference between
betweenthe
the population
in 1983
1983and
1984
estimatesin
and1984
(12%jof
is that
that 1,867
1,867 (12%)
is
of the
the spawning
spawningfish
fish were
wereunclassified
unclassified and
mayhave
have
andmay
patterns or
growthpatterns
originated
from hatchery
hatcheryor
originated from
or wild
wild smolts
smolts with
with atypical
atypica'lgrowth
or some
some
pur posesof
ccombination
o m b i n a ti o of
no f both
assumed that
b o th stocks.
For the
sto cks. For
the purposes
this analysis,
that
of this
analysis, II assumed
pr ogr ams
a l ' l unclassified
all
programs
by
u n c la ssi fi e dfish
fi sh originated
by
o ri g i n a ted from
fr om hatchery
hatcher yor
or STEP-related
STEP- r elated
0DFHand
ODFW
not atypical
strays.
andwere
werenot
Anadromous
atypical Anadromous
strays.
If
If the
the unclassified
unclassified fish
fish were
were
all
a ' l l assigned
a s s ig n e dto
to Anadromous,
A n a d ro mo uthe
s,e straying
th
r ate would
incr easefrom
fr om5.5%
5.5%to
to
str aying rate
wouldincrease
probablylies
27.2%.
27.2%. The
The true
true rate
rate probably
lies somewhere
between
the
between
the two
twoextremes.
somewhere
extremes.
p o ssi b l elong-term
T h e possible
l o n g -te rmaffects
The
hatcher yfish
fish strays
the wild
wild
a ffects of
of hatchery
str ays on
on the
potential
genetic theories
stocks
are unknown;
however,contemporary
stocks are
genetic
unknown;however,
theories suggest
contemporary
suggestaa potential
l o s s in
geneflow
i n the
th e "productivity"
loss
m ayresult
r esult if
if gene
flow continually
continu al l y
o f wild
wild stocks
stocksmay
" p ro d u cti vi ty" of
occurs
o c c u r sbetween
b e tw e e n
hatchery
h a tch e ryand
Puget Sound,
stocks
Sound,Washington,
W ashington,
a n dwild
w ild stocks.
stocks. Puget
stocks
private hatchery
productionof
large segment
comprise
of
compriseaa large
segment
of the
the private
hatcheryproduction
of coho
cohosalmon.
salmon.
(marked)Oregon
Thesestocks
lineage (marked)
These
outcrossed with known
known lineage
Oregon stocks
stocks
stocks are
are being
being outcrossed
p ri va te hatcheries
gam etes
rreturning
e t u r n i n g to
collected
to the
th e private
h a tcher iesor
or with
with male
malegametes
collectedwithin
within
p
potential genetic
genetic
other
o t h e r ODFW
Outcrossing
0 D F lprograms.
'l ro g ra ms. 0
u tcro ssingshould
help ease
the potential
shouldhelp
easethe
private hatchery
effects
effects of
of private
hatcheryfish
fish strays
0regoncoastal
stocks.
strays on
on Oregon
coasta'lstocks.
.1
-30-30-
.1
po
REF ERENCE S
REFERENCES
o
i v ate
gr
oundsampling
Beidler,
Be
i d l e r , W.M.
ground
evaluate str
straying
of pr
private
W.M. 1
1985.
9 8 5 . Spawning
S p a w n i ng
sam plingto evaluate
aying of
'in 1984.
hatchery
hatchery coho
River
to the
the Salmon
River basin
basin in
0regon
coho salmon
salmonto
Sa'lmon
1984. Oregon
D e pa rtme nof
Por tland,OR,
F i sh and
manuscr ipt,Portland,
0R,
Department
manuscript,
a n dWildlife
tl i ldlife unpublished
otf Fish
unpublished
o
USA.
U SA .
B e i d l e r , W.M.
W . M and
.a n dI.E.
T . E . Nickelson.
N i c k e l s o n . 1980.
0regon
Beidler,
1 9 8 0 . An
A n evaluation
o f the
t h e Oregon
e v a l u a t i o nof
t.| ildlife standard
D e p a rtme nof
fish survey
for
Department
fish
for
F i sh and
spawning
sur veysystem
system
otf Fish
a n dWildlife
standar dspawning
o
D e par tment
Infor mationReports
Re por ts
coho
of Fish
c o hosalmon.
Ore g o nDepartment
Fish and
l,{ ildlife, Information
sa l mo n . Oregon
andWildlife,
((Fish)
Fish) 8
80-9,
P o r t l a n d ,OR,
USA.
0 - 9 , Portland,
0 R , USA.
Berry,
B e r r y , R.L.
R .L .
o
1975.
surveys
1974.
L974.
L g 7 5 . Spawning
in coastal
water sheds,
S p a w n i nsalmon
salmon
g
sur veysin
coastalwatersheds,
( Fish)75-4,
75- 4,
D e p a rtme nof
Repor ts(Fish)
Oregon
0 r e g o nDepartment
F i sh and
andWildlife,
Hildlife, Information
Infor mationReports
otf Fish
Po
r tl a n d ,OR,
Portland,
0 R , USA.
USA.
Comission
Fish C
Cleaver,
F . C . 1951.
F i s h e r i e sstatistics
o f Oregon.
0 r e g o n . Fish
o m r n i s s iof
o fn
C
l e a v e r ,F.C.
1 9 5 1 . Fisheries
s t a t i s t i c s of
o
Por tland,OR,
USA.
Oregon,
O r e g o n Contribution
,C o n tri b u ti o nNo.
N o . 16,
16, Portland,
0R,USA.
Cummings,
E.
C u n m i n gs,
E.
' in
L976.
surveys
1976.
water sheds,
1977.
1 9 7 7 . Spawning
S p a w n i nfish
fish
g
sur veysin coastal
coastalwatersheds,
Oregon
Report,
ior tland,
D e p a rtme nof
F i sh and
Fish Management
Management
Repor t,Portland,
0 r e g o nDepartment
andWildlife,
l.|ildlife, Fish
otf Fish
o
OR,
0R,USA.
usA.
Jonasson,
J o n a s s onB.
,.
B
pr ivate hatchery
hatcher y
movement and
distr ibution of
of private
1983.
1 9 8 3 . Upstream
U p stre a m
movement
and distribution
p
r o du ce dcoho
YaquinaRiver
River tributaries.
tr ibutar ies.
produced
into Yaquina
co h osalmon
sa l mo nsmolts
smoltsinto
o
Oregon
0r egon
( Fish)83-13,
Repor ts(Fish)
83- 13,
Department
D e pa rtme nof
t{i 1d1ife, Information
Infor m ationReports
F i sh and
a n dWildlife,
otf Fish
Port'land, OR,
Portland,
0R,USA.
USA.
surveys
and straying
str aying of
of
McGie,
I t c G i e ,A.M.
spawning
sur veysand
A.M. 1984.
1 9 8 4 . Oregon
Ore g o ncoastal
co astal salmon
salm onspawning
o
private
1983. Oregon
bays,1983.
Oregon
private hatchery
Yaquinaand
andCoos
Coosbays,
hatcherycoho
cohosalmon
salmonfrom
from Yaquina
P o r t l a n d ,OR,
0R,
Department
D i v i s i o nReport,
R e p o r t ,Portland,
D
e p a r t m e nof
F i s h Division
F i s h and
l , | i l d l i f e , Fish
o tf Fish
a n dWildlife,
USA.
USA.
o
o
-31-31-
Nicholas,
N
i c h o l a s,J.W.
L . Van
V a nDyke.
D yke. 1982.
1982.
J.W. and
a n dL.
Straying
Str aying of
of adult
adult coho
and
salmonto
to and
cohosalmon
private hatchery
frorn aa private
from
hatcheryat
YaquinaBay,
Bay, Oregon.
Oregon Department
of
at Yaquina
Oregon. 0regon
Department
of
( F i s h ) 82-10,
F i s h and
a n dWildlife,
W i l d l i f e , Information
I n f o r m a t i o nReports
Fish
R e p o r t s(Fish)
P o r t ' l a n dOR,
0, R ,USA.
USA.
8 2 - 1 0 ,Portland,
N i c h o l a s ,J.W.,
J . W . , L.
Nicholas,
L . Van
V a nDyke,
D y k e ,and
Straying
R . C .Buckman.
B u c k m a n1982.
1
. 982. S
by
a n dR.C.
t r a y i n gby
hatchery-rearedcoho
hatchery-reared
releasedin
in Yaquina
YaquinaBay,
Bay, Oregon.
0regon
cohosalmon
salmonreleased
0regon. Oregon
D
e pa rtme nof
( Fish) 82-6,
Department
F i sh and
otf Fish
a n dWildlife,
l ,l ildlife, Information
Infor mationReports
Repor ts(Fish)
82- 6,
P
o r tl a n d ,OR,
Portland,
0 R , USA.
USA.
0 r e g o nDepartment
D e p a rtme nof
F i sh and
Oregon
h{ ildlife.
otf Fish
a n dWildlife.
p' lanfor
1982.
L982. Comprehensive
for
plan
Com pr ehensive
productionand
management
trout:
production
of
salmon
and management
Oregon'sanadromous
anadromous
of Oregon's
salmonand
andtrout:
II.
II.
Part
Part
p l a n , Portland,
C o h osalmon
P o r t l a n d ,OR,
Coho
s a l m o nplan,
0 R , USA.
USA.
Pa c i f i c Fishery
Pacific
Council.
F i sh e ryManagement
ocean
F l a n a g e me
1984. AA review
r eviewof
of the
the 1983
1.983
oceansalmon
sa l m on
Cnot uncil. 1984.
goalsfor
fisheries and
fisheries
goals
andstatus
management
for the
the 1983
1983salmon
status of
of stocks
stocks and
andmanagement
salmon
Por t' land,
b{ ashington,
season
Portland,
s e aso noff
o ff the
th e coasts
co a stsof
o f California,
Califor nia, Oregon,
0r egon,and
andWashington,
OR,
O R,USA.
USA.
Sams,R.D.
Sa m s ,*; 0 .
1980.
salmon
1 9 8 0 . Chum
Chum
eggcollection.
sa l monegg
collection.
Oregon
of
Depar tment
of Fish
Fish and
and
0r egonDepartment
Wildlife,
Regional
Contract
Final
! ' I i ld l i fe , Pacific
P a ci fi c Northwest
N o rth west
RegionalCommission
10790049,
Fi nal
Conr mission
Contr act10790049,
P o rtl a n d ,OR,
Report,
R e po rt,Portland,
0 R ,USA.
U SA.
t l i l l i s , R.A.
Willis,
The
death
R.A . 1954.
1954. T
h e length
l e n g th of time
befor e d
eath
time that silver
silver salmon
salmonspent
spent before
th e spawning
t,{ ilsonRiver,in
Fi s h
onn the
Spr ingCreek,
River ,in 1951-52.
1951- 52. Fish
o
sp a w n i n grounds
g ro u n d sat
at Spring
Cr eek,Wilson
Commission
Oregon
Briefs
C
o r n n i ssi oof
re g o nResearch
R e sear ch
Br iefs 5:27-31.
5:27- 31.
onf 0
.
-32-32-
.1
o
Appendix
AppendixAA
o
Standar and
dandNonstandard
Peak
in
Pe a kCounts
F a l l Chinook
in Standard
Nonstandar d
C o u n tsof
o f Fall
C hinookSalmon
Salm on
Distr ict and
Index
Streams
Stratified
In d e x S
tra t'i fied by
by Fishery
Fisher yDistrict
River Basins
Basins
tre a msS
andRiver
o
AppendixTables
Tables
Explanation
in
E
xp l a n a ti onof
in Appendix
of Columns
Columns
No.
N o . Sur.--the
i n d i vidual surveys
the strata.
Su r .--th e number
n u mb eof
or f individual
includedin
in the
str ata.
sur veysincluded
o
Miles--miles
M i l e s - - m i l e ssurveyed
t h e strata.
s u r v e y ein
di n the
strata.
Times
within
the strata.
T i m e sSur.--number
m ade
str ata.
S u r.--n u mb eof
or f actual
a ctu a l surveys
s ur veysmade
within the
o
t h estrata.
strata.
Total
T o t a l Miles--cumulative
M ' i l e s - - c u m u l a t itotal
vt oet a l miles
m i l e ssurveyed
s u r v e y ewithin
dw i t h i nthe
' individualsurveys
For
F o r multiple
m u l ti p l e surveys,
i t is
i s the
the sum
sumof
the individual
sur veys
su rve ys,it
of the
times
times the
the frequency
frequencysurveyed.
surveyed.
PeakCounts
Peak
Counts
o
givensurvey.
survey.
1984
combined
live
1984Peak--maximum
Peak--maximum
l'ive and
anddead
deadsalmon
salmonseen
seenon
onaa given
combined
Per
as
P e r Mile--peak
M i l e --p e a kcount
fish/m ile count.
count.
co u n texpressed
e xp re ssed
as aa fish/mile
peakcount
Date--date
Date--dateof
wasobserved.
observed.
the survey
whenthe
the peak
countwas
of the
surveywhen
o
pr eviousyear.
year .
the previous
dur ingthe
1983
Pe ak--p e acount
k u n t obtained
in the
the survey
sur veyduring
1
9 8 3Peak--peak
co
o b ta i n e din
(A U C )
Estimated
E
s t i m a t e dRun
R u nSize
S i ze (AUC)
o
(AUCestimates
estimates
curve(AIJC
Sur.--the number
curve
Sur.--the
for area-under-the
numberof
usedfor
area-under-the
of surveys
surveysused
within
th e strata.
w i t h i n the
stra ta .
in aa given
Run
Size--the
estimated
number of salmon
spawned in
given
R
u nS
salm onthat spawned
i z e--th e total
to ta l e
sti ma te dnumber
survey.
s u r ve y.
o
in a
spawned
Per
Mile--the
total
estimated
number of fish/m
fish/mile
that spawned
in
a given
given
ile that
P
er M
i l e --th e to
ta l e
sti rn a te dnumber
strata.
s t r a ta .
o
o
-33-33-
-|{
nz
d<.
<aF U
H ovl
(J
d
(t < z
la l - O
UI t n z
i
I
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lrl
H
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31 11/ 1/8k
31
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280 280 11/ 1/.3k
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1.3
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Appendix B
Appendix
B
o
o
in Standard
Standard
Peak
Density
in
EstimatedSpawning
Densityof
Salmon
PeakCounts
andEstimated
Spawning
of Coho
CohoSalmon
Countsand
River
Distr r ict and
andRiver
and
Nonstandard
Index
In d e x Streams
by Fishery
Fisher yDistrict
o n sta n d a rd
S tream sStratified
Str atified by
a
n dN
B as i ns
ns
Basi
Tables
Explanation
of
in
Tables
in Appendix
Appendix
E xp 'l a n a ti on
of Columns
Columns
o
No.
in the
the strata.
str ata.
N o . Sur.--the
or f individual
i n d i vi dual surveys
sur veysincluded
includedin
S u r .--th e number
n u mb eof
Miles--miles
M i l e s - - mi l e ssurveyed
i n the
th e strata.
str ata.
su rve ye din
Time
within
m ade
within the
the strata.
T i m eSur.--number
a ctu a l surveys
str ata.
S u r .--n u mb eof
or f actual
sur veysmade
o
o
r in the
the strata.
Total Miles--cumulative total miles surveyed within
str ata.
'is the
For
the individual
ind' ividualsurveys
sur veys
F o r multiple
i t is
the sum
sumof
of the
m u l t'i p l esurveys,
su rve ys,it
times
times the
the frequency
frequencysurveyed.
surveyed.
Peak
Pe a kCounts
C o u n ts
givensurvey.
survey.
1984
combined
live
live and
deadsalmon
salmonseen
seenon
onaa given
1984Peak--maximum
Peak--maximum
combined
anddead
fish/m ile count.
count.
Per
as
P
e r Mile--peak
M i l e --p e a kcount
as aa fish/mile
e xp re ssed
co u n texpressed
peakcount
Date--date
the peak
wasobserved.
observed.
Date--dateof
surveywhen
whenthe
countwas
of the
the survey
fl
o
-
year .
pr eviousyear.
the previous
dur ingthe
1983
in the
the survey
sur veyduring
P e ak--p e acount
k u n tobtained
o b ta i n edin
1 9 8 3Peak--peak
co
(A U C )
Estimated
E
s t i m a t e dRun
R u nSize
S i ze (AUC)
o
(AUC)estimates
estimates
curve (AUC)
Sur.--the
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APPENDIX C
APPENDIX
C
o
PeakCounts
Nonstandard
IndexStreams
Peak
Salmon
Index
Countsof
Salmonin
andNonstandard
of Chum
Chum
in Standard
Standardand
Streams
Stratified
Basins
S t r a t i f i e d by
b y Fishery
F i s h e r yDistrict
D i s t r i c t and
a n dRiver
R i v e rBasins
o
E xp l a n a ti onof
Appendix
Tables
Explanation
in
Tables
in Appendix
of Columns
Columns
N o . Sur.--the
No.
Su r .--th e number
n u mb eof
or f individual
i n d i vi dual surveys
includedin
in the
the strata.
str ata.
sur veysincluded
o
J
f
I
lo
M
i l e s - - m i l e ssurveyed
Miles--miles
t h e strata.
s u r v e y e in
di n the
strata.
T
i m e sSur.--number
the strata.
Times
within
S u r.--n u mb eof
a ctu a l surveys
m ade
or f actual
sur veysmade
within the
str ata.
T
o t a l Miles--cumulative
Total
total
within
to ta l miles
the strata.
M i l e s--cu mu l a ti ve
miles surveyed
sur veyed
w' ithinthe
str ata.
' individual sur
F
o r mu
For
multiple
surveys
l ti p l e surveys,
i t is
i s the sum
sumof the individual
veys
su rve ys,it
frequencysurveyed.
times
times the
the frequency
surveyed.
P e a kCounts
Peak
C o un ts
givensurvey.
1984Peak--maximum
Peak--maximum
1984
combined
live
deadsalmon
salmonseen
seenon
survey.
combined
live and
anddead
on aa given
O
Pe r Mile--peak
Per
as
M i l e --p e a kcount
e xp re ssed
fish/mile count.
count.
co u n texpressed
as aa fish/mile
peakcount
Date--dateof
Date--date
the survey
whenthe
the peak
countwas
wasobserved.
observed.
of the
surveywhen
year .
pr eviousyear.
P e ak--p e acount
k u n tobtained
dur ingthe
the previous
1983
1 9 8 3Peak--peak
the survey
co
o b ta i n edin
in the
sur veyduring
a
.
(A U C )
Estimated
E s t i m a t e Run
dR u nSize
S i ze(ALJC)
( AUC)estim
ates
Sur.--the
for area-under-the
curve
estimates
S
u r . - - t h e number
n u mb eof
ar ea- under - the
cur ve (AUC)
or f surveys
su rve ysused
u sedfor
within
w i t h i n the
t h e strata.
strata.
o
Run
total estimated
estimated number
number of
of sa'lmon
salmon that spawned
in
given
RunSize--the
in a given
spawned
Size--the total
survey.
s u r v e y.
given
in aa given
that spawned
Per
in
P e r Mile--the
fish/mile that
spawned
M i l e --th e total
to ta l estimated
numberof fish/mile
e sti ma te dnumber
strata.
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