HomeMy WebLinkAboutSUS158I 982 MI MTER TkNPERhTURE STUDY
Open F-i Ie Report
Ccmpiled by
6. Moody Trihey9 P,E.
P. 0. BOX 10-1774
Anchorage, A1 aska 9951 1
w< th coratri but? ons from
the 6
Alaska Department eP Fish and Game
and
Arcti c Envi ~onmntal 1 nformtati an and Data Cente:.
Prepared FOP
ACRES MEW1 CM aMINtORP13MTIPED
BUFFaLO, MEW YORK
June 1982
~ WEST 5th &iV,\PENUE - AWICiJORk3E, AUSW
May 1, 1984
Susitna File No. 1.17.4.2, 6.:8.5.5
Mr, WjlSSam E, Lasson
Project Director
Harza-Ebasco, Susi tna dV
711 "H" Street, 6th Floor
Anchorage, A1 arka 99501
Subject: 1982 Winter Temperature Study, by E. I.I. Irihey, June 1982
Dear Nr, karson:
During a discussion for the next workshop, the above
report was cited; however, it did not have wide distribution agnong
the study participants. I have attacked a copy for yourh use and
provided copies to others for their information.
Sincerely,
Attachment as stated,
cc: Hr. Eric A. Marchegiani, Alaska Pokder Authorityy-, w,'a
Mr William Mi'fsan, AElOC
Mr. Steve B~sdthaver, R&M Consultants
Mr. Don Beyer, Marza-Ebasco
Larry Moulton, MCC
Mr. E, A. Trihey, EWT, w/o
Open File Rwrt
ST~P
Open File Weprt
E, Hoeay Txbheys P.E.
Alaska Bepa
ad
Aretic Envizcmental Info
Febmargl 24-28 Trip RgpaleQ
Ee WQ&~ T~ihdy ~me~e~a~~a~eaeaee~ecseodaeeem~eerau~o~*~ee
riees uthe finaingis of a joint effae beween aaysalf,
(Ba8.~ett, 1975 2 mF&G, 1981) . ma 1982 wonrle was intenaed to provide a
naq fydndstetaning of baseline mi+wintex haDitae ccnditions at:
ham spa~ming areas, obtain auxfaca and intergravel watex teinperatlare
data, an& to test a vaxiety af iast n%s fox mea~urBag wae@p tap@=-
at eonaists of axee pa~s: a s q rapfl, Chata prasenta-
tion, and a tzlp repae, mg s am repoe ddescrues tha meL%ads used
for collecting cormtlnuous md instmattmeou~ su~faee md.' intargravel
data wexe obtdnad, md pxe-sents graphics% eewaisons of trapious data
sets. Appendices W B canti)lin continusus wate:r tmprature
deser2bes &e week's activities ad cpefars same insights zegwding Bhe
21 Uver stage appears to be iluEluenclng cg~rsun6water upwalling ir,
ae sloughs*
In~roduct ion
ling stations were est4gblished e~l the
Susitna Uver above Talkeeeaa for the purpose of abeaisiag aridt-k~ter surface
gad insergrwrtl wager gewerature bta. These daea vere cellacfed tc deter-
dae ths *c~i~t~ffec~fvea~ss af % daga eolleetioa ~~mthads ad Eo
1 ckzosseristicer cf -1- s&de slatagh
spamaag (incabatian) and avemiaesrriag are&&. gaga were slaa celllected f ron
cpen wgter leads ia the minstgla river raMsb appeared eo bavse mauiticblc sub-
sersses far sah~w spaming. A l eed nmbsr of kn@gmganesas miasgem zfver
tenapaeaeuras were also measured by mP&G and R&K Consultants in asseciaelen
* * ? * Doe preeeatcd lin this repore.
Both saak%auous &ad %asta2ga~@sppas ~uxfaes and heorgravel wa~tor teqer? a EUT B
a Raad held mercuTe themameter was used. En these gainstances surface wager
tetlpperatures Tgere masured at 6he watez surfacg.
Teqcrature date abtained with the Ryan 3-90 thcwographs are believed to be
within2 0.6@6 of ae~ual tmperatuzer3. Teqarataare data obtained by usbg PSI[
arature probes in associaelon 'coith aither e YSB 42SC telaetterm~ater or
Bigisease dlgital themornotex are eaaeh%a 2 0.P86 of eho actual teiqmpePatures.
Surface and intergxavel waeeb tenaperetare data presented in eEh:is report for
slough 8A and 136.2 were obtained using a fabe~ato~g calibrated the
probe and record2ag spetenr wieh a cerelfied accuracy of -2 O.lO@. 'Phe mp;Bi-
tude (~f ehe tgqertleure departure from the 1aBoratorj teglperrcure standard was
born ~QE ea4:k themfste~ msxr~af oza the f20Bd -s -mea~aremeats o!C surface md
Pakesgravel water teqeraeures could be adjusted fe eolscide exa,ctPy etPI the
standard laboratory tentperature by usLng the rorrecefcpl factor far each
indfv%daal probe.
Hd-%ater teperaeure data were obtai~ad fro% 13 sPteg at 7 locabdons alwg
eh@ Sus&Cm Rdvao bemeen %25 &ad 143, 1as~arn3a~~g%oa was eeacsatoaeed ia
spam%m~bng (incubat ion) areapi, dth perelcrah~ aetenrgf oe b43Png ggven %e
thc side sloughe. Intargravel &ad sttatun teqeragura staeicne wabre l~cated on
he baaia cf BQF&G% 18981 obsemaeiomae of. sp ng 8cei~ity . Upwelling
spab~larfaee fLw wae ~baemed OP believed to be prasepng as wll laeatiana
ma%e@r@d *
Congiauosxs ~aacfaee sad %nechgrpaseL wa6@e Eeqerae&re dafa collected bc~~rreen
mid-F~bmary sad eazlyr lay 1982 are preeeat~d %a lintcaBuhr fa t Appendices
A igiad B. m~~c sme data are praerinted graphically 18 this scsc,%a~ cf the
report ts facd%itrabe intcqraea",ion.
ED geaernl el~ese plot@ iadieaee tbac durb,~ dal.d4dtn%ar %at~rgravavcl vater f~
oeogabkg PZ~~~EP md ~cb a mbo%e ecaataat teqahea"lupa tha the surface vaten,
This ~tronglp suggests &hat Fneexgxavel eeaparaeures respond Bndependigatlp of
surface wager temperatures. mis was emreted since she mo~ieorlng seaciano
~@ers lacated in open wager leiads which weze ha-, or highly staspscs, of he%%&;
cagxa~sed by up<~~elling ~lubsarf aee flaw,
Althorpgh their daitiaL cset bs greater, tka
tkda study provided greater PPBCISBOQ~ sad B =re east-ffeeei~e mthod sf
~Q~I~C~PPH~~ atre= teqeratares thm ttLe Ryaa ghe~gagrgphs. Z7ae sreatesr cast
sae~ings was attributable to reduced pcrsamcl eosts for dara raducrlen and
prcrseneatian. Ee is also balievad ehzt mrc reliable intetgra-gel wager
bemp@ratern"c daea were cbtalaed by drbv%ag bba ~i~ele prccbes intu sere
gravels ghaa frm buqing the wag: ghaeaagrapb u~psits.
- - -.-- -- .-
jSasa~$83 af &amampha i.~-, Baagh 9, QB,
SURFACE
WATER TEMP,
Date (nmn corregponds to &!~e First point following the date)
BURYACE
WATER TEMP,
Mean daiiy in%e~~~atel and su~face wtlkerr termpemeure dab hm
ADPBG Rym &heamo@;aaphci at 88onaa 9B, FeLPmew 28 - AprSI I, 1982.
Bay 1 2/28/82
Mem dcfay iintergevel aaad su~aee wette~ temperature data f~em
ADP&G Ryan tbermopphs at Slough 9B, Apr3 4 - May fi,lLB82.
8urface
Water Temp,
elas 4 lzo
Day I a 4/2/32
la%&rpv&#
oar waW@g T@&%@=
Me= dletly ia~krpigaste8 asld auirface ~v;ater &@mpc?ratuae data from
WDPBG Byma tberraaesgmphs at YBeu@ 9, Oebmauy B 1 - March 24.3982.
Mean drlSy hterwvet sad 818at~ee wa&az %@rmrpemtcsre data &om
ADP&G By= $$ermagmplas eal Slough gSi, MareR 25 - May 5,1982.
Graph 2 of' 2
Temperature C
Day 1 = 3/25/82
Me=$ daily inte~washro?l and surface water temperature data from a mabtem
~pawaing site in the Susftna River at river dIclile 136.2.
INTERGRAVEL
%VATBB TEMP,
SURFACE
WATER TEFdP,
Dale (noon ec~usespondo to the first pain& falloairag he dote)
TEMPERATURE C
Mcm drt$Jg sugface water &empemtssze dah f~oaa~ ADF&G Ry~na
&ki&~magmpb& @% 8Esspl& 11, Pebmpary 26 - Mach 24,1982.
Day 1 8/26/82
Mem daUy laater~avel and surface ~we&ee kesnpe?mture data from
ADFSLO Byaw the~a~cagmphe ek %lola@ 19, Pebxuw 28 - March 28,19112.
Day 1 211018%
Mean dagy inb~~avel ;awd surrfaee water temperature data from
ADF&G Rym themoophs a& Sic~u& 19, March 2'9 - May 5,19632.
Mesa dsBg bbrsavel and surface wakes bwpemture da&a &om
ADB"&G Ryan tfnes~aoo~mphs at Slana* 211 Pebsrsary 10 - MmcBs 17,1982.
Day 1 2/18/82
Day B = 3/18/82
Day 1 a 5118/8%
Interpsvel
Wakes Temp.
Burfaea
VJaber Temp.
Mgaw daily isnter~aveil sad surfgee wpak~ &empemture data from
ADB&G Rym them~saph~ P& Slough %PA, Febm8~gr 10 - March 22,1982.
Day 1 ;;2/60/82
IntcrgravsS
Water Temp,
Mean dally io&erm&vei and surface water &empemtasre daeia fgam
ADF&G Rym thcrmopphs at Slough 22BA, Fdagch 29 - Apr3 31,1982,
DP2321 temperature data
Sutfaee & intergravel wager temperature
~geasure:ments Feb. 27 - Apr. 25, 1982.. ................... A1-6
--- Stlrfaee B %atergravel wgcer teqarature
ro@aBure~aents Feb, 27 - April 25, 1982...............dDOe.e 89-12
Slough 21
Intergravel water eeweraturc . .............. sdeasure~~ents mr. 9 - APE. 20, P962........ 11.33
AT
MW DATA
.8 e 6 (dl qj
.8 .6 3,
2.2 1,s
1-5 1,O 2,4
am-
&& &@ &!
-5 -%
8-4 w +&
4% &
---h -%% '-a*
@3 4%
CW hB Fd
%-;Sam
483 @ &L!
80 5e S16t
&A 83
@%a Q3
Ryan
miskers Greek Slough
Surface water temperatures
Peb. 17 - M2iy 6, X982...ee...e..e..~~oe~cae0esPeQ*~01e~~~~6, B1-7
Slough 9
Surfaeo water tewera~ures --
IPr Feb. 10 - MB~ 4, 1982. .~e~*~e~eeee~EJ(laOaeBe~~~~ePotr~~~ee.spe B8-15
Intergravel temperasures
Feb. 9 - May 6, i982...............00e..a.C6sPBe(Ie~1Pb~01e~e B16-23
Suxface water $eaqeratures 3 --
Feb. 29 - May 6, 1482...e..................e.....e. .......a B24-29
Slough 18
Surface water EeqeraZureB
Peb 24 - ME. 2Zs 1982.......~..~...~e.~~C1.0.QeQB~~~EJB~B.0 B36-40
Slough 19
Surface wager tevcrare%~res (A)
Fag, $ -' my 2, l982eeeeeaeeee,eee,oeeargoee~aeeeoeCio~eoa BS5-59
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3 e0 5 e@ 4 1 0880
6 *8 5@9 6.5 6,s I1000
tQB bo5 6e5 1 1200
I
2 6a5 be5 6,O 1400
6 6@3 SB5 4,s 10600
Q8S f D #: 000540 @ * " POW A~B--%~-M/GORBEGT a a * PACE 03 0F 07
D A T B
820807 a0408 820409 820410 820lll 820112 620119 820416 810415 82@&%6 82@&17
ems- arsm
I 3 43 388 3e8 3@0 3,Q 380 3eO 3,O 3,O 1 0200
f! 3,O Se0 3e0 3 30@ 3e0 360 3 300 300 3,0 8 8408
I 3 &I 3,Q 3,0 So@ 3 SeO 3@0 9.8 3,O 3,Q 3,O a MOO
!i t
t 3 ,@ 3,Q 3,0 3,O 3,Q 3,0 3 3,O 3 @8 s6,0 3,O 8 0800
!! 3,@ 3 3@0 3*@ 3@0 SsO 3 3 3@0 3,O 3@0 1 1000
9 3*Q 3,@ 3 e@ 3 3 3.Q 3 3eO 3 e0 3.0 3,O I 12@@
t I
D 3,O 308 3 3 3eQ 300 3eQ 3g9 3.8 3@0 3 a8 i lBOQ
t 3 ,Q 3 a 3@Q 3 3 3 3@0 3 3*0 PeO 3@8 B 8680
# so@ 3eO 300 3eO 3s@ 3*0 3*0 3@Q Sa0 1 LmO
I D
fl -a=. %a $a@ 3*@ 3@@ 3@@ s80 3.0 3..@ 3 @0 3.0 I 2000
t 3a6 3 3e8 360 3aQ 3 Be@ 3@@ 3 .3,0 300 1 2200
I 3@@ 3@0 3 386 3e@ 3eQ 3 3 3IQ 900 280 1 2400
Februaq 24-28, 1982 Trip Ralp~rt
me puzpose of this five day field trip was to establish a netwoek af
strsmm and int@rgr&vsl .water tqempssa,tura mnitoring stlations, &qd to
arcugh April 1982. These data ape expected to pr~vide~ a pxel
udsx!etadbng of baseline dd-wintax a charaetsri~tics at :ma~m
spi~wning areas in tbg si.de SIQU~~O~ ad s~face waeex tWjp@WtW@S undex
aaaplrd. f& is @usp@eted *hat $Iza water pxesent Fw eaas we9
@pn~le4!~ due to ~dtagi~ng md bricb9tatex effects csf the amhste~2,
mnitolrinq stations and preparea Ulxee additional siten for installa%dan
acl to Butchorage afternoon of Februaq 226. Jeam Baleige
(milelDc) wave to Talkeetna
Sto%&g~~ MduLes md
and intergravel waiex tmperatures,
Ule sleugh (RM 142) . Slough. 21 is losated in the damstre- side a2 an
old it bar.
alder-cottcmnwaod uverstoq and probably eonsicsts of raChe~ peranedle
. iall~%~f~X depsits. St is quite concaivdla t aae upelXk~g fPm
a&x~srs PR &a sEsugh ~es~lt~~ at %ease in pa-, :Ez~I me hydraulic
Iaesd ere~ted by ehe diEfarence in elevation bat-= b9.e~ stage of the
m:hastm river an upstre- side af ae pafat bar ad a@ stre
eraewe etatian was ese&lished b the upper: pa:ti~n uf Slsugh 21 *
wem installed Febmaq 27 tc E~COP~ averageB
aeir 1981 fie16 studies. Qn Satu~day, F&~ME~ 27, 3eaa Bal&%nrig@
locataja ad identified several redds. No jwrnile fish urerc sbsempved.
Qne xakdd was digtuxbed ad ten aBevins wexa ax-acted, mese young
salnwn were pzesemad in alcohol md presented to AXaa Kingrb (mFQG I
Cam, Fish, ) Eox Bdsntification, Be tentativsly ideatJi~Pied am as
n, Pnacaking sat gflZ wehgs w81;lafd hawe to be -- 4%
c~mtefd OX V~EA~&G~~~QW 6f ideatiky,
bas $@@a AdelatiEied in *e 1981 MF&G field stuaes as prt3viding spa-
in9 Bz&ita& for ehw s& n, It als~ provides ~eain(8 hdftae fox
A @a&@x% a@ upper p-io~ af SXaugh 20 I~XG~B me @&@te
A mnlbtcrinag skatfoa was nat est&PinAed, but su~%ace abd inkexgxavel
packet t%bcrm~=tex, 01% 1P&;aagn%al~ 25 sua3arakface and @w%ace watsr tmpcr-
s&et~ate *%ad allow~d ta stad fes 5 &,nates befsre a~txacting it. fYhis
tsehiqpe was used to obtain -8 subsurface tmpgratuxe ~@~SUS
a 15 d.nu%e the spa,
A perrament manitorfwg station was eatalplished in e$a slough approxi-
mte1y 250 feet
series 400 t-peratwa p3:obe was fnstalled ta a dapa cf orie faot in a@
strea~ed gxiivels at a suspected sgamhg site. Boa intaxgravel ad
su~face water tmpexatuxes were nreasraxed as being 2@C. (The surface
@%ex atged mas-@ ae tmpezatu~e sf -- =mat
-&
of Walttaxfall Creek, m~ee hol@s b"fere chapped ough &a ice in Slough
20 of$ mu* af creek only %a $knd sat aa sh~agb was. fxozen
solid fffsta a@ s*@eak@e Based en this ~b%@rd&eL8~ af phygical
cond%&ksns, ?ha toea% Bnpat af sex@= glm md he&% enexqy into SPoagh
20 apazenely ezigiraata~ Zzam
fl~~ ld~m~t~da fn ae %Laugh 2~- ese m~a 82 efb~taq~ kt. &$s
watexf6alP Ceseko it has fxez%w ~iolPd %szdng ice plug 91e sla13gh.
mxe feet ines gx~aea bed of saaagh,
a disc:b&~cge area~wm~ent might be md@ at muPJa sf elel
whe4&e:g a@xe %@ a nee knerease QX decxeasa An suxfaca Obaw in tkls
gj~&zeacsh of d&@ sla~agh~ X su@p@ekl "".,a$ a%sze fs a net Loss o2 swfaca
flow ta intergravel. pezcolation which laay be reappearing dasxnstxea~a
samewlisaerc mdex ice cover between "&e ~QU* af Wake~faa&~P 6xeek a~d
a@ a~aa of Sl~ugh 20
*be . Slough ' s ice
COV@X kbl~~ m~a C3f Wa9@~falx t~ a@ja~@fiah f@h@'&@% OE
watex was present in the lower poeican of a@ slough. The powex auger
was n43t used beg.;&aae of ae BfkeBih~od of dsstroying ae bit we%@ it to
erne fa contact wia ~XOE~B s*%tzate WOE@ water not gre~tsent wdesrr me
ice eiatte?r. Csncri4eraeAon was givgn ta installing a wan che
4
haw eve^^ & ~u:~lt&Pb fscatiea
caald not be fomd (too shallm) T%arg;.ePe~s, ft f s ~~ie~mended "n$"haEat
wheneyrer ADF&G fie%d CP~WS ax@ in the vieiaty of $laugh 20, aey
mou th
1.a ha& he%& $apexata~e pzabe [By&o--L&)
GBara@h %9 was i&@a+ifi@d iirr Q%@ %98L B$"aF&G ratuaefs as a esckepa saBmoa
aax&ii@r An eba mna by Th Qua@, a
an 2.3-28 f i@Bd v~axk,
of Slola* L1
Rfvez at M f36,2 ad X35, M addftf~aa8 sation !I& located fw
that will provide for Ule cellecti~a of boa continuous and instmta-
nearas suzface and intergravel water tatnperatare data. Slough 11 an& U?e
minstlm sidts ~hwma8 at 139,2 hav~ been IBsntifidl~d k~y mFf6 a@
n spaustning arreae. Slsugjh 11 hasr alss been idaabified a,:: sn
6
continuaus re?eording station was ast&Lishecl in. e side c-mel of Bt~e
Su~itn,~ Mver (m 136e21 ta =&sure %nt@xgravel md watea: t
domstrea frm "me YSI probe to obtain a ccntiauaus reeuxd of surf ace
aratures. A campaison can Latea: be mde beeween the pe~icdic
readings of islter~avel t
Jean BaPeige ma I obsenrc?d ~sev@raZ sedds la@ a aclea~ ice c@v@~ on
ah Qne zedd diaQcly downs&rem of an open-water riffla was
distwbed ad WQ sizes of eqge -6 several allevins were col%ected. The
sitioa of eggs) hsr -a a- to hi@ u+ilization cP
4%
ai~ by adult ~parnexs,
These eggs and alevins weare pxasemed in aleohax ad presented to Allen
fdawkiLled Ch@ aXev6~~ ma
co~%%dBant a@ Paxgex wgs were ehm @&:ban eggs,
i% ?A%%& 'kempeza&m@ mwito~&ng a&&&%~sm was e~L&lfskked h a m&*inatm
okwm Lea& wwfnieh whae
rrasj nnoL 14~0- t~ OCLWZ ikr aka% =@a. XSX ~.&;c%BB 40Q t~-@zgk%%xe probee
%fag@ im$&%ji.@d 8a ~@~EQQZ~ 25 %Q =aB8%X@ ~S~WS I~$@X~X~W@B ad
atad, ad ?he id ~f esh@ve& kt was faun& $63 be hbgkk2-y cgm&ant@d at
savaxesl aftas Fn localion, me sueace layax qiBu@a P&~@ false
i@praa~iAaaa t&-&t @uibaebk& ~pawililiq s%&e3hxa'6@9 wexe pre~enk. Bnly *a% top
2 to 3 $ad:hea (apgz~mnim&%e LhS.Pickn@as af ana Lay~i?~ sf khG8ne laxg43 wavsx
silts ad fine sand have completely fixred the interetitihl spaces
mtexids wia a shovel, aelea?garra bt. f# do~&tful
r*ould be saecesafilt in dfggincj rrecadls eat faii~ location.
Dus to watars of strs
side ekanneP ~*ould be a highly productiva spmirag area leven aaugh it
fs fed1 c9dkrectLy by upwalling subaurf ace fPow.
Slough 10 was notad as rewing =@PI in the 1981 MF&G
s%~~dkes, bud nc adult: spamars were obeteaved using aie aea. merefore
Slough - doamstxes~sa fza a@ ea~flur3aee OP We
also located an ae dawnsexem a side of an DB~P point bar. llhus it is
ayite p~s~ihla that ae srnbsrarfacc Elow which arises in Slrjugh ie
driven by hyde.auXic graaienta wMeh exist bamecn ice-covexd
bksked in BPough 9 and 9B ee dets a@ if %s a net&le decay in
slaefzr~e and intargnavel. watea: t@~peratures as ame mves d~mstreaw in
bslwd ~Uie ga&&rsa& =ack~"l~aa inolallad by Tb Qua@ and CO~SBB~S af
SXougb, was identified ae a probale coho spawning area. (Coho saxcasses
we+@ abgel~vrd Slough 9B h ewly Oct~bez 1982, am& d@c~wo@edl
jawbones whi~h my have been coho. were obse~ved F&puwy. 29 neap the
tmperature probe, was established in the stre
upswe= end of Slcugh 9B. The slough temperataxe was measuxed wiCh a
st spgt loeaCed during -is
eratuxes were .-?- mssuestd a% 4,4 a& 4,5@C on
e*
Qnxss days ~h8em&t&oa~ we%@ mdes Suxfa~e wate?,g tw~azatuxes wexe
and 24e8@C an S~"~sqday* me vxiatian in suxface vatcx tmpssatuxes my,
in paxt, hs attxBut&le to aa field teehicques; tathaler zfhm actual
Y~E%&~%Q&s fa %~f &c@ W&g@g ~=P@X~%IX~S a
foud ta b6 $80 &ick t8
was n4at avai b& he, )
continuous tapexatare aaclritcring stations were lesti&lished in
Slouglh 8A to obtain integvavel md supface water tearperature dlata. A
Datapod wecoxder (serial No. 567B) and -0 calfirateid probes were
@paning =ea fn ugbper pohtion of
1 A (caSilaration correc%$o.cw +- -0.09@CI ~eccxds f atraw
$calilbxatbon eozreetion -0,%2@C) gscsxds surfaea water tempexakuzek)
Avexa{ge , mal dnbm temperaeuxes axe recorded fax 6 horn
I~hsroalse p e-
atrate composbticn in several alpen leads, it
hcae quite apparent sat suit&%e spawniag areas are vekq P
spawning substrate is tkighlp cmenbed witkin ~nly a few inches af *e
strsW~ed suxfaca, If 8pam%ng daes ocmr in ass@ areas ox in seas
t%b~ ~i~ca they could ollly ba depsltad _2 tc 3 i~~hg~i bcneaeh the
4L
' ape bs ba mintaAned e&@an side slcugh spaming areas mgL be retained or
dtigative aetians wbi& wald paovi&
'fern %OCQ~~ORB~ weze t~ntati~ely identifie8 tkaae could ba skudied to
d@t@mia@ g@a@ailiQ ae c~@&thg ar *rav&ng
accepe:&1< eiz~ s~&s*(lwers fax spamislgp but silt ad t3a~d8 ~~hieh
have been depsited in the inkeraticia& spaces cemdn%ingi and compaisting
ae subs-ates, preclude use of these ai^eas by spawners.
smfll. seals duxincj %be X9$% field seasan to aacs~aia Ule dsgcaa ea
As ag;ecspt&2@ &or succasefal .>:aiwstsa spamdng. A pixat ZiaPi! stuay
f xeaze-earring , p.e~@txa1e%sr tests, a6 sieve malysis te &ev 9Lap
Baby] be eaaseaetd regalling his aperit~ees
uia a&ing
pagsjLbikaSic ~~pp1I~aei0n fa aa m~hota %,ueibna Rivex,
Intergravel and suxf ace water t=perakuza E 'C) meagx!reakents
abtainedl at established ~cuo~itering sites.
Febraary 25-28 1982
Ice Cover at the Susi tna - Chul i Lna Confluence
Ice Cove~ sn Slar!t~a at RM 102.8
Datapad recording statf on in Slough 8 W
9 -
Conti nuous surface and intergravel water
te~eratuse data $el ng recorded
Or, 4
Slough Pb t bni toping
Stat i oan
VSI probes for surface
ad .I nterg~avel wate~
temperatures.
Ryan the~ioograpin mni tor-
Ing caatinuous surface
temperatures.
Fry extracted $ram Redds with tire aid of a shave1
Eyed Chum salmon eggs from Slough 11
Comparison ef a1 evtns f om SL 21 and l.%
Date of depesdtian unknown thus djfference ips development cawnet be
attrfbuted to tompe~~atut" even though tem~erat@v@ cm~a~.-i%on WOU'O~
suppoPe such a statement
Thhenaal lead in thet side channel below the nauth of Slough 11
App~exs'mately M 135.4
Rt:coimi8lnended study rite for spawning habitat improvement for
mi tigat-ion. Idea 4s ta, scarify existing substrate or place
sgawntng sized gravel. Rely an reduction of sumer flows to
prevent acouri ng af gravel .
Datapod site in mainstem below Gold Creek Bridge. Continuous
surface and intergravel water temperature data is being obtained
at a kxlotnrn spawning site PB -
probe far obtaining inter-
gravel water temperatures
from perl'odic sampl ing,
Obtaiai ng inte~g~svel water
temperaturn data from
Slough 21
Mainstem moni tori ng station RM 9 43.0. Ice
thi ckness appreximatel y 4 ft.
YSI series NO themister inserted through the
ice for monitoring insantaneous mjinstem water
termper3 tures .
Mid-wi nte~ csndi ti ons SI ough 22
Approximte'ly RM 344.5 ..