|
<br />1,000
<br />
<br />'.:~~' ~.
<br />
<br />;""1-1.,
<br />
<br />=,- .',.~ ::u ~,:i.
<br />
<br />900
<br />
<br />,--':. -,:,~ ,.
<br />.' "'::',.:t ~. . \'~. ,;' .
<br />
<br />oc
<br />w
<br />'=
<br />"
<br />OC
<br />w
<br />~
<br />"'
<br />~
<br />~
<br />1'::>;3
<br />-J3
<br />l''':')~
<br />...:;",~.
<br />z
<br />Q
<br />r
<br />~
<br />oc
<br />r
<br />Z
<br />'"
<br />o
<br />z
<br />o
<br />o
<br />~
<br />~
<br />::;
<br />~
<br />"'
<br />
<br />
<br />BOO
<br />
<br />700
<br />
<br />600
<br />
<br />.,",'j,.;
<br />EXPtANA TION
<br />,- l
<br />SITE 1
<br />
<br />"
<br />
<br />500
<br />
<br />:~~-:',_~"r:i:SI!E,~' it;;~:~"
<br />~ ,SITES:::::- . _~.
<br />. . .
<br />~-':-SrrE 6~~~!J~~.'~
<br />_.' . _,'., ~. . f
<br />
<br />, .' ~";;:~:;i\:;;(:.' ,
<br />
<br />, . '
<br />
<br />400
<br />
<br />300
<br />
<br />STREAMFLOW AT SITE 1
<br />
<br />r I I I I I I I I I \ \_
<br />ASONOJt--MAMJ J A
<br />1994 1995
<br />Figure 3. MonThly salinity at six sites on the Colorado River and dally streamflow at site I,
<br />Julv 1994-SeOlember 1995
<br />
<br />200
<br />
<br />100
<br />
<br />J
<br />
<br />Allhough dlfkrelH.:e... in wecldy ";Jlil1lt~.
<br />ot'twecn "l1e... I ;tm\ ~ were 'lIl;Jll, ...alinlty for
<br />I) (lflhc IY \~'l'..:"'ly ~<I111plt:..; "";1" hlWl'l <II ~IIc
<br />~ lhun at "'It..: I <lig --l \ lh.' ..;hgh\ly luv.'c/
<br />,,;tlinilY at 'Ite ~ prol',lhly wa..; C;JlI~cd or lhe
<br />dlvcr"'llln ul Jh(lUI 1..'iO(l (uhie Icel pcr ~lTond
<br />or' water fnlllllhc ((lloriJdo Riycr ,lIlJ hy
<br />Inllow frnllll'];llC;lll Clcck llig. I J helwl'CII
<br />'lIe" I and~. SiJIlllllY III i'liJle.tU Cred !:!Cller.
<br />'--Illy'" "lIghlly In\A"Cr lh;1Il1l1 lhe C(llor:I(Jo
<br />River, and a <;[t\;l.U udulion In ~almilY in Ihi,
<br />waler-depktl.?d reach ollh~ n",('"r I~ I.:vllkol
<br />
<br />Sahnlly In weckly "';Ill1rk~ colb:teu
<br />from July \\m,'lugh O..:h'.her 1494 al 'lit.".. I anu
<br />.\ (hd lllll t."u'callht." 7(I(I~X"iO milll/;!r'-llll" pn
<br />lilcr Ihre~tlOlJ kvcl 1m ;lgrll:ullUr'--lII\l...~e\
<br />SallllllY in sample" from those "Ill''' ~hollltl be
<br />Ih~ \;\mc. ~1S the ~,::'.li'\iity in Ihe wa\cr Jl...'cncu
<br />lrllm lhe Colorad(l Rln'r for Grand V<.IJley iITl-
<br />,gator". SIll' I i~ at'ollul 6 miles up:o.lrl'al11 from
<br />lhe diVerSion poimll1r the Government
<br />Hlghlinc CJoa!. and ~lIl' 3 I" immeul'--Ilely
<br />uownSlream from the uiversJOn ...lruelure for
<br />lhe Grand Valley Cwul. Salmity WaS ,lbOlJl
<br />700 milligram;; per liter m the samples col-
<br />lected in No\'cmher al sill'>; I and 3. bUllhal
<br />was :ther ,he Img;Jlitlll scuson had ended.
<br />
<br />The possible dfecls of low natural
<br />slrcamllow in 1994 on "alinllY in the Colorado
<br />f{1\:er lx:tween Camcll..md Ihc Gunnison Rlyer
<br />(Sit...... 1-)\ prob;\b\~ ......ere p3n13\\Y ons~1 toy
<br />reserVOir relcJst"s. Monthly slreaml10ws '--II
<br />~ite I for fI..fay, June. ;Jnu July were JC) 1(1
<br />70 pl'n.:em ~lf 1I.li\~'leflll motlthly now... t"(l{
<br />
<br />
<br />s
<br />
<br />IiH4-9--1. :lItd lll'dly ...dilllly fllr JllIY;1l ~ile I
<br />wa..; hi,gher lhan for 1110...1 ...;llllflk.... t.:ollcCleJ III
<br />flrt.:\'lou~ YL':Jr, dUIIIl~ July Ilowt.:\'cL ~trt.:;JllI
<br />Il(lw.. lor AUgll..1 IhrlHI~h Nln'clllt~t.:1 It}l}--t
<br />Weft.: K~ tl\ l(l~ reft:~I\I 1'1' I Ill.' IOl\~-tl.'f\\\
<br />Ill(llllhly 1111\~'~ 1(11 II)J.~-()--t <t1"11L' I. Wee"")"
<br />~,dinll~ for lh(hC 11\(1\\(11" at ...i\c I .......~h t.:nlllr;l-
<br />rahlt: III hr..II'f1l',d .;"Iinll~ level... 1\11 the "';lI11l'
<br />
<br />B50
<br />
<br /> 800
<br /> 750
<br />'"
<br />w
<br />>-
<br />:::; 700
<br />oc
<br />W
<br />Q.
<br />"'
<br />~ 650
<br />-<
<br />oc
<br />"'
<br />:::;
<br />~
<br />.. 600
<br /><:
<br />...
<br />>- 550
<br />Z
<br />:::;
<br />-<
<br />"'
<br /> 500
<br />
<br />i
<br />
<br />I
<br />!
<br />~
<br />
<br />4005 1015202531 5
<br />July
<br />
<br />..,I"",
<br />10 1520 25 31 5
<br />August
<br />
<br />Figure 4. Weekly sallnlty al Slles 1 through 5,
<br />
<br />30
<br />
<br />monlh". Relca.<;e... ff()m re~L'r\'\lil~ In The llpper
<br />Cul(lrado Rlycr l:3Jsln upstre:J1Il lrollllhc
<br />2 Grand Valley. "lJ<:h <1\ Grccn M(IIInl;till ,IIllJ
<br />75 8 Rueth Re"..:.rl,(.ir.,. C0U\J n;jv":,,, l\lllllllm c\ku
<br />~ on .,alinily In the Colorado Rivcr,cspct.:l'-llly
<br />~ during dry year.,,;. I-bscd Oil d:JIOl t.:olkl"lcd hy
<br />~ Ihe USGS. \A'atcr rclc;j~cd Jrollllhtl,e IWll
<br />20 ~ rc~cfvolr~ lyplC311y has "ullni[y of le.\~ Ih'-ln
<br />U :WO Illirltgrarns per liter. Fkglnnlllg In lale
<br />in
<br />~ July 1994, relcase" frolll btllh rC~CrV(ll{~ Wer~
<br />u
<br />15 g lIlcrl~'--Ised, and these mcrea..;,ed ft,'.lcas~~ ,l\.1b-
<br />o llH.:nted now In the Colorad(l River. In AuglJ~t
<br />~ 1l}94, lowl rde:J.ses frllm Grccn Moulll<.lin ;md
<br />~ Kucdi Rcscr....nirs were "buuI B pcrCl:1\\ l\llhc
<br />S
<br />\0 lJ.. monthly !low IIllhc Colorado River al Sll(' I
<br />~
<br />-<
<br />w
<br />oc
<br />>-
<br />"'
<br />~
<br />~
<br />~
<br />o
<br />
<br />5
<br />
<br />Comparison of 1994-95 Data
<br />to Historical Data
<br />
<br />o
<br />
<br />The USGS has collccleu ...alinllY dat:t lilr
<br />mall)' year.... 011 sitc I {near Came(l} <.IIHj al ...lle H
<br />(Ill',ll thc Col<lr;ldo-Utah Stoltc Illlcl (In the
<br />C\llorado Rlyer. Salinity dalt! ul both \ite\ 111
<br />July 1944 were high compared to h",l\\fll,;,\\
<br />U;uJ lor I t)tJIJ-lJ3 becau\c of the !:Idow Ill)rlll'--lt
<br />..lre:lll1l1ow In the flVl'r. S.dlnilY <II .~Ilc'" I ;IiIU
<br />X lor lhl' rl'mainJer of 19lJ4 Wl'rc n\llllnll.~u.l1
<br />when t.:OInparcu to Ihe hlslorical d,ll;t The
<br />hi~l\ ;tnU rn\l(\l\g~d ....II\V\-II\l1cl\ rUIH.ll of ll)\j~
<br />c.lIl...cd I(IW ....,lirIlIY In I hI.? Col\lr,ldo RI\l.'r from
<br />June In Augu\l. S:llinlly Il'r "llC ~ dunl1~ Junc.
<br />Jury. and AlIgu..I 11.)9) (rl~. 3) u-a...IO\\Cf lhall
<br />lhl.' ~.Ilillily III sample... colleclcd Ihn..l' 111\111111...
<br />dUflng 1911\)-93.
<br />
<br />EXPLANA TIOH
<br />
<br />____ SITE 1
<br />
<br />--
<br />
<br />srTE2
<br />
<br />-+-. SITE3
<br />--A-- SITE 4
<br />
<br />----e-- SITE 5
<br />
<br />..,....",,,......,..,1
<br />1015202530
<br />Seplember
<br />199<1
<br />JIJly-November
<br />
<br />"'"''''''''''''
<br />5 10 15 20 25
<br />OClober
<br />
<br />31 5 '0 1520
<br />Noyember
<br />
<br />1994
<br />
|