<br />(Jill ~II~
<br />
<br />December
<br />
<br />1002
<br />
<br />COLORADO WATER
<br />
<br />l~mpc:ralurC' ('C), ,~..:ilic ,'onduo..:Ian..:e
<br />I!JS/cmJ. ;md di"oln::d o\~gr:n ong/Ll
<br />....ere collc:dl'J at ca..:h ,.unpling ,lie >lfld
<br />at dl'plh.
<br />
<br />\\';llcr 4ualil~ ',Ullpk.. ....ere l;l~en lor
<br />nulnenl and chlllf(lrh~ II J.IlJly...i... at c:.K'h
<br />rc....:n lJiT. Sampk... v. ere ,"{)Ileo.:ted at
<br />apprm:imaldy OOS meler dt'plh IW1l11ht"
<br />boal ill I liter HDPE lx'lIk..., Lioor..IIory
<br />analy...j.. for allllllOIll.I. nitrate. (1q:JOIC
<br />nilrogr:n. 10lal pho,phor(lu' (TPI .1Ild
<br />onhopho...phatl' ((>(). I wa, .:ompkll'd
<br />al Ilk ColoraJo Slall' t.:nin::r'IIY Snil.
<br />Wall'T J.nll Plant T c..lll1g Llbof,llory
<br />u'll1l! Standard .\klholh IAf'H.\ ]')lj:'il.
<br />Fi...ld and lahoratory duplh.';lh."' ....ere
<br />I.:ompkll'd on un 01 the- ,;ullpk...;j\
<br />pan ollhl' l/uJlity a"uralh.'C .lIld l.(ualilY
<br />l'OlIIrol pro\(X'ollllal1 ~OO~I.
<br />
<br />.\ ~Ii,,'ro,oft E\..'d ....or"book ""'a,
<br />Je-\dllpcd Il)~\'alu;llc Imphic rt'!aliolh
<br />for thi, ,Iudy and dc...gned !llT IUlur~ U...t:
<br />b~ rc""I'oir Tll..tn;I!,'er". The v.\lrklxllJk
<br />":OIhl...h of 1\\0 "prcad"ht'eh.lhe lir"'l
<br />of v.hidl .:onlain,:!..\ ..'()lIll1Ul!l lIUlrie-n1-
<br />..:hlnwphyll modd, fwm a lileralUrl.'
<br />fC'\'il.'\\, The ,e..'lHld ...pre\l\hhl.''''l U"'l.'''
<br />lhr~e nmmlOn TSI !O d~ll.'nllinl.' lho:
<br />Iwplm' 'I ,lIe tKN.J upon inpul \alue'.
<br />
<br />TIle lir...l ,pread...hel'l .Il1ow... u...er inpul
<br />of mea...ured \alue... I TP. chl(lfoph~ 11-
<br /><1. Se..'dti di...f., ,krlh amllol.11 nilwgen
<br />- T:\"). "",hi..'h arl' u,t:d in Ihc elju<lli,'n,
<br />and TSlllbl1 ~lKl~ I. In order In ..'llmp;lro:
<br />Ihe dfccti\'CllC"" of ..'llIlHllnll Ilutnelll
<br />- ..:hlowphy 1\-</ 111\ldd.... lht: ,preJd"heel
<br />v. a... de\eloped tn ..ilrnpull' 11\'<:' Il1C,I...urt:...
<br />l('orrclalion ('odlt..:rcm.... ..'tlllIIJ\.'n...t:
<br />inte-I";lkand.l\l'r.rge.mdr,,:r"'l:nt.I!,'\.'
<br />\.'rrorl 01 prt:..'i...rl'll ~tw\.',,'nlhl' n'rnpull'd
<br />;llld olht:r\ cd ,,'hlllrorh~ 11-.1 \alu......
<br />IClIllidd l:l al. I'l)\._. Brown ,'1 al. ~t)(KI1.
<br />
<br />Tht: 'o\'Cond "'prc.ld...hl'i"l ,,'omparl.'d
<br />re"el',lir da",ili...IIIOIl .kl~mlincd
<br />by dillerelll TSlw e\ aluale TSI
<br />Jppli.:abilily 10 Lhll.'m COlllr;l<.1\1
<br />re......r\oir... in Ill<" Soulh !'Llnl.' BJ'Hl.
<br />Tho: \\{'rbhcl'l ;llkm... Ill<' lIIpul 01 d.tla
<br />.md ':1l1l1PUlc'" llll' r"',ultrng intle\ omd
<br />..'Ia"...rli,ali(lll 1('1ip'tH'phr.... nk,...,)IWphrl'
<br />llreUlmphr':lb.I'edup"n\."k'h
<br />par;lIl1..'Il'r. Th\.' tin;ll rc"'Ulb ,'aJlth\.'n b.:'
<br />..:ompar,,'d.
<br />
<br />H.e...ul"
<br />rhe walcr \olulTll.''' of ;tlllhret: rc'er\'Olr'
<br />denea.....d ,iglllli,,';rnll~ a.. v.aler- werc
<br />u'<.'d for irrrg;rllon, In gencral. re...ervoir...
<br />,htl\~ed lrllle ...\'idl.'n..:t: of ;llhenmxlinc
<br />Ill.'Il1j'>er.l\Urt: ~.h.lllg\.' with \\.dler dcplhl. Ihe
<br />\\cll-mixcd \lalt:r, \\l.'rl.' al....,t,:hemi.:ally
<br />"'11l1ilar \\ llh dl'plh. In bOlh SIt:rling .1I1d
<br />bd.....on R.:.....T\oirl< di,,,ol\\.'d (l.\ygen
<br />genaall~ dl.'t:rca,\.'d.h \\.alt:r deplh
<br />innea...ed,
<br />
<br />;\ulrit:1lI r.:,u]h ....al.' inll.'rprcled in
<br />relatIon III ro:..'.:nll~ dl.'\duped EP..\
<br />nUlri':IlI,'rileria and guidan...\.' f,lr the S,'ulh
<br />Plalle Ri\cr (3,I,illlEP.\ ~OO] llTahk
<br />II. Ine,c t:ril\.'ria are inl...n,kdlO;lidlhc
<br />Slale (If Colurado in dc\dnplllg nutrielll
<br />'l;mdard".
<br />
<br />,\ denea".: 111 '1':'\ lrom .\prillhrough earl~
<br />,\ugu...1 wa" IIh'l.'f\'cd al allthrt:l' re'~I"oir-
<br />lHgurl' .::'1, Thc nlll.:elllr':IIl\)fl" rt:lll;litwd
<br />10"" in :\onh St\.'rlrng. bul lllne;b.:d ;II
<br />J.L...bon.1I1l1 Prl.'v.rll bt.t\\.een.\ugu,>l ami
<br />(klOhcr. Tht: r;utgl' of T' ~'(Jn..'t:llIralion...
<br />\\.a, I'UOO- L7t~1 !Jf/L al Lt..Io._"lfl. h.9()(1
<br />_ I.N111,ugiL al Pfl'will and \I,.l()(I_ ~..\I)(l
<br />IlgJ1. .11 Srt:rllll~.
<br />
<br />'l:itr;II..' ..'otKcnlr.rlinn, III :\unh Slerling
<br /><.Ind J;r..k...,m Re"'~'r\uir' ,howl'd;l ......:bonal
<br />do:dinC" t Figurl.' ~l. [kl\~een .\pril 10 .1Ild
<br />O....lnhcr x, mlrall.' ":lln...\.'lllraliun... rll '\onh
<br />SIl.'rling Rc.....r\'orr Jl'~'rca"ell from O\\.'f
<br />5J)()(I,ug/L Il' I\.'" Ihanlhl.' dch:dron Irl1lll
<br />01 jt)(l,ugil.. Similarly. nlll..'..'lllrallOlh al
<br />J;t..:bon H.l.'.....f\lllr Je~'rl.'.I'l'd fnml ~.'7I)(1
<br />Ilg/L 1(1 .:tl or h('[o.... Ihe tkledlon Iimll
<br />lhrnugh 1.11,' Jul~. ,\UgU"'1 .mJ S,'plemlx:r
<br />\\ ilh ,I ...hghl in.:rc.I...... on Ihl" 1a,,1 ,.ulIpling
<br />d..!c. :\ilr<lll.' v.;I'o hduv. dl.'Il.....i,.1l limi.... III
<br />Prcw ill Re"cf\(lrr on four 01 Ihl.' ,.1l11plmg'
<br />.b~ '. .LI1d ;\ ,ea,on;r1 dedin..' \~;l' Ill'l
<br />,II'-.....'ryed. ,\ll1rlli>IllUlll r;lllg\.'d IHlm 1'>.:1"....
<br />llclt:.:1111111,' 1.lr)() pg/l, \llth n\l ,ca,on.t1
<br />P,llt\.'ffl.
<br />
<br />bd,,,,,n Tf' ..'l'nn'nlrOltllllh l;tlo.en frol11lh,'
<br />!xl;!l r;llIgl.'d fwrn ]..\2Il1_1:'OIl!=J'L Prt:....ill
<br />TP ,\)]l.:elllr;ttllllJ... r;III~,,'d from 17 _110 _155
<br />,u~JL '\"nh Slcrling TP d)n..-elllr.lllllll'
<br />r;mg~d twm 5-' II' J \lI1l~ Land l.lillnol
<br />,hln\ .1 '<.'a,onal tr<.'nd. In gCllt:raL TP
<br />...\)Il..:cntrali(ln, de.:n:a'>cd ,hfhlly in JUIIC
<br />,ll1d luly. bUl rndt:;t,,--d agalll b~ Ihe end III
<br />Ihe 'Iud~ IX'noll.
<br />
<br />J;I~'k'OIl Re"ef\ oir onhoph"opahate
<br />t PO .' I t:oll~'t:fI1ralion... rang~d from
<br />510 +1J7 j.lg/L excluding Ollt: "ample
<br />....lIh ('lllll'elllfalIOn" I:.....]ow Ihe delct:li(ln
<br />limit. Prew rll PO.' t:orKl:lllrJtlOn~
<br />rangt:d IWIlI ~ - IJh 1l:'!J1.. eX<.:luding onl.'
<br />...ample tlek,\\. lhe d.:le....llOn limil. ;-':nnh
<br />Slc:rling PO,. "'oll...enlration~ \\.~r~
<br />hdllw Ilk, dete~'lion Jimil 011 !Jf!I1. in
<br />lull..... hut ranged lrom .110 75!Jg/L for
<br />Ihe rt:ll1;llnder (It Ihe ...ampling period.
<br />(h..'r IlIlle. PO.; t:on..'l.'lltralion" ,howed
<br />nolr.:nd.
<br />
<br />Chlorophyll-./ ..:on..'enlr;lliOlh in..'rca:-.ed
<br />o\'er Ih<.' ...ummcr. \\ IIh ..:hlowphyll-u
<br />i;oll..:..'nlralilln...!or f'fl.....in tieing higher
<br />than Iho...t: found 111 Ja..:bon or ~onh
<br />Sterling. TII\.' mcdian ('oncenlrali,lIl of
<br />dll(lrorh~ 11'<1 at Prt:v..ill ReSef\'Olr "";1"
<br />l..\:! !J!!J1.. Tho: median nlll..'..'lllraliom ;11
<br />SIt:rling .tnl! J;l..'k-.l.)l) \~c:rl.' JfI pg/L and
<br />..\5 !JgJL. re"'pc'l'liwly.
<br />
<br />\I<.dianlulal nilrogcll OSI
<br />~'or1l'l.'ntrali(llh in Ja~'k,('n (~5.<;(J!JY
<br />Ll. Prt:w rll 1.\.100 ,ug/l.l and :\'onh
<br />SI\"fllllg t ._.:'i50 ~lgfL) re...er\'oir... c\t:"'l.'d
<br />lh\.' EP.\ ,laJldMd rc..'\llllmend.tlinn 01
<br />:'inti .ug/l.. \lcdr.lIllOlal phlhphof\lu,
<br />I TPI ,'un.:cnlr':llion, in Ja..'k'oll (~(l~
<br />!Jg/I..l. Pr...\~ill 1:!t>7IlWL) and :\!onh
<br />Slc:rhng ( I ~n )Jg/LI e\~'cedcd tht: EP.\
<br />rl.'(,olllrnc:ndatloll of 3_' !JgJL. \lcdian
<br />,,'hlllfOphy l1-a ..'oIK,'ntralillll' \.'\':l.'.:dcd
<br />Ihe rCHllllnll'nded valul' of :!.3J !JgJ1.. h~
<br />a !a..:lOrnl ,lIlea,1 ~O,
<br />
<br />Lin..'ar and multiplc ref'ro:,~ion, wcre
<br />u'cd 10 dctt;'nnilll' ,h..' reJatil)lhhilh
<br />Ix'l\\l'...n nutnelll (onn'ntralil}n'"
<br />,ltuli.:hiL'wphyll-.1 (Llhle 2), rp
<br />;ind chlm(lphyll-;l wt;'re po"iti\e]y
<br />Cllrrd;lll.'d tp=o.1111 al 'onh Slerling
<br />Ir:=l153: p=IU\..1r and Jack,on
<br />Re,>en oir, t r::(I,:,I): p=II,03 I. but nOI
<br />,II Prt'\~ill Rl."l'r\Orrlr:=C1.27: p=lI.ILJI.
<br />\lul1l\.lriatl' rc~re...~ion u...ing 1":'\ and
<br />1V ...trenglh..'nl'd the ..-orrelatlon \\ ith
<br />l.'hlorophy lkt al allot Iht' re'en ()rr....
<br />\lullr\J.riJ.I..' re~r"',,,inn u...ing
<br />inorganil--' and TP re,ulted In thl'
<br />'twng\."t u)nd,lIrnn at 'onh SI.:r1ing
<br />Re"..'I' (lrr.
<br />
<br />9
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