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<br />I>ecember
<br />
<br />abk 10 divert W<:llcr lor ~torage in Ih~~e
<br />re-..:rvoir.. Often wat...r mamlgef'> are
<br />not gra~'cd wilh Ihe oplion of lilling the
<br />re-..:r\'oir~ ......ith higher l.jualilY water,
<br />Irl~lead, m;U1al!e~ lllU~1 till when lhe\'
<br />- ,
<br />are in priority,
<br />
<br />Thi~ projCl.:I examined lhe' m-re-.ep.oir
<br />nitrogen and pho~phorou~ .,:on':e'lllration~
<br />in relalion to Ihe re~en'Olr hiologh,:al
<br />re~pomc. ,,'> rnca~ured by ~'hloroJ1hyJl-
<br />II, The l1elcrminallon of thc nUlricnl
<br />- chlorophyll.a rclation"hip" w III aid
<br />in c\'alualing off,\.'hanne] rc"cnolr
<br />lrophic ~tatu~, prcdu':llllg eUlmphi\,';lltOn
<br />potcnlial. and idenllfy illg re-.cr\mr
<br />managemenl Orllon~. Dirk-renl
<br />Trophk Slalu~ lndi\.'e" nSl! wen:
<br />evalualed in lhi~ "tudy. Thc tllea~ured
<br />high nUlrient concentratiorh, lad. (If
<br />previou,> re..er\'otr "tudie..., and pendlllg
<br />
<br />COLORADO II'A TER
<br />
<br />~t;lle nUlrienlCnleria rcnllllmendalion...
<br />promplc:d lhi~ ~ludy,
<br />
<br />'Iudy "'ill'~
<br />The ~ludy fll\:u..ed on three oll.{:hannd
<br />"i(lrag~ re...en'oir... ]o.:aled in nonh \.'entra]
<br />Colorado In lhe South Plall.: Rivcr ba...m:
<br />J;,u.:k'>{l[} Re"cnoir. Prewill Re""'T\Olr
<br />and ~ol1h Slerling Re~(T\'(llr t Figure
<br />II, The prillla~ purpo~e ot Ihl." (lft-
<br />('hanncl 'loragt' rC'l'noir... i, to pro\ ide
<br />irrigation WJlt'r. whl\.'h typil.."ally lead, hI
<br />a ,igllllll.."ant annual change in re'er\'llir
<br />\'olullll:'. h....k,on and SIt'rling RC'C:r\'Olr...
<br />,nc operated a~ Slale Park~ and Prewllt
<br />Rt'....:r\'olr i\ a ~lale wildlile area. :\11 thr,'C:
<br />pro\ide r~....realinnal opponunlti~, k;lding
<br />t(1 in("fca~ed publi(' pre~...ure lor nm~lalll
<br />water k-\"ds anJ e>..celk-nl watc:r l.jualilY
<br />{~laurier 20011.
<br />
<br />Fil.:Url' I. Locatiun uf Ihn.'l' ~Iudy n:'l'nnir, in lht' SHlllh l'htlh.' Hi\t:r Ba~in.
<br />
<br />2002
<br />
<br />\It:lhcld...
<br />~utrienl ('ol1\:enlrali(ln~, .:hlorophyll
<br />l"ork'enlralion~ a.nd phy..il';'11 parameter,
<br />were mea,ured al ea('h re~':f\'oir on 10
<br />~ampk- da~... over Ihe 2fM)1 grow ing
<br />'ea,on l.\pril - o..:too<rI. ""utrielll
<br />nm.:etllratton ~'hange~ ;,md prim;u'y
<br />produ....lion \\ere ....omp;lIl.d \\ilhin and
<br />lxlween lhe re...ef\ 011""', IS] llllll.k"
<br />for prclli....lioll 01 primal! prodw,:tion
<br />were e\"aluated u'lng Ihe,e nutri.-1l1 and
<br />.:h]oroph~ II data.
<br />
<br />PhY~Il"al parJ.mcter~. mdudlllg Se('l'hi
<br />deplh. ~l're wlle('lcJ ;'Illhrc~ ...ampling
<br />lo\:alion~ at ~onh Sl~rling .md h('I,;.,on
<br />Rc:....n'oll'<o (Hall 2002~. All ~ampk~ of
<br />PrewllI RC~<.'f\otr wen: takc:n from the
<br />bOa! dock. Ph~ ~i....al dala werc l"oJlel"led
<br />using the 1'ello\\ Spring~ Instrumenl~ @
<br />fl92tl or'~ hOll-Xl.:<.l probe, Dale, time.
<br />
<br />South Platte Basin ReseNoirs
<br />
<br />----
<br />----- ...... --......--.............
<br />~ . -- .......,.~--....
<br />~--~ .......... -
<br />,--..... --- . /' ~-...- . '-
<br />--=-- - ,.-~ ." ..----....... \.
<br />.... --? -... ~ ,,~...,..-...--- -'-'-"'--' - ~ ~
<br />........~-l -. ,-~ ~ ----- N~ Sterling R.w~r::.---'/"
<br />..J?_ ..)".... \~\......j '_"\ J .""- _--..:..~ ./- -.... r--
<br />.~- 'I' ,~ ~. s -.:__ ~..... ,
<br />(""-----.;----"-. '~.... " \ ")-- .-..,....-" -"'"'. 7' t-
<br />, ..-'.-..... Fl U$r. " \., I ~ - '-:-:-~.
<br />) -...........;~ .o(~.,.----~, " Jech.on R.~""'Olr ~~ ~
<br />--- ~~~_.. -::..... ~..."... ('-
<br />--.,.-. ,. --~"~-'~"";ld...::"'" fe Pr R
<br />'--_4....'-.-~.( 1_; .:t--i u" -1' p. . ewrt 8SeNOIr
<br />,---=:;:::;>-., .." . J) , _' _ t- --.,,-~
<br />'__.J ->-=.--, t I ... J\'" . '-
<br />:-.-.:~-=-,.~ --A I 'f", ~ '.../ \ "--
<br />.........." _'f ~ . .~...~~, A'
<br />---- ~..' ).)
<br />-' - _.- . {.., ....-' ,~
<br />--............- .
<br />-~*
<br />.~ _" .-' fo.rrv.......
<br />
<br />""--,
<br />
<br />--~--....
<br />
<br />-,~
<br />
<br />~
<br />
<br />~
<br />,
<br />,
<br />
<br />,
<br />
<br />'\
<br />
<br />-~
<br />".- --
<br />
<br />'<>.-
<br />
<br />100
<br />
<br />o
<br />
<br />-=----
<br />
<br />~
<br />
<br /> "
<br /> , " i
<br />, '1
<br />{
<br /> ,
<br />. ~
<br />
<br />100
<br />
<br />200 KilOfTMoIHI
<br />
<br />~
<br />
<br />w+,
<br />
<br />5
<br />
<br />x
<br />
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