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<br />~.-'--"~l"23tJ <br /> <br />(Water resources) <br /> <br />Eastern Slope <br /> <br />Except for a limited amount of unnllocated flood flow, runoff which <br />originates in the Arkansas River watershed would not be used as Gunnieon- <br />Arkansas Project vmter supply for irrigation. Howe~er, where naturnl <br />stremr,flow exceeds the local \'lo,ter users demands and minimmn fish flow re- <br />quirements, Arkansas River water could be utilized in project operntion <br />for the generntion of power. This is not a Bonsumpti~e use of water and <br />the flow diverted for power genero.tion would be returned to the river. <br /> <br />The severnl existing small transb~sin diversion canals and tunnels <br />which divert water from the Color~do River wutershed to the ~rkansas River <br />watershed ''lOuld continue to divert under project operation. Table 7 shows <br />the annual diversions of these structures. The WQt6r diverted would be <br />utilized as Arkansas .:tivcr wnter" for gcnerc.tion of powor. <br /> <br />. <br /> <br />In orde.r, to ':stim,o.te the quo.n-ti ty, ,of power th ,t could bo gener,~ted <br />by pr0iC'ct pCl},rerplc.ntr.;, it W:;l.S ncccssa.r"y to supp18m\.:mt cxistir.g :records <br />v.'ith add',tLm:-.l esti:n"tos of the ouantity of avail::t,,:i,e runoff which 0 'ig-' <br />inetes nbGV8 6Cl.ch project strlJ~b!re. The Arknnsr.s River \'lo.S divi.ded Jnt.o <br />three reach"s abovo Salida in order to fo.cilito.te 'runoff estimo.tes.' .From., <br />the hco.dY1Clt2rs dovmstrecJI\ they Qre: Upper .\rkansc,s Diversion o.nd Stomge <br />Unit, Twin Lakes Stor~ge Unit, and ~r~nite-Salidn Diversion Unit. The <br />di~ertible flow origin~ting in these w~tQrshods WQS determined individ- <br />'unlly, ~nd v~rious combir,o.tions or runoff originQting ~bOY0 project struc- <br />tures were ffio.de for operation studies. The power system to be sorved is <br />designated and is hereinafter referred to as the Arkansas Valley Power <br />System. <br /> <br />Upper Arkansas Diversion and Storage Unit <br /> <br />Wator would be divorted from the East Fork and the Tennessee Fork of <br />the Arkansas River to Sugar Leo.f Res,rvoir by a canal neQr elevation 9,880 <br />feet. The existing Sug~r Loaf Reservoir would be enlo.rged to a totnl Ca- <br />pacity of 117,000 acre-feet. The co.nal eo.pacity would be 250 second~fcet <br />from Enst Fork to Tennessee Fork and 500 second-feet from Tennessee Fork <br />to Sugar Loo.f Reservoir.- Preliminary studies indic~te that these CQP~C- <br />i tics aro adequ"te. ',rater import"d from the Fryingl'an River would also <br />be stored in Sugnr Lonf Reservoir. l'onthly inflows from the Fryingpnn <br />Di~ersion are included in the preceding section of this appondix. <br /> <br />Estim"tes of the qu"ntity of water th~t could be diverted by the <br />cannl from Enst Fork to Sugar Loaf Reservoir o.re based on actual records <br />and estimntes obtained by correhtion of the stations East Fork and Ten- <br />nessee Fork near Leadville. Estimates of runoff for periods of no record <br />were obtained by correlQtion with the Arko.nsas River gage at Granite. <br />When no well-defined relationship wns shown to exist between flows at <br /> <br />-.-----, ,--~-,-------,- <br /> <br />35 <br />