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<br />2992 <br /> <br />: <br /> <br />spillw~y design flood could b0 converted to other uses by inst~llation <br />of auxili~ry.spillway capacity. <br /> <br />The Narrows site was found to be the most c.conomical si t~ <br />~vailabll? It ,.110HS the crEetion of the fCr€et€s"t benefits froln Fell <br />aspects; it is the best plan from 2n engineering standpoint in thet <br />SLepil~l? problems are less than at other sites; it has grc.~tcr flLxi- <br />. bility to accommodate changing conditions; end it is !!lakes possihl'.' thE <br />bEst use of thE water avuilable. <br /> <br />Plan of Developnent.-->l'hE major fe"ture in the plan of development <br />will bE the Narrows 1.1e,11 on thE ::'outh Pl,:;tte River. The. channel of <br />Bijou Creek will be cl12ngEd to direct the flow into the rEservoir so <br />co,nphtc regul~tion can be. giVEn to all floods ,Ihich ,night occur on <br />that strcum. ThE Union P~cific Rc:ilroad, Stc.te Highw2.y 1411, county <br />roc.ds, power linEos, tElephonL lines, anc' other utilities will be reloc- <br />atEd so service can bE maint~inEd. <br /> <br />The d2Jn and dikE across Bj jOll Creek will h:.'vc a totccl crest lc.nr~th <br />of 34,000 fGet end 2 hEifoht [,bOVe foundution of 147 f<c~t and will con- <br />tain [_Pf,roxill1atEly 16,300,000 cubic yards of materie.l. RiVEr outlets <br />2nd s1'illw2Y >Jill be construct[d on th~ north side; of the rivLT. A <br />sEporc.te outle t will b~ provided to J1laintcin serviCE to the Fort dorC'.n <br />Canu.l. <br /> <br />ThE initial allocation of the use of visual spece iI, the proj,(}sed <br />rc8Lrvoir is ~s follows: <br /> <br />SupE.rstor2g~ .. ....... <br />Flood control.. ... . . . . <br />Joint use (flood ond conservetion) <br />Cons(rvation . . " . . . . <br />DC2.d storage (controlled by hec.d requirEd <br />at Fort i10rgan Ccn2.1 outlf.t) <br /> <br />. . <br /> <br />818,000 <br />250,000 <br />75,000 <br />323,000 <br /> <br />2crc-[cct <br />II II <br />" II <br />" II <br /> <br />Tot.:l. . . . . . . . . . . . . <br /> <br />52 000 II II <br />_.:.:..::..l._ <br /> <br />1,518,000 acre-feEt <br /> <br />Th~ inviole. tc. flood control Sp2CC of 250,000 Clcce-feEot 2nd the <br />75,000 aCre-fEEt of joint-usE Sp2CE hevE bEel! [,l';rEEd UPOl, by tIlL <br />Corps of ~ngin~Ers as being thE cap2city required to control floods of <br />record on the South PIGttc Rivc.r. This spacE will also be suffir:iEnt <br />to control Bijou CreEk floods. The ,jointnus", pool is to be opc.ret.ld <br />jointly for flood control 2nd cons~rvGtion during the snowmelt period-- <br />April 15 to June 15. The flood control Sp2CE will be used ~ny time <br />the conscrvc.:tior. c2-p8city is full ,end th~ river inflow EXCEeds 10,000 <br />sE:cond-fcEt. S~dim(ntation will l-.ncro2ch on thE: "tllocetions giv8n <br />abov~, and it is E. stimOltcd th2 t "fter 50 Years of USG thc. conSLrva tion <br /> <br />3 <br />