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<br />,. <br />I;' <br /> <br />w <br />en <br />C'l <br />C'1 <br /> <br />~ <br /> <br />r <br /> <br />" <br /> <br />UelTED'SToTES <br />DEP.~RT' ;ENT 'JF THE ll'lTElUOR <br />BUR":AU OF R~GU''ATlON <br />Washington 25, D. G. <br /> <br />May 27, 1955 <br /> <br />!he Secretary <br /> <br />of the Interior <br /> <br />Sir: <br /> <br />This j.s my proposed report on a plan for Hc'iillan Delta <br />'Nater Salvage Channel, Pecos River Basin, Ne", Nexico. It is based <br />on and inclLldes the accompanying November 18, 1954, report of the <br />ActinC Regional Director, 3Llreau of qeclamation, Amarillo, Texas. <br /> <br />The ref,art presents findings with respect to a plan ad- <br />vanced by the Pecos River Commission for construction Qf a cllannel <br />through the delta area upstream from the existing ;'~c:"'illan Reservoir <br />of the Carlsbad ProJect in New l'!exico to provide for th,] salvage of <br />an annual averace of about 24,490 acre-feet of water presently being <br />lost through non-beneficial conswnptive use. <br /> <br />The ;.Jclfillan Delta area has been formed by sediment depo- <br />si tion in and abo'.'e the reservoir S).nce 1894. :Ic).Tillan Da<1'. was aC- <br />quired and rehabilitated by the Bureal! of ReclaClation in 1908 ;Jut, <br />by 1932, sedi'1~nt accuml!latiQn and reservoir leaka~e reduced the <br />effectiveness of the stora~:e cap~.city of the reservoir. This led to <br />construction of the uDstream .'\larnof{o:rdo R'?servoir lflhich was comTlleted <br />by the '3Llreau in 1938. S'lbseql.lent vrater shortarc.8s prompted the in- <br />vestis~ati 1n of r.leans by vrr:icr. water lJein.7, lost thr'J1.lgh non-be~' ~i'icia1 <br />use in the j';cNillan J:1eservoir Del ta cOllld be s"lvaged. A plan for a <br />bypsss chanrlel to caITY the low flm's of ':,he river and il'rigc.tion re- <br />le8s0s from the Ala~ogordo R2servoir ?rolmd the delta ere" VIP.S proposed <br />by the BLlr88Ll in 1950. The Pecos Riv.,r Commissi. on, h01ii''ever, has con-' <br />eluded frc~ its intsnsive studi",s an:j coopErti~i ve investi[;:J.tic-DS l:~ti th <br />the llureaLl 2nd otb.cl' inter"sted 2.r:r;ncj-,'s t11at a pJ.a~ embodyin~ a flood- <br />1iiay to expcdite flood flo;"[5 through the' delt.:'. "'ioLlld C:;c of g"",ater bene- <br />fit in spiLr 'of tl"!3 incr8as2d rate of sedimentation it ';"{oltld C:::\l3C in <br />McMillan Reservoir. <br /> <br />The proposed plan, .'1S spocifically 2,'vrClced by the, P8COS <br />River Commission on the b:,sis of the cooperative stLldies, consists <br />rrincip~lly of a channel heading structure, 3 lo~-rlo~ conveyance <br />chml'1eJ., " flood;"?}' Ie '.'08 , ilnd Cl clcaN,d flood'7ay extending from a <br />point about thmc miles northeast of .\rtcsi<~ southii<?rd along the <br />east side of th€ del b p.r.O~. j.nto ;,!cHillan Reservoir, a dist2nce of <br />2.bOLlt 16 miles. The c?pacity 'Jf thc cl12.nnel convey.once ".'oLlld be <br />1,500 Cll')lic feet per socond; t110.t of tho flood'iOY 40,000 CLlbic fcc"t <br />per second. <br />