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<br />. <br /> <br />. <br /> <br />MODE-2 channel. The MODE-3 channel below Morelos D"m will remain operational for <br />emergencies. The Bypass Drain will begin at tbe terminus of the MODE at Morclos Dam <br />"nd will be adj"el'nt to the YLllm Valley Levec on the east side of the river channel <br />nearly all of the 16.0 miles to the Southerly International Bound."y. The bou'l'.lary crossing <br />will be Ill'ar tilt' CalaraLlo River west or San Luis. ML'.xicn will CO'lstrLlct the remaining <br />34.7 miles (55.8 kill) of the Bypass Drain. at United States expense. from the Southerly <br />International Boundary to till' upper end of the Santa C1a"r Slough. <br />D.3. MODE Siphon <br />A I ~-root-6-illch-(Jial11('kr sl'llliL'irclllar metal f1ullIe' ;.,ection of till' MODE has <br />bCell replaced with a buried circular COllcrl..'tc.' siphon. ThL' fhllllL' W~JS :.vijaCl'llt to tile <br />Colorado River in Yuma at the foot of I'rr",n Hill. The siphon is 3.491 fed long anel <br />10 fed in diameter. and W;JS completed in June \97(L The l'lunll' h;HI bel'n llsed 5.l'vL'ral <br />YC;HS beyond its intcll..:kd telllpor:lry life and had dctnior:lted. <br />0.4. Wl'lItOIl-fvlo]wwk Irrigation Efficil'l11'Y IlllproVL'Il11'llt Progn.llll <br />An Irrigation Ellk-ie-lll'Y ImprOWllll'l1t Progr:J.lll IS ill progress in till' <br />Wl'lltoJl-~lol1awk Division to reducL' drainugL' flows from jrrig~ltioll. All dr<lI1l~lgL' is jlllmpl'r.1 <br />from till' aquifer belleath irri:;..Ikd l:lllds to mdintain a rk-;ircd minimum watl'l" tahle del'tl1 <br />of 8 fed. TilL:' program is :ILtllally a com\)i!l~ltion or sl'veral sll\)prograllls.--Irri~;_~ltioll <br />MJllagCJ11l'nt Services. onLHlll improvl'mcl1ts. researl'l1 ,lnd dl'lllollstratiolls. :lccekratl'd <br />edllc.ltion. .lnL! the \\'ork of the Tedlllical Field Committet'--<InLl. in conjunction with thL' <br /><.1lrenge reduction program, fUllctions to improve thl..' aver:lge irrigatioll efficit'!1L'Y In the <br />Division from 56 pefl'fnt to 64 pt.'rccllt by till' timc tilt' l.ksaltin~ plant comes onlilll' <br />in \981. :1ntl lIltimatdy to:1 level of 7'2 percent. This will result ill a reduction of drainage <br />110w, from 214.000 acre-feet annuolly to 11>7.000 aere-ket .rn.wally by 1981. a"d <br />ultimately to 136.000 acre-feet annually. <br />0.5. \Vellton-Mohawk Acreage Reduction <br />Thc irrigabk ia"li of the Division will he reduced to approximately 1iS.000 acres <br />from the 75~OOO acres authorizt.'l..l for development. This will reduct' existing marginal <br />operations of dev~loped land, :JnJ prevC'nt furtht'r development of undeveloped 1:1111.1. Part <br />of tht.' land i~ still in Federul ownership, nnd most of the ~)~lIul1ce will be llcquirt.'d with <br /> <br />. <br /> <br />7 <br />