Laserfiche WebLink
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />-I <br /> <br />I <br />I <br />. <br />I <br />"~I <br />I <br /> <br />'Irjl /', : <br />l " <br />.f." '.' <br /> <br />\\ <br /> <br /> <br />" \ <br />lDIlke a lo-year comm1 tment to reduce winter drainage pumping of <br /> <br />\ I <br /> <br />hi~ saline water accordingJS./ PreJ1 m1nA""Y studies indicate that <br /> <br /> <br />the peak sa.l1nity of Colorado River water under such an operation <br /> <br /> <br />would be slightly below 2,000 ppm. This proposal offers the most <br /> <br />economical and :lJmnediate method of significantly 1JIIproving the <br /> <br /> <br />quality of winter flows in the Colorado River. It could be used <br /> <br />independently or in conjunction with any of the proposals that <br />follow. <br /> <br />- <br /> <br />As a result of studies made to date, it is recommended that a <br /> <br /> <br />three-phase construction and operational program be undertaken on <br /> <br />the Lover Colorado River, as outlined below. <br /> <br /> <br />Phase 1 provides the most feasible method (other than the <br /> <br /> <br />increased cotton a1J.otments) of reducing the peak salt concentration <br /> <br /> <br />in water delivered to Mexico during the low flow winter months, end <br /> <br /> <br />would be accomplished through selective deep well drainage pumping <br /> <br />in the Wellton-Mohawk area. To a1J.eviate the situation by October <br /> <br /> <br />1963, we proposed to utilize, with modifications, the existing Wellton- <br /> <br /> <br />Mohan -dJ: a.in&.tse ,:J.a.uucl, ..UU<l L 6,-e:X::l:st1ng-ara:tns;ge-ve1.ls, annan <br /> <br />additional 25 new drainage wells and related collection system to <br /> <br />be constructed under a crash program as soon B.B funds are ava1l8ble. <br /> <br />With a total of 92 wells of varying quality, there would be sufficient <br />selectivity so that we:Lls could. be pumped in a manner to vs;ry the <br />quality of drainage water according to the quantity of water ava1lable <br /> <br />in the Colorado River for dilution. In other \lOrds, only we:Lls of <br /> <br /> <br />better quail ty would be pumped during the winter months when there <br /> <br />is low flow in the Colorado River, yet sut'ficient total ground. water <br /> <br />pumping would. be continuing within the District so as to prevent <br /> <br />11 <br />