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<br />o <br /> <br />(":":) <br /> <br />~.. <br />-J <br />CJ <br />o <br /> <br />and Havasu. Water losses between Davis and Imperial Dams, from <br />phreatophytes and the river's surface, average hearly 600.000 acre. <br />reet per yent". rreccnt me:1surements indicl1t{! that irrf.gated ap;ricu1. <br />lure III till' Lm~('r 1111!:ill, pt":luwt"lly frol11 P!l1:t(~Il: !Iud Pnlb Vel'';\(. Vnllcys, <br />adds over 200,000 tons of solts per year to the river by the salt <br />pickup process. <br /> <br />~re Increares in salinity <br />. Severnl major water projects arc now tmdcr construction in the <br />Upper Colorado Itl.ver Dasin, and othern have beeh l.Iuthorhcd and are <br />m'!111til1e fUlldA [or desIgn and constructfOIJ. In addition to these Ill... <br />ready authorized projects, there are a number of additionalprcji!cts <br />for ,'lhich feaSibility reports are being made. These potential [:lrojects <br />are identified in recent studies of the Bureau of Reclamation (USBR) <br />and the Upper Colorado River C011lltJission. With some adjustments to these <br /> <br />9tudies to reflect the slowdown in fundine of reclamation projects <br />thl1l: heW devdopNl ih recent yel1J:s, estimates have been developed of <br />future water uSe in the Upper Colorado River Ba~in. Based upon these <br />estimates, the Colorado River Board has projected that. unless salinity <br />control measures are undertaken, the river's salinity at Lee Ferry <br />will increase by oVer 30 percent by year ~OOO. BecaUSe of changing <br />watcr--sl1lt relationshi.ps caused hy Lower Basin uses and water losses, <br />"'ti~~ ~~~iJ6~T'j;p~~t .~{ salIll1tyincreases at Lee Ferry is approxi- <br />"".."""" ...'-~ <br />"'_, 1;-'_"...,.. '" <br /> <br />mately doubled at Impertal Dam. <br />, <br />The Colorado River B~~rd's report concluded that, Without salin- <br />ity control measures, the average salinity at Parker Dam, the poiht <br />where The Hetropolitan tlater District of Southern California diverts <br /> <br />-3- <br /> <br />(. <br />,~ .' '.;' w ,1J," ~,.:'l; <br />