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<br />PII '"\.. ,r! <br /> <br />WATER "''EEDS <br /> <br />The Omaha District was directed to determine costs for a range of <br />flows for the Fort Randall-Bonny Reservoir diversion route. The maxi- <br />mum flow to be diverted was determined from economic studies performed <br />by the individual States. The imported water needed by each State is <br />shown in table 1. <br /> <br />TABLE 1 <br />lRRlGATIO~ WATER NEEDS <br /> <br />State <br /> <br />Year 2020 <br />Water Demand <br />(AFA) <br /> <br />Required <br />Dependable Yield <br />at Terminal Storage <br />(AFA) <br /> <br />Colorado <br />Kansas <br />Ne braska <br />New Mexico <br />Oklahoma <br />Texas <br /> <br />Total <br /> <br />250,000 <br />862,000 <br />1,783,000 <br />302,000 <br />334,000 <br />525,000 <br />4,056,000 <br /> <br />278,000 <br />958,000 <br />1,981,000 <br />336,000 <br />37l,OOO <br />583,000 <br />4,507,000 <br /> <br />The demand shown In the first column is the amount of water needed <br />at the farm headgate to restore and rnaintain existing (1977) irrigated <br />lands which would otherwise go out of production or revert to dryland by <br />the year 2020. An irrigation management strategy of voluntary conserva- <br />tion was assumed. No new irrIgated areas Were to be served. The second <br />column includes a la-percent loss between terminal reservoirs and the <br />farm, as specIfied by High Plains Associates. <br /> <br />The Omaha DIstrict was directed to serve the demands of ~ebraska, <br />Colorado, Kansas, Oklahoma, and one-third of Texas. This amounts to an <br />onfarm demand of 3.40 MAFA. Losses enroute, however, would require a <br />diversion of 4.40 XAFA from Lake Francis Case. These losses and the <br /> <br />other canal sizes that were studied to develop cost curves are dis- <br />cussed later under "Transfer Routes." <br /> <br />A9 <br />