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<br />". . <br /> <br />. . <br /> <br />. <br /> <br />. <br /> <br />Project with <br />all purposesY <br />Elevation Acre-feet <br /> <br />Project without <br />flood contro I.Y <br />Elevation Acre-feet <br /> <br />Top of dam <br />Top surch arge <br />Top flood control pool <br />Top joint use pool <br />Top conservation pool <br />Top inactive and dead pool <br />Total reservoir capacity <br /> <br />4454,0. <br />4448.5 <br />4428.5 <br />440.4.3 <br />4399.0. <br />4351.0 <br /> <br />4451.0 <br /> <br />636,000 <br />475,0.00 <br />75,000. <br />373,000 <br />50,000. <br />973,00o.Y <br /> <br />440.4.3 <br />4399.0 <br />4351.0 <br /> <br />977 ,00.0 <br />75,000 <br />373 ,0.00 <br />50,000 <br />498,000Y <br /> <br />11 Adjusted by data from the Narrows Unit, Final Environmental <br />Statement, dated May 14, 1976 <br /> <br />11 Initial capacity <br /> <br />Project Water Supply <br /> <br />The following tabulation displays the water supplies on which the <br />benefit and repayment analyses are based. A supply of 102,00.0. acre-feet <br />annually of new water would be stored at Narrows Reservoir. An annual <br />supply of 31,000 acre-feet result ing from acquisition of lands with <br />Weldon Valley Canal rights will also be available for sale at the dam. <br />~o benefits have been claimed for the acquired Weldon Valley Canal water <br />because it is currently being used. for irrigation and will be part of <br />the supply used for that purpose after development of the Narrows Unit. <br />The 10.2,0.00 acre-feet of new project water yield from Narrows Reservoir <br />will result in 24,500 acre-feet of divertible r:eturn flows. Return <br />flows have been included in the benefit analysis but there is no basis <br />for repayment since the United States has no control over their use. <br /> <br /> Benefit Analysis Repayment Analysis <br /> ( acre-feet) ( acre-feet) <br />New water supply 102,00.0 102,000 <br />Usable return flows 24,500. ------ <br />Acquired Weldon Valley Canal rights ------ 31,000 <br />Total for analysis 126,500 133,000 <br />Irrigation Use 101,500 108,000. <br />M& I use 25,0.00 25,000 <br />Total for analys is 126,500 133,000 <br /> <br />3 <br />