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<br />WATER SUPPLY <br /> <br />Irrigation supplies (acre-feet) <br />Effects on Colorado River <br />Increase in salt load (tons) <br />Stream depletion (acre-feet) <br />Increase in salinity concentration <br />at Imperial Dam (mg/l) <br />Increase in salt load <br />From concentration due to stream depletion <br /> <br />IRRIGATION SERVICE AREA (acres) <br /> <br />Full service land <br />Supplemental service land <br />Total <br /> <br />ESTIMATED COSTS <br /> <br />Construction costs (October 1975 prices) <br />Milly K. Goodwin Lake <br />Crystal Creek Diversion Dam <br />Curecanti Creek Diversion Dam <br />Black Mesa Conduit <br />Fruitland Canal <br />Gould Feeder Canal <br />Laterals <br />Drains <br />Enlargement Unit Development <br />Permanent operating facilities <br />Land acquisition and range improvement <br />Recreation facilities <br />Total Cost <br /> <br />Annual operation, maintanence and <br />replacement costs <br /> <br />ECONOMIC ANALYSIS (lOO-year period at 3 1/8 percent) <br /> <br />Benefits <br /> <br />Annual equivalent c~sts <br /> <br />Benefit-cost ratio <br /> <br />43,100 <br /> <br />.7,530 <br />21,300 <br /> <br />0.7 <br />2.2 <br /> <br />11,940 <br />6,310 <br />18,250 <br /> <br />21,000,000 <br />35.0,000 <br />195,000 <br />45,500,000 <br />6,7.50,000 <br />750,000 <br />l,8l5,OOO <br />620,000 <br />56,000 <br />380,000 <br />940,1300 <br />900,000 <br />79,250,000 <br /> <br />170,000 <br /> <br />3,480,000 <br /> <br />2,969,000. <br /> <br />1.17:1 <br />