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<br />ANNUAL REPORT <br /> <br />1973 Ol)eration of the <br />Colorado River Basin <br />1974 Projected Operations <br /> <br />(prepared pursuant 10 the Colorado River Basin <br />Project Act of 1968, Public Law 90-537) <br /> <br /> <br /> <br />Bureau of Reclamation <br />Gilbert G. Stamm, <br /> <br />January 19H <br /> <br />Table of Contents <br /> <br />Page <br />Map - Upper Colorado and Lower Colorado River Basins Inside Cover <br />Authority for Report .................... . ii <br />Introduction ..."...................... . . . ii <br />Actual Operations under Criteria - Water Year 1973 . . . I <br />Upper Basin Reservoirs . . .2 <br />Lower Basin Reservoirs . . . 14 <br />River Regulation .. . . . . . . . . . . . . . . . . . . . . . . . . . . 20 <br />Beneficial Consumptive Uses . . . . . . . . . . . . . . . . . . . . . 2\ <br />Upper Basin Uses .... . . . . . . . . . . . . . . . . . . . . . 21 <br />Lower Basin Uses and Losses . . . . . . . . . . . . . . . . , . . .' .... 21 <br />Water Quality Control . . . . . . . . . . . . . . . . . . . . . 22 <br />Water Quality Operations during Water Year 1973 . . .22 <br />Future Water Quality Control . . . . . . . . 22 <br />Enhancement of Fish and Wildlife . . . . 23 <br />Upper Basin ....... . . . . . . . . . . . . . . . . 23 <br />Lower Basin ............ . . . . . .. . . . . . . . . . 23 <br />Preservation of Environment ..... . . . . . . .. . . . . . . . . . 25 <br />Projected Plan of Operation under Criteria for Current Year . . . . . . . . . . 16 <br />Determination of "602(a) Storage" . . . . . 26 <br />Lower Basin Requirements , . . . . . . . . . . . . . . 27 <br />Plan of Operation-Water Year 1974.. ,29 <br />Upper Basin Reservoirs . . . . . . . . . . . . . . . . . . . . 29 <br />Lower Basin Reservoirs . . . . . . . . . . . . . . . . . . . . 33 <br />