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<br />...;......(>. ,- <br />J:. ,. V \j <br /> <br />the inbasin consumptive uses. The quantity of these uses is esti~ate~ b:( <br />applying unit water use factors to estimates of the land areas be1ng 1rr1- <br />gated. The Bureau of Reclamation estimates of Colorado River water deple- <br />tions above Lee Ferry for the 1977 ..rater year are: <br /> <br />Acre-feet <br /> <br />Inbasin Depletions <br />Transbasin Diversions <br />Reservoir Evaporation <br /> <br />2,300,000 <br />5L,O, 000 <br />593,000 <br /> <br />Total, Upper Basin <br />Depletions <br /> <br />3;433,000 <br /> <br />Table 3 shous diversions less measured return flO\"rs for the major <br />water users in the Lower Basin during the past five calendar years. As can <br />be seen, Lower Basin use during 1977 increased by 35L",OOO acre-feet over <br />the previous year's use. This increase was the result of increased diver- <br />sions by r~tropolitan 'later District of Southern California. The District's <br />supply of California State \later Project Hater uas greatly reduced by the <br />severe drought in California. Ample storage on the Colorado River allowed <br />the District to replace its State Project uater uith Colorado River water. <br />As in 1976, a tropical storm in Southern California reduced expected diver- <br />sions by the irrigation users. <br /> <br /> TABLE 3 <br />DIVERSIONS LESS ,j.1EASURED RETURNS <br /> FOR MAJOR WATER USERS <br /> LOWER COLORADO RIVER <br /> 1973 to 1977 <br />(Thousands of Acre-feet) <br /> Co1cndar Year <br />California 1973 1974 1975 1976 1977 <br />Metro~olitan Water Dist. 1,165 1,125 782 800 1,285 <br />Palo erde Irrig. Dist. 475 475 451 387 431 <br />Imperial Irrig. Dist 3,008 3,133 3,047 2,831 2,717 <br />Coachella Valley Co. <br />Water District 512 552 566 516 499 <br />Yuma Project, Res. Div. 48 44 46 47 41 <br />Subtotal, California 5,208 5,311 4,892 4,581 4,973 <br />Arizona <br />Colorado River Indian Res. 2g8 293 317 286 321 <br />Gila Project 553 618 599 548 497 <br />Yuma Proj., Valley Div. 220 2213 231 213 191 <br />Subtotal, Arizona 1,061 1,139 1,147 1,047 1,009 <br />Nevada <br />Pumping from Lake r,iead 81 $1 $6 90 91 <br />Mohave Steam Plant 12 13 1~. 15 14 <br />Subtotal, Nevada 93 94 100 105 105 <br />Total, Lower Basin 6,362 6,544 6,139 5,733 6,087 <br /> - 4 - <br /> --- <br />