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<br />'. <br /> <br />I. <br /> <br />. <br /> <br />. <br /> <br />., <br /> <br />c. <br />( 1 <br /> <br />PART III <br /> <br />COLORADO RIVER BASIN <br /> <br />a. <br /> <br />Irri~ation and Incidental Uses <br /> <br />tl'f,oCil) <br />sse ,000 acres <br /> <br />of <br /> <br />Irrigation water consumptively used on <br /> <br />irrigated cropland was about 1.038 million acre-feet for 1970 ave~age. <br /> <br />conditions. Consumptive use rates were computed utilizing the Bldney- <br /> <br />Criddle Method and latest available data on local seasonal crop <br /> <br />coefficients. Present average irrigated acreage and cropping pattern <br /> <br />data were used, and consumptive use adjustments were made to reflect <br /> <br />present average short water supply. <br /> <br />Reservoir evaporation associated with irrigation. was estimated <br /> <br />JO. ~ <br />, <br /> <br />to be about 30,000 acre-f~et. Ir.cident~l u~c on w3t2r-CCn$umir.7.~ <br /> <br />., ' <br /> <br />noncropped areas was char~ed on those areas which consume water <br /> <br />incidental to the cropped lands as a result of the practice of irri- <br /> <br />gation. Incidental consumptive use was estimated at 209,000 acre-feet. <br /> <br />b. MuniciDal and Industrial <br /> <br />Basic municipal and industrial use by the people in the basin is <br /> <br />about 19,000 acre- feet. Evaporation from municipal reservo iI'S is <br /> <br />included. <br /> <br />c. Hiniil~ and Hi~eral ProceGsin~ <br /> <br />The mining and mineral processing water use in 1970 was about <br /> <br />111 ,000 acre-feet. The Colorado portion of the Colorado River Basin <br /> <br />estimates were cop'puted primarily from the Bureau of Nines I 1962 <br /> <br />water ca:lvasz, and statistics. <br /> <br />1JI. <br /> <br />l~ -H <br /> <br />0303 <br /> <br />2/ <br />