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Irrigation water requirements are satisfied from both surface water and ground water. <br />Table 18 shows the average water supply-limited consumptive use for each Water <br />District by source for the study period. Figure 14 shows the overall basin information by <br />year. As shown, consumptive use from ground water tends to be higher in years when <br />consumptive use from surface water is less (i.e. in years of short surface water supply). <br />Note the consumptive use from surface water includes excess surface water stored in the <br />soil moisture and then subsequently used by crops. Ground water, as modeled, does not <br />contribute to soil moisture storage. <br />Table 18 <br />Average Annual Consumptive Use by Source - 1950 through 2002 <br />Water <br />District Consumptive Use <br />from Surface Water Consumptive Use <br />from Ground Water Total CU Surface Water <br />as % of Total <br />20 203,128 230,991 434,119 47% <br />21 30,533 18,413 48,946 62% <br />22 67,495 27,863 95,358 71% <br />24 28,406 10,535 38,941 73% <br />25 20,972 18,466 39,438 53% <br />26 16,359 22,334 38,693 42% <br />27 6,070 22,020 28,090 22% <br />35 21,512 13,949 35,461 61% <br />Total 394,475 364,571 759,046 52% <br />Figure 14 <br />Consumptive Use from Surface Water and Ground Water <br />sooooo <br />700000 <br />600000 <br />500000 <br />v 400000 <br />R <br />U 300000 <br />200000 <br />100000 <br />0 <br /> <br /> <br /> . ^ <br /> <br /> ~ ^ <br /> <br /> ~ ~ <br /> ~ ~ <br /> <br />^ ~~ ~ , <br />~ ~ <br />• ~ ~ ~ <br />~ <br /> <br /> i <br /> ~ ~ ~~ ~i <br />,~ • ~ ~ ~ ~ <br />i <br />~ , • ~~ i <br /> <br /> <br />1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 <br />CU from Surface Water ~ ~ CU from Ground Water <br />cureport_6-2004.doc 39 of 48 June, 2004 <br />