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<br />C;l <br />~ <br />~ <br /> <br />CJ <br /> <br />7'::J <br />co <br /> <br />18 <br /> <br />have been carry-over moisture from over irrigation or <br /> <br />rainfall during previous months; water withdrawn from <br /> <br />privately owned storage reservoirs; ground water with- <br /> <br />drawn by irrigation wells; runoff from small streams or <br /> <br />seeps that was intercepted by the irrigation ditches; or <br /> <br />a combination of the listed sources. In addition, it <br /> <br />seems likely that the irrigated acreage used in the <br /> <br />computations is too large because of the tendency of <br /> <br />ditch companies to overestimate their acreages by <br /> <br />including in their estimates the acreages of roads, <br /> <br />farmsteads, and small parcels of otherwise uncultiva- <br /> <br />table land. Therefore, the headgate diversion require- <br /> <br />ments shown in table 16 were determined by multiplying <br /> <br />the calculated requirements by the factor 0.89. Annual <br /> <br />requirements during the study period have averaged about <br /> <br />211,000 acre-feet, but they have ranged from 161,000 <br /> <br />acre-feet during 1951 and 1969 to 255,000 acre-feet in <br /> <br />1952. During April the diversion requirements are <br /> <br />smallest, and they average only 7,000 acre-feet; but <br /> <br />during August, when they are the largest, they average <br /> <br />51,000 acre-feet. <br /> <br />To serve as an additional check, total headgate <br />