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<br />1 ~ ,--, <br />;; ;;;j <br /> <br />. <br /> <br />Water Requirements and Historic Deliveries <br /> <br />Presented in table 19 is a summary of the historic water <br />utilization study for all ditches in the Lower South Platte Water <br />Conservancy District for the period 1947-1961. This table shows <br />that river diversion shortages on irrigable land in the North <br />Sterling Irrigation District have averaged 94,000 acre-feet of <br />water annually. This represents about 52 percent of the overall <br />annual water diversion shortage in the Lower South Platte Water <br />Conservancy District. The diversion shortages also substantiate <br />the North Sterling Irrigation District's request for the need of <br />additional water. <br /> <br />Historic farm headgate deliveries on presently irrigated <br />irrigable lands in the North Sterling Irrigation District also <br />shown in table 19 have averaged 1.36 acre-feet per acre. Theoreti- <br />cal farm headgate water requirements based on hydrology studies <br />indicate an average need of 2.12 acre-feet per acre on all lands <br />in the District. <br /> <br />. <br /> <br />The 530-acre farm representing all farms in this District, <br />has 292 acres of irrigable land of which 226 acres are presently <br />irrigated. In addition the farm has 28 acres of 6w land which <br />has an historic water supply. Reclamation law prohibits sale of <br />project water to lands classified as class 6w. These lands will, <br />however, continue to receive their historic supply. <br /> <br />The total enhanced water supply for this farm, which is based <br />on 94 percent of the irrigable land being productive, includes a <br />supplemental supply of 0.76 of an acre-foot per acre on presently <br />irrigated irrigable land and a full supply of 2.12 acre-feet per <br />acre on irrigable dryland. Therefore, the total additional farm <br />headgate requirement is 291.20 acre-feet of water. <br /> <br />The ratio of river headgate shortage to farm headgate short- <br />age as shown in table 19 is 1.80 to 1.00. <br /> <br />Crop Distribution and Land Use <br /> <br />Based upon data obtained from farm schedules, lands in the <br />North Sterling Irrigation District have been used chiefly for the <br />production of alfalfa, corn, corn silage, dry beans and sugar <br />beets; with small grains being of minor importance. <br /> <br />Crop distribution and land use found in the North Sterling <br />Irrigation District are presented in table 20. The percentage <br />relationships were considered representative of the study area <br /> <br />. <br /> <br />30 <br />