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<br /> Wi thdrawal Demands, Mil I ion Acre-Feet <br /> 1965 2000 <br /> Su rface G rou nd Total Surface Ground Total <br /> water water withdrawal water water withdrawal <br />Agriculture 0.3 2.1 2.4 1.6 7.2 8.8 <br />Municipal and <br />Industrial 0.8 0.3 1.1 1.1 0.8 1.9 <br />Instream 3.5 0 3.5 <br />TOTALS 1.1 2.4 3.5 6.2 8.0 14.2 <br /> <br />Mr. Power pointed out withdrawal demands did not make allowances for <br />reusing water. He also indicated the irrigation projection provided for <br />an increase in irrigation acreage from 1,227,000 acres in 1965 to <br />4,750,000 acres in 2000. The irrigation water demand did not allow for <br />changes in management and/or technology or current unit water use. The <br />study was to illustrate the magnitude of increase in irrigation and water <br />demands in relation to avaiiable supply to assess, in a general way, <br />problem areas. He pointed out thet Kansas annually has about 9.9 million <br />acre-feet of runoff originating from the twelve Water Resources Board <br />planning uni ts (Figure I). <br /> <br />Ouring a severe drought, we might expect on.ly about 0.9 mi 11 ion acre- <br />feet of runoff. Based on the existing and possible future development <br />of conservation storage in Kansas reservoirs, Mr. Power said that yield <br />is now about 1 mi 11 ion acre-feet annL'ally and by the turn of the century <br />it might approach 1.5 million acre-feet. Turning to ground water, he <br />indicated 428 mil lion acre-feet are in storage in the state. The annual <br />recharge of the ground-water aquifer is estimated to be about 3.5 <br />mill ion acre-feet annually. Reviewing the various planning units, he <br />felt that by the turn of the century major deficiencies in ground water <br />might be experienced in the Water Resources Board's Upper Arkansas, <br />Cimarron, Smoky Hill, and the Upper Republ ican Planning Units. The most <br />serious deficiency would be in the Upper Arkansas Planning Unit. Areas <br />of surplus surface water could be in the southeast corner of the state. <br />In closing, Mr. Power indicated that the projections are very preliminary <br />but provide a generai idea of the type ur J..J1"oblem encountered. <br /> <br />Dr. M. Jarvin Emerson, Kansas State University, is under a Bureau of <br />Reclamation contract to develop long-range economic projections for <br />Kansas. Economic projections wil I bi translated into water demands by <br />the Water Resources Board within the next six to twelve months. The <br />projections for gross demand v,i 11 se'rve as a basis for planning studies <br />in the Little Arkansas and for joint studies with the Soi I Conservation <br />Service and the Bureau of Reclamation. <br /> <br />2. <br />