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<br />Groundwater storage = a x b x c, where <br /> <br />(1) <br /> <br /> <br />000783 <br /> <br />WATER SUPPLY <br /> <br />This section of the methodology report focuses on the supply of <br />dependable, good quality water that is economically available in <br />Kansas and in each river basin of the state for the 56-year <br />planning period from 1984 to 20400 <br /> <br />Groundwater storage <br /> <br />In 1985, the Kansas Water Office and the UoSo Geological Survey <br />(Lawrence District Office) entered into a cooperative agreement <br />entitled "Estimate of Total Groundwater Storageo" Consequently, <br />in 1986, the UoSo Geological Survey completed studies that <br />provided estimates of the amount of economically available, good <br />quality groundwater storage by aquifer, county, river basin and <br />for the state 0 The principal aquifers investigated were the <br />alluvial aquifers in the major river valleys, the aquifers in <br />glacial deposits in northeastern Kansas, the High Plains Aquifer, <br />the Great Plains Aquifer and the Ozark Plateau Aquifero <br /> <br />Good qual i ty water (freshwater) as defined by the Kansas <br />Corporation Commission's Rule 82-3-101 means "water containing <br />not more than 1,000 milligrams of total dissolved solids per <br />1 iter 0" Hence, areas where the total di ssol ved sol ids are <br />greater than 1,000 mg/l were excluded from the calculationso For <br />the aquifers in alluvial and glacial deposits, these areas were <br />determined from water quality data in the UoSo Geological <br />Survey's WATSTORE databaseo The areas in the High Plains Aquifer <br />with total dissolved solids greater than 1,000 mg/l were <br />determined from WATSTORE data and maps by Hathaway and others <br />(1975, 1977, 1978, 1979 and 1981)0 For the Great Plains Aquifer <br />the results of Keene and Bayne (1977) were usedo The work of <br />Jorgensen and others (in press) was used for the Ozark Plateau <br />Aquifer 0 <br /> <br />The equation used to estimate groundwater storage was: <br /> <br />a = volume of deposits saturated by freshwater, <br /> <br />b = specific yield and <br /> <br />c = economic availability. <br /> <br />The methodology for determining the values for each of the terms <br />is given belowo <br /> <br />7 <br />