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. distribution is accurate for its members, but~nding the results of that investigation, this application is based upon the assumption that aD percent of the Association members'. irrigation supply is furnished by surface diversion facilities. 4. Applicant has calculated the impact of the pump- ing by its members upon surface water rights of senior appro- priators, as more fully described herein. Since the effect appears to differ from area to area, depending in part upon the location of Applicant's wells, Applicant has divided the Arkansas River Basin into five reaches for purposes of calcu- lating the effect of such pumping. A map showing the five reaches used in these calculations is attached as Exhibit C. 5. On ~he basis of a survey conducted by Applicant with a specifically designed questionnaire, Applicant has calculated the number of acres of the various types of crops irrigated by Applicant's members on a basin-wide basis. This calculation is attached as Exhibit 0-1. 6. Applicant then has calculated the net irrigation requirements, i.e. the amount of irrigation water which such crops must actually receive if a full, healthy crop is to be produced, for each of the crops described in Exhibit 0-1. Exhibit 0-2 describes the consumptive use of each of the crops identified in Exhibit D-l, employing the Modified Blaney- Criddle method, utilizing climatological data described in Exhibit D-2 and tuking into account the effective precipitation. On the basis of this analysis, Exhibit 0-2 states the water requirements per acre. 7. The total number of irrigated acres farmed by the Association members identified in Exhibit A is approximately 47~7~. Exhibit D-3 sets forth the total net irrigation require- ments in acre-feet for the acreage of such AssocIation members .~ . . in each of the five reaches described in Exhibit C. 8. On the basis of the paper described in paragraph 3 hereof, it presently is assumed that groundwater contributes