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. CWPDA FEASIBIUTY STUDY SECTION - I Executive Summary Colorado Water Protective and Development Association (CWPDA) is a non-profit organization, formed to protect and develop underground and surface waters of the Arkansas River Basin. CWPDA member wells are located in the basin from leadville to John Martin Dam. The majority of CWPDA's memberships are located the counties of Pueblo, Otero, Crowley, Bent, and EI Paso, but the association does have member wells in Fmmont, Chaffee, and lake counties. The 1999 membership had 807 wells of which 789 are included in CWPDA's 1999 Arkansas Rule 14 plan. The primary responsibility of CWPDA is to assist members in complying with the rules that govern groundwater pumping in the Arkansas River Basin. This includes providing well tests, reporting of water pumped, and replacement of out-of-priority depletions. The objectives of this study were: . 1. Development of estimates of future pumping by CWPDA member wells. 2. Development of estimates of future stream depletions attributable to CWPDA member wells. 3. Analysis of potential replacement water sources. 4. Development of rE~placement source alternatives and options for CWPDA. 5. Development of a feasible augmentation plan. 6. Determination of the financial feasibility of the plan. CWPDA's Rule 14 Plans Annually, since June 1996, CWPDA has submitted a Rule 14 plan to the State and Division engineers. The plans have provided for replacement o'f out-of-priority stream depletions using several different sources of consumptive use replacement water. Generally, the replacement water supplies have been: 1. Fryingpan-Arkansas Project first use and return flows. 2. Decreed consumptive use water available from municipal water entities. 3. Decreed consumptive use water owned by private parties or water districts. 4. Agricultural water rights. e With respect to operation of the plans, actual annual pumping has generally been 13,000 to 15,500 acre~feet less than annual water orders. Actual annual stream -depletions have been approximately 3,000 acre.-feet less than the estimated depl1etions. Therefore, the replacement water purchased and leased has exceeded the annual requirement by an average of 3,000 ~cre-feet. The recapture of this excess water or more accurate estimates of well pumping could result in significant economic savings to CWPDA. CWPDA: See I 10/19/99 Page 1 --,