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APPENDIX A-9 Upper Platte & Beaver Canal Augmentation Plan -Plan ID 0102529 <br />The Upper Platte & Beaver Canal Company (Upper Platte & Beaver Co.) is a mutual ditch <br />company in Morgan County on the south side of the South Platte River in Water District 1 (see <br />Figure 1). The Upper Platte & Beaver Co. Augmentation Plan decree (Case No. W-2698, made <br />absolute in Case No. 87CW242) consists of 93 wells, a 1972 priority direct flow water right to <br />recharge in the ditch and Beaver Creek below the ditch. General decree language allowing the <br />use of "other supplies" permits Upper Platte & Beaver Co. to bypass its direct flow water rights <br />in the South Platte River as direct augmentation supplies. Although bypasses for direct <br />augmentation is currently allowed, the ditch company's engineer advised the Division 1 <br />Engineer indicated this practice will need to be better defined in a Water Court application to <br />amend the augmentation plan. <br />The number of wells associated with the augmentation plan from sources reviewed for this effort <br />is summarized in Table 1. <br />Table 1 <br />Wells Associated with Upper Platte & Beaver Canal Augmentation Plan (Plan ID 0102529) <br />Source Number of Wells <br />W-2698 decree 94 <br />H droBase association (Version 20060816) 88 <br />Tied to acrea e in GIS Irri ated Acrea e Assessment* 88 <br />User interview 93 <br />* Subset of HydroBase association using wells decreed for irrigation with decreed rates greater than 50 gpm and specifically tied <br />to lands in the 2001 Irrigated Acreage Assessment. <br />A number of possible explanations exist for the variation in number of wells listed in the decree <br />versus HydroBase, including: <br />• Some augmentation plan decrees allow wells to be added to the plan without re-adjudicating <br />the plan. <br />• Some wells listed in HydroBase may be recharge wells, augmentation wells, or decreed for <br />other uses. <br />• Some wells may have been replaced and the original wells are still included in HydroBase. <br />A number of possible explanations exist for the variation in number of wells tied to acreage from <br />the list of wells in HydroBase, including: <br />• Wells may be mis-located in the GIS coverage and therefore not assigned to irrigated <br />parcel(s). <br />• Wells are not active. <br />• Wells not decreed or decreed for less than 50 gallons per minute. <br />• Wells are decreed for other uses (e.g., augmentation, recharge, domestic, municipal, <br />commercial, stock water, etc.). <br />• The association of a well to the augmentation plan ID may be incorrect in HydroBase. <br />A-49 ofA-106 <br />