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APPENDIX A-7 Lower Platte & Beaver Canal Augmentation Plan -Plan ID 0102535 <br />The Lower Platte & Beaver Canal Company (Lower 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 Lower Platte & Beaver Co. Augmentation Plan decree (Case No. W-2969) <br />consists of 101 wells, a 1972 priority direct flow water right and 10 recharge facilities, including <br />the ditch itself, within the Lower Platte & Beaver Co. service area. Additional recharge sites and <br />augmentation wells as a direct augmentation supply are included as part of Lower Platte & <br />Beaver Company's pending Water Court application (Case No. 03CW443) to amend its existing <br />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 Lower Platte & Beaver Au mentation Plan Plan ID 0102535 <br />Source Number of Wells <br />W-2969 decree 101 <br />H droBase association (Version 20060816) 105 <br />Tied to acrea e in GIS Irri ated Acrea e Assessment* 95 <br />User interview 101 <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 />System Overview <br />The Lower Platte & Beaver Co. Augmentation Plan is used to divert the 1972 junior direct flow <br />recharge right, in priority, into various recharge sites under the ditch system when water is <br />available in the South Platte River. The ditch company prefers to run recharge water when there <br />is no irrigation water carried through the system because they receive recharge credit for the <br />A-39 ofA-106 <br />