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• <br />The flow available to a groundwater pumping recharge project in <br />Reach 10 equals the flow at the Julesburg gage less Western Canal and <br />Korty Canal diversions, which are the only diversions in Reach 10 <br />upstream of the confluence of the South Platte River. CNPPID <br />diversions were not included in the calculation of available flows in <br />Reach 10. A significant portion of CNPPID's diversions are satisfied <br />by NPPD returns and North Platte River flows. Flows available to <br />recharge calculated in this manner may result in a minor impact on <br />CNPPID's diversions, which may need to be offset, or compensated. <br />Power interference charges would need to be paid to NPPD and <br />CNPPID if their non - irrigation season diversions are affected. <br />The flow available to recharge projects in Reach 13 equals the gaged <br />flow at Lewellen, which is at the downstream end of the reach. <br />Diversions to recharge were also limited to the non - irrigation season <br />from October through April. As discussed earlier for Region 1 <br />recharge projects, diversions to a recharge project in Region 13 are <br />upstream of Lake McConaughy, and therefore, could have a negative <br />impact on inflows into the lake. The Cooperative Agreement requires <br />the impacts on flow characteristics relied on by other Program <br />facilities, such as Lake McConaughy, be avoided or offset, and that <br />any adverse impacts of Program water activities by compensated. As <br />such, any recharge project in Region 13 would be required to mitigate <br />adverse impacts on Lake McConaughy storage operations. Because <br />water generated by recharge projects does not necessarily constitute <br />"new" water in Nebraska, the potential yield of these projects has been <br />estimated both with and without diversion losses in Nebraska. <br />The available flow to the Gothenburg Canal during the non - irrigation <br />season was assumed to be the flow at the North Platte River gage at <br />Brady, which is just upstream of the headgate. The available flow to <br />the Dawson Canal during the non - irrigation season was assumed to be <br />the flow at the North Platte River at Cozad, which is just downstream <br />of the headgate. <br />Diversions to recharge for all scenarios were limited to months of <br />target flow excesses at the critical habitat. Recharge to the Platte River <br />is computed as inflows minus evaporation, which is estimated to be <br />one percent (1 %) of gross diversions or pumping. The average annual <br />groundwater pumping to recharge in the middle of Reaches 10 and 13 <br />is 34,845 ac -ft and 29,130 ac -ft, respectively. The average annual <br />8 -G -42 <br />