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• <br />• <br />• <br />factor of 300 days. Water could also potentially be diverted into the <br />Gothenburg and Dawson Canals, in Reaches 16, and 17, respectively, <br />and canal losses lagged back to the river. Based on the MBSA maps <br />the Gothenburg and Dawson Canals and associated laterals are <br />generally located at an SDF factor of 3250 days. <br />Yield <br />An analysis of the amount of water available for diversion was <br />completed for Reaches 10, 13, 16, and 17. To simplify the analysis it <br />was assumed that diversions to recharge can only occur outside of the <br />irrigation season. Wells located next to the river can pump throughout <br />the non - irrigation season, however, diversions to canals in Reach 13 <br />occur in the fall after the irrigation season until freezing conditions <br />occur, and during spring runoff. Diversions to the Gothenburg and <br />Dawson Canals should be possible throughout the non - irrigation <br />season because there is enough hydraulic head in the respective canals <br />to produce flow velocities high enough to prevent freezing. Similar to <br />potential recharge projects in Region 2, monthly groundwater pumping <br />and diversions to canals in Reach 13 were limited to 10,000 ac -ft due <br />to potential limitations on available recharge sites including land <br />availability and favorable hydrogeologic conditions. <br />Monthly diversions to the Gothenburg and Dawson Canals are limited <br />based on the amount of water that can seep from the canal without <br />generating a significant amount of tailwater. Information was provided <br />by the Nebraska Public Power District (NPPD) regarding the <br />maximum rates that can be diverted when no one is taking water for <br />irrigation and the spillways back to the river are running at maximum <br />capacity. Based on this information, monthly diversions to the <br />Gothenburg and Dawson Canals were limited to 200 cfs and 150 cfs, <br />respectively. The ditch loss is about 20 percent according to <br />information provided by NPPD, therefore, the maximum ditch loss <br />that would be lagged back to the river is 40 cfs and 30 cfs for the <br />Gothenburg and Dawson Canals, respectively. Monthly diversions to <br />recharge could also potentially be limited by climatic cycles. During <br />wet years, it may not be possible to recharge groundwater when <br />groundwater levels are excessively high. The third party impacts on <br />nearby homeowners and landowners may be too severe to recharge <br />water during wet years. <br />8 -G -41 <br />