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<br />Option 3: Groundwater Irrigation. Farmers would be paid to put in wells and use <br />groundwater as opposed to surface water to irrigate. Reductions in storage water <br />diversions could be stored in the Lake McConaughy EA when storage is available and <br />released as needed for the Program. <br /> <br />Option 4: Conjunctive Use. A conjunctive use project under CNPPID's system would <br />consist of shallow wells that discharge directly into CNPPID's distribution system and a <br />recharge system of wells, pits, or drains located in the same area. Each year, in late fall <br />and winter, flows at the Johnson #2 Power Plant that exceed target flows would be <br />diverted through CNPPID's distribution system for recharge to the local groundwater <br />aquifer. The groundwater aquifer would be recharged to a pre-determined level. Each <br />spring and summer, an equivalent amount of water would be pumped for irrigation. <br />Pumping during the irrigation season would replace irrigation releases from Lake <br />McConaughy. <br /> <br />o On-Site Hydrologic Effects: <br /> <br />The options described above could be implemented to yield a total of 3,000 ac-ftlyr for <br />the Program. Each of these projects has been analyzed independently of each other. <br />Ultimately, only one of these projects or a combination of these projects will be <br />implemented for a total yield of 3,000 ac-ftlyr. <br /> <br />The following table summarizes how anyone of these projects could be implemented in <br />the areas described above to yield 3,000 ac-ftlyr. It was assumed that implementation of <br />anyone of these options will reduce the water supply for the others. However, it is <br />possible that one option or a combination of these options could be implemented to yield <br />a total of 3,000 ac-ftlyr. For active groundwater pumping from high groundwater areas it <br />was assumed that 600 ac-ft would be pumped each month from May through September <br />during periods of target flow shortage, for an annual total of 3,000 ac-ft. For passive <br />lowering of the groundwater table and groundwater irrigation the monthly distribution of <br />reductions in surface water consumptive use was based on the monthly distribution of <br />diversions into the Phelps County Canal. For a conjunctive use project, 3,000 ac-ft will <br />be diverted to recharge in November, and 600 ac-ft would be pumped each month from <br />May through September to replace irrigation storage releases. For options 2 through 4, <br />the yield to the Platte River represents storage increases in the Lake McConaughy EA <br />which can be released to meet target flow shortages. <br /> <br />C:\Dmfi Wnler Action Pllm {Mlly 30, 2(00)\wnpc repon (Version 6 BND2)-.doc <br /> <br />37 <br />