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0 repeated cycles of 24 hours or more ("hydrocycling"). <br />The Service and CNPPID have agreed on operations which serve to limit potential impacts of <br />hydrocycling on listed species and their habitat. The Agreement (Appendix C, pages 22-28) <br />describes operational procedures during May 1 through August 15 (least tern and piping plover <br />nesting season), and during March 18 through Apri130, and October 17 through November 10 <br />(spring and fall whooping crane migration season, respectively). The operating rules are <br />applicable anytime during these periods when CNPPID operates its hydroplants in an on/off <br />sequence. Flows in the Platte River below the J-2 powerplant tend to increase when the plant is <br />in operation, and decline when the plant is off line. <br />An average daily flow level between 200 cfs and 800 cfs at Overton is expected to occur through <br />late spring with estimated minimum and maximum instantaneous discharges of 100 cfs to 2,000 <br />cfs. <br />Water Year 2008 Projected CNPPID Irrigation Season Operations <br />A shorter than normal irrigation season and reduced delivery rate of irrigation water is again <br />expected in WY08. During the irrigation season, releases will be made for irrigation customers <br />and routed through the Districts' storage and regulating facilities, as much as possible, to <br />generate electricity and to conserve water. Irrigation deliveries are scheduled to take place over <br />an eight-week period, beginning on June 24 and ending on Aug. 19, 2008. Under normal <br />is circumstances, CNPPID delivers 15 to 18 inches per acre over a 12-week season. It will be the <br />fourth consecutive year of below-normal deliveries. CNPPID set allocations of 6.7 inches per <br />acre in 2005, 8.4 inches per acre in 2006, 6.7 inches per acre in 2007, and plans 6.7 inches per <br />acre for the 2008 season. Due to reduced irrigation water available to CNPPID's customers, <br />Elwood Reservoir will not be filled in the spring (Cory, is this correct?). Based on the past three <br />years, however, some natural river flow may again be diverted into the reservoir in the falUwinter <br />to support the reservoir fishery. No water will be pumped into the Elwood Reservoir during the <br />irrigation season except as necessary to comply with the Flow Attenuation Plan, or if needed to <br />deliver irrigation water in September of 2008. <br />If drought conditions persist and similar 2003 to 2006 gains/losses are experienced between <br />Overton, Kearney, and Grand Island, very low to zero flows are again expected to occur at Grand <br />Island during summer and fall. <br />Water Year 2008 Environmental Account Release Priorities <br />Numerous hydrologic and biologic conditions must be considered throughout the year in <br />determining EA releases. The duration and quantity of EA water to be released will depend on <br />historic and existing conditions, Service target flow and pulse flow recommendations, EA <br />volume, release priorities identified in this AOP, and experience. Based on the continuation of <br />"very dr}?" conditions for the 2008 water year, the Districts' drought-conditions operation plan, <br />? and flow conditions experienced during the 2002 to 2007 "very dry" water years, the Service has <br />identified EA release priorities for each seasonal period as described in Table 2(page 16). <br />Water Year 2008 EA AOP 9 October 15, 2007