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<br />NOV-13-B6 WED lO:OIl All VUW 1'1 WLL1N::i <br /> <br />rHh NU, ~IU q~U '0'1 <br />, <br /> <br />r. UO/lq <br /> <br />. . <br /> <br />. <br /> <br />the sy..tem, general. agreement wa.. reached on a prel..iminary <br />(dratt) plan to flush sediment in the reach in early 1997. Key <br />elements ot the plan include: <br /> <br />1. Begin release of flushing flows from Halligan Reservoir <br />approximately around Karch 2l.-30, 1997. <br /> <br />2. Flows will be qradually "rupeci" up over a' 10-20 day <br />period to allow remaining fish ~n the river to acclimate <br />and adjust behaviors to increasing level. of sediment and <br />changes in habitat. Maximum flow rate achieved will be <br />targeted as 140 cfs or the normal historic bank full flow, <br />whichever is less. <br /> <br />. <br /> <br />3. Duration of maximum flow will be 20-30 days depending <br />on vater availability. It is also anticipated the <br />reservoir will spill sometime in early June 1997. <br /> <br />The Nature Conservancy agreed to develop a more detailed <br />plan to present to the technical workqroup at it's next <br />meeting, using hydrologic data for historic Halligan <br />Reservoir operations. This more detailed plan will become <br />the foundation for a final agreed to scenario to flush <br />sediment in 1997. The next meeting was scheduled for 9 <br />a.m., November 20, 1996 at North~Poudre Irrigation offices <br />in Wellington, Colorado. It is hoped that preliminary <br />closure tor a 1997 flushing flow plan will be reached at <br />that meeting. In addition, the technical workgroup will <br />begin discussions on Issue 2-tuture management of sediment <br />accumulation in Halligan Reservoir. All interested parties <br />are velcome to attend the November 10, 1996 meeting. <br /> <br />:3f;&;,:: <br /> <br />Steve Puttmann <br />senior Fisheries Biologist <br />Colorado Division of wildlife <br /> <br />. <br />