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STATUS REPORT <br />Subject: Platte River Water Management Study <br />Prepared For: Governance Comxnittee <br />Platte River Recovery Implementation Program <br />Prepared By: Jeff Bandy / Boyle Engineering <br />Date: August 20, 2007 <br />Study Scope: Assist in determining the timing and quantities of Program water deliveries and additional <br />water supply and conservation projects. The study will evaluate capacity constraints and quantify the <br />volume of Program water necessary to produce pulse and maintenance flows as follows: <br />• 5,000 cfs of Program water for 3 days at Overton for pulse flows when other demands competing <br />for river and other conveyance capacities are low (normally September 1 to May 31) and, when <br />combined with other flows to exceed 6,000 cfs two out of three years. <br />• Yield 800 cfs of Program water (at Overton) during the irrigation season (May 1- September <br />30). <br />Phase I Tasks: <br />Task IA: Research and Investigation <br />• Review Program Document, Water Conservation/Supply Study, Water Action Plan, and FEIS <br />• Conduct Interviews <br />Task IB: Historic Flow Data and Records <br />• Platte River at Overton for and identify Wet, Dry, and Average years <br />• Compare Overton flows (1947-2006) to targets and quantify shortages for Wet, Dry, and Average years <br />Task IC: Quantify Conveyance Loss and Lag Time <br />• Update WMC Loss Model through 2006 for 19 reaches as identified in Conservation/Supply Study <br />• Quantify loss factors to be applied to Program Water introduced to meet shortages at Overton <br />Task II: Determine Available Capacity for Program Water <br />• Develop methodology for spreadsheet model of capacities (& choke points) on river and in systems <br />Task III: Routing Studies <br />• Spreadsheet for shortage reductions and volumes of water required given losses and capacity restrictions. <br />• Evaluate NEA, Pathfinder, and Tamarack I water for Cases I(with diversions of Program water) and II <br />(bypasses of Program water) <br />Task N: Solutions <br />• Evaluate 13 Action Plan projects for Cases I and II <br />• Rank Solutions by cost-effectiveness <br />Task V: Draft Report for the Governance Committee <br />Task VI: Presentation to the Governance Committee <br />Task VII: Final Report <br />Phase II will develop and screen additional solutions with the final scope developed following Phase I. <br />f30WLE