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<br />e <br /> <br />e <br /> <br />. <br /> <br />TABLE OF CONTENTS <br /> <br />EXECUTIVE SUMMARY ....................................................................................... 5 <br /> <br />PROJECT INTRODUCTION ...............................................................................10 <br /> <br />STUDY OBJECTIVE ........................................................................................... 11 <br /> <br />BACKGROUND OF THE DRY CREEK FLOOD CONTROL PROJECT ............ 11 <br />History of Colorado Water Conservation Board Involvement.................... 12 <br />TECHNICAL INFORMA TION.............................................................................. 12 <br />Existing Basin Studies .................................................................................. 14 <br />DESCRIPTION OF CONCEPTUALAL TERNATIVES ........................................ 15 <br />Alternative 1 - Diversion to Poudre River via "Will ox Lane Diversion" ....15 <br />Alternative 2 - Large Storage .......................................................................15 <br />Alternative 3 -Combination of Flood Storage and Diversion..................... 16 <br />ALTERNATIVE 3 COMPONENTS & OPTIONS .................................................16 <br />Common Design Elements ...........................................................................17 <br />Douglas Reservoir - Spillway Enhancement Regulating Weir ................ 17 <br />Larimer County Ditch Spillway................................................................... 18 <br />Irrigation Conveyance in Dry Creek - The Pipeline.................................. 18 <br /> <br />East Vine Diversion .....................................................................................19 <br /> <br />Land Acquisition ......................................................................................... 19 <br /> <br />Existing Storage .......................................................................................... 20 <br /> <br />Canal Controls ............................................................................................. 20 <br /> <br />Specific Elements Used to Develop Options............................................... 21 <br />Off-Stream Detention .................................................................................. 21 <br />Main Stem Storage Sites............................................................................. 21 <br />Terminology Pertaining to State Dam Safety Regulations ......................22 <br /> <br />Options ............... ........ ............................................................................ ........ 23 <br /> <br />Option A ....................................................................................................... 23 <br /> <br />Option B .......................................................................................................23 <br /> <br />Option C ....................................................................................................... 24 <br /> <br />Option D ....................................................................................................... 24 <br /> <br />LEAST COST ALTERNATIVE AND ITS PRELIMINARY DESIGN .................... 25 <br />ECONOMIC INFORMA TION............................................................................... 27 <br /> <br />1 <br />