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<br />e <br /> <br />e <br /> <br />TABLE OF CONTENTS <br /> <br /> <br /> <br />EXECUTIVE SUMMARy.................................................................................................... 5 <br /> <br />PROJECT IN"TRODUCTION.................................................................................... ..........1 0 <br /> <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 /> <br /> <br />TECHNICAL INFORMATION............................................................ ............. .......... ...... .12 <br /> <br />Existing Basin Studies......................... ............................ .............. .......... ........ ........... .14 <br />DESCRIPTION OF CONCEPTUAL ALTERNATIVES ...................................................15 <br />Alternative 1 - Diversion to Poudre River via "Willox 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 />East Vine Diversion.................... ......................................................... ............ ...........19 <br />Land Acquisition....................................................................................... ............... ...20 <br /> <br /> <br />Existing Storage................................................................................ ......................... .20 <br /> <br /> <br />Canal Controls.... .............................................................. ............. ..... .... ..................... .21 <br /> <br />Specific Elements Used to Develop Options ..............................................................21 <br /> <br /> <br />Off-Stream Detention............................................................................ ............... .......21 <br /> <br />Main Stem Storage Sites.... .............................................................. ............. ............. .22 <br />Terminology Pertain to State Dam Safety Regulations ..............................................23 <br /> <br /> <br />O?tions ................................................:...................................................................... .23 <br /> <br /> <br />Option A..................................................................................................................... .23 <br /> <br /> <br />Option B ................................................................................ ..................................... ..24 <br /> <br /> <br />Option C .................................................................................................................... ..24 <br /> <br /> <br />Option D..... ................................................................................................................ ..25 <br /> <br />SELECTED ALTERNATIVE AND ITS PRELIMIN"ARY DESIGN ................................26 <br /> <br /> <br />ECONOMIC INFORMATION.......................................................................................... .27 <br /> <br />e <br /> <br />Final Feasibility Study for the Dry Creek Basin <br /> <br />I <br />