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<br />Arkansas River Water Needs Assessment - Section 1. Executive Summary <br /> <br />during the October-March period is preferred over <br />drafting from July-Seprember. Drafting during <br />the July-September period can have negative <br />impacts on fish population productivity, while <br />Ocrober-March drafting avoids these impacts. <br /> <br />Clear Creek Reservoir supports a good quality, <br />diverse fish community because reservoir water <br />levels are fairly stable throughout the growing <br />season and the reservoir topography provides an <br />extensive shallow littoral zone. Stable reservoit <br />levels, good access, scenic quality, and a high <br />q uali ty fishery also make Clear Creek Reservo ir an <br /> <br />attractive location for angling and boating. <br />However, even small variarions in reservoir levels <br />can create significant changes in bank exposure <br />because of the shallow areas near the edges of the <br />teservoir. CDOW recently constructed a boat <br />ramp extension to address this problem. All <br />resources at this teservoir are best supported by a <br />continuation of the current operation pattern, <br />which minimizes water level fluctuations during <br />the growing season. <br /> <br />Table 1-3 provides an overview of water level <br />needs at Twin Lakes and Turquoise Reservoirs. <br /> <br />TABLE 1-3 <br /> <br />Turquoise Reservoir/Twin Lakes <br />Summary of Water level Preferences to Support Resource Values <br /> <br />Month Reference Points: Fisheries Boating Angling Wildlife and Other <br /> 1982-1995 Needs Needs Needs Riparian Needs <br /> Reservoir Operations Needs <br /> (mean surface elevation in feet) <br /> Turquoise Twin <br />November 9,860 9,189 Full as Maintain Aesthetics- <br /> possible level for same as <br /> (send no ice fishing fishing and <br />December 9,855 9,189 more water boating <br /> down river prefer- <br />January 9,851 9,188 than ences <br /> absolutely <br />February 9,845 9,187 necessary) <br />March 9,842 9,186 t Maintain <br />Maintain <br /> water levels; ~ water <br />April 9,837 9,186 don't drop levels; <br /> levels-filling filling is <br />May 9,842 9,186 is ok ok <br /> , High as ~ <br />June 9,864 9,193 possible Full reservoir <br />Don't drop minimal by June <br /> res. eiev. by fluctuation Don't Very ~mited <br />July 9,867 9,193 a total of drop res. <br /> more than elev. by a drawdown is <br />August 9,867 9,190 10 feet total of permissible, <br /> , more than but maintaining <br />September 9,867 9,190 10 feet full reservoir <br />Full as through August <br />October 9,863 9,188 Po,ble iso~imal <br /> <br />Top of Conservation Pool: <br />Turquoise Reservoir - 9,869.4 feet <br />Twin Lakes - 9.200.0 feet <br /> <br />1-18 - Water Needed to Protect or Promote Critical Resource Values <br />