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<br />TASK NO: 11 <br /> <br />Aquatic Resource Studies <br /> <br />SUBTASK NO: 11g <br /> <br />Reservoir Habitat Analysis <br /> <br />PURPOSE: <br /> <br />The purpose of this subtask is to predict reservoir habitat units <br />(RHU) that will be created by construction of proposed reservoirs <br />and determine the appropriate trout stocking densities necessary to <br />develop a fishery. This value was requested as a required study in <br />consultation with the Colorado Division of Wildlife, to aid in <br />developing the management plan for the mainstem and Glade <br />impoundments. <br /> <br />APPROACH: <br /> <br />The construction of reservoirs will change the type of fishing <br />opportunities available to the pUblic and resource agency <br />management strategies for the affected stream reach. The Reservoir <br />Quality Index (RQI) will be used to determine the productivity <br />potential of the proposed mainstem and Glade impoundments. Using <br />estimated maximum reservoir depth and an estimate of total <br />dissolved solids, the RQI predicts the number of RHUs that will be <br />created by construction of new reservoirs. A RHU is defined as the <br />amount of reservoir habitat necessary to maintain one pound of <br />trout standing crop per acre. Total dissolved solids (tds) will be <br />estimated through conservative mass balance of inflow water and its <br />associated tds and reservoir volume. Organic contribution will be <br />obtained from information on nearby existing reservoirs. The <br />calculated RHU value multiplied by the reservoir acreage at the <br />normal high water line will be used to determine the pounds of <br />trout that would need to be stocked to develop a reservoir fishery. <br /> <br />6162a <br /> <br />11-16 <br />