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<br />. <br /> <br />003190 <br /> <br />5. . Prepare a description of the spreadsheet model as applied to the study area, <br />which would include the spreadsheet model on a diskette. <br /> <br />Product <br /> <br />The project team will produce the following: <br /> <br />1. A verified and documented spreadsheet model for use in investigating Yampa <br />River basin water availability and project impacts on water resources will be pre- <br />pared. <br /> <br />TASK 4.B-PROJECT ELEMENT <br />WATER AVAILABILITY EVALUATION <br /> <br />Purpose <br /> <br />The purpose of this task is to identify water availability to potential project elements <br />given the identified municipal, industrial, and irrigation water demands. <br /> <br />Approach <br /> <br />The project team will undertake the following activities: <br /> <br />- <br />1. Operate the model prepared in the previous subtask to define the storable flow <br />at up to 10 potential reservoir sites. At this study stage, one project element will <br />be assumed active at any time nOting the water availability at each reservoir site <br />and the impact on instream flows at identified control points. <br /> <br />2. Generate water availability at sites when two project elements are active at the <br />same time. Five sample combinations of potential project elements will be anal- <br />yzed for combined storable flow. The combined storable flow will be compared <br />to the sum of the storable flows if each project element was operated singularly. <br /> <br />3. Present the results of the water availability study to the TSC in a technical <br />memorandum and incorporate their comments into the planning process. <br /> <br />Product <br /> <br />1. Results of the water availability study for individual pOtential reservoir sites for <br />use in yield determinations will be tabulated. Also, information on the effect on <br />water availability of operating more than one project element at one time will <br />be prepared. Observations on changes in the downstream hydrologic regime will <br />be made so the TSC can qualitatively assess the impact of the various individual <br /> <br />15 <br /> <br />DENJ800PI033.51 <br />