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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />sites contributes approximately 3,000 af annually. These tributary inflows are not <br /> <br />significant when one compares those inflows to the total average (1955-1984) annual <br /> <br /> <br />runoff of approximately 420,000 acre-feet available to any of the sites. <br /> <br />The water rights listing has been reviewed for the reach between RGl and RG3 and <br /> <br />only one small ditch (less than 1 cubic feet per second (cfs) of decreed amount) <br /> <br /> <br />was found. Therefore, it appears that the three potential reservoir sites have <br /> <br />virtually the same legal water availability. <br /> <br />Since there are no major inflows or water rights on the Rio Grande from Goose Creek <br /> <br />to the South Fork which would significantly influence water availability, it would <br /> <br />make little difference for the water availability study whether RG1, RG2 or RG3 was <br /> <br />selected for the analysis. Since RGl has greater physical flow availability, the <br /> <br />RGl site was selected for the water availability analyses. <br /> <br />1.3.4 South Fork Potential Reservoir Sites <br /> <br />Three potential reservoir sites on the South Fork mainstem upstream of the <br /> <br />confluence with Beaver Creek were visually identified using USGS county maps (scale <br /> <br />of 1:50,000). These three candidates were labeled starting with the most downstream <br /> <br /> <br />site as South Fork 1 (SF1), South Fork 2 (SF2), and South Fork 3 (SF3) and are shown <br /> <br /> <br />on Figure 1-2. To allow comparisons between the SFl and SF2 sites, physical <br /> <br /> <br />parameters were estimated for a 150,000 acre-foot reservoir at the SFl and SF2 <br /> <br /> <br />sites. Since the SF3 site would require an exceptionally high dam to store 150,000 <br /> <br /> <br />af, parameters for the SF3 site were based on a reservoir of approximately 100,000 <br /> <br />acre-feet. These parameters are presented in Table 1-4. <br /> <br />11 <br />