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<br />_ -- -. '"" ------- _. ------- . <br /> <br />Source <br /> <br />Reservoir Location <br /> <br />Dutton <br />Hidden Valley <br />Martinez <br /> <br />Four Mile Creek <br /> <br />San Juan River <br /> <br />Dry Gulch <br />Mill Creek <br />Jackson Creek <br /> <br />Echo Basin <br /> <br />Snowball <br /> <br />Rio Blanco <br />Turkey Creek <br /> <br />Seven sites are identified in Figure 3-1 (which excludes Snowball Reservoir on Turkey Creek). This <br />figure is a reproduction of Figure IV-l from the Harris Water Engineering report. <br /> <br />An initial analysis was conducted at all 8 sites to establish capacities, dam sizes including: height and <br />crest elevations, drainage areas, embankment volume, ratio of fill to yield, and the approximate <br />average runoff. Table 3-1 is a reproduction of Table IV -1 from the Harris report, and summarizes <br />this initial comparison of the dam sites. On the basis of the lowest embankment fill to yield ratios <br />(column 8) and other considerations, three sites were selected for more detailed study. These were: <br /> <br />Hidden Valley <br /> <br />Basis for Selection <br /> <br />Lowest embankment to fill ratio in this <br />basin <br /> <br />Source <br />Four Mile Creek <br /> <br />Reservoir Location <br /> <br />Lowest embankment to fill ratio in this <br />basin <br />Ease of conveying raw water to storage <br />Rio Blanco Echo Basin Only site in basin <br />Note: Snowball Dam on Turkey Creek was considered infeasible due to costs of land <br />acquisition. <br /> <br />San Juan River <br /> <br />Dry Gulch <br /> <br />-' <br /> <br />Operation studies were conducted for each of the above three feasible reservoir sites to ensure that the <br />criteria of supplying an additional 3,300 acre-feet per year was not violated. Additionally, the study <br />analyzed the total cost for the raw water supply and the treated water facilities required to serve the <br />demand centers within the SJWCD. It omitted water treatment costs, but otherwise included costs to <br /> <br />3-4 <br /> <br />S95\PAGOSA FS\S3,TXT <br />IO/27/<r2 mm <br />