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<br />I <br /> <br />I <br /> <br />Table 1-4 <br />Potential South Fork Reservoir Characteristics <br /> <br />I <br /> <br />I <br /> <br />Dam location (sec,twn,rng)....... <br />Storage capacity (af).... ........ <br />Top of Dam elevation (ft,msl). ... <br />Dam crest length (ft).. .......... <br />Dam height (ft above river). ..... <br />Surface area (acres). .... ........ <br />Reservoir length (miles).. ....... <br />Drainage area (square miles)..... <br />Est. Mean Runoff (1948-1985, af). <br /> <br />I <br /> <br />I <br /> <br />SFl <br /> <br />19,39N,3E <br />150,000 <br />8,735 <br />1,950 <br />320 <br />1,010 <br />4.5 <br />129 <br />87,300 <br /> <br />SF2 <br /> <br />25,39N,2E <br />150,000 <br />8,820 <br />1,510 <br />360 <br />960 <br />3.8 <br />119 <br />80,700 <br /> <br />SF3 <br /> <br />9,38N,2E <br />100,000 <br />9,280 <br />1,350 <br />460 <br />850 <br />3 <br />59 <br />40,700 <br /> <br />I <br /> <br />When considering which of the three South Fork sites to consider in the water <br /> <br /> <br />availability analyses, an investigation was made of significant differences in flow <br /> <br /> <br />or water rights among the sites. <br /> <br />Since the gaged South Fork average annual flow (1955-1984) at South Fork <br /> <br /> <br />approximates 143,000 acre-feet and the reported drainage basin area is 216 square <br /> <br /> <br />miles, the average yield per square mile in the basin is approximately 660 acre- <br /> <br /> <br />feet. If one assumes this number is representative of drainage areas between SFl <br /> <br /> <br />and SF3, the tributary inflow between SFl and SF2 is estimated to approximate 6,600 <br /> <br /> <br />acre-feet on an average annual basis and the tributary inflow between SF2 and SF3 <br /> <br /> <br />to approximate 40,000 acre-feet on an average annual basis. These tributary inflows <br /> <br /> <br />are significant when compared to the flow of the South Fork Basin. <br /> <br />An inspection of the tabulation of South Fork water rights indicates that there <br /> <br /> <br />are no direct flow or storage rights between SFl and SF3. Therefore, it appears <br /> <br /> <br />as though the three potential reservoir sites have virtually the same legal water <br /> <br />availability. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />While the legal water availability at each of the South Fork candidate dam sites <br /> <br /> <br />is expected to be the same, the physical flow availability between the sites differs <br /> <br /> <br />significantly. Considering the physical flow advantage which the SFl site has, the <br /> <br /> <br />SFl site was selected for the water availability analyses. <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />12 <br />