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HomeMy WebLinkAboutTR 35337 HYDROLOGY REPORT-025 Spyglass Ranch Tract 35337 Hydrology Study Table 12: Basin #3 - Volume Vs. Depth for Water Qualityl Contour Contour Volume Total Total Volume Basin Elevation Area (CF) Volume (Acre-FT) Depth (SF) (CF) (FT) 1587.33 15700 4670 24456 0.5614 2.63 1587.00 12600 4043 19787 0.4542 2.30 1586.66 11900 3828 15744 0.3614 1.96 1586.33 11300 3581 11916 0.2736 1.63 1586.00 10400 3102 8336 0.1914 1.30 1585.66 8400 2393 5234 0.1201 0.96 1585.33 6100 1716 2841 0.0652 0.63 1585.00 4300 1125 1125 0.0258 0.30 1584.70 3200 0 0 0.0000 0.00 Vbmp = 21600 0.4959 Vbmp Water Depth = 2.4 Notes: 1. Volumes shown use the upper and bottom stages of basin. Forebay volume is not included in the computations. Table 13 provides a summary of Basin #3 Depth vs. Outflow, as utilized in the routing analysis. Note that the basin has an outlet structure that is designed to provide storm and water quality mitigation. Table 13: Basin #3 - Depth vs. Outflow WS Stage 1 Stage 2 Stage 3 Cumulative Main Depth Elevation Q (cfs)l Q (cfs)2 Q (cfs)3 Outflow Q Outlet Q (cfs) (cfs)4 6.80 1591.50 0.226 24.49 37.15 61.86 96.87 6.30 1591.00 0.218 22.84 20.22 43.28 93.83 5.80 1590.50 0.209 21.07 7.15 28.43 90.69 5.30 1590.00 0.200 19.13 0.00 19.33 87.44 4.96 1589.66 0.193 17.69 0.00 17.89 85.16 4.63 1589.33 0.186 16.18 0.00 16.36 82.88 4.30 1589.00 0.180 14.50 0.00 14.68 80.54 3.96 1588.66 0.172 12.54 0.00 12.71 78.06 3.63 1588.33 0.165 10.29 0.00 10.46 75.57 3.30 1588.00 0.157 7.38 0.00 7.54 73.00 2.96 1587.66 0.149 1.25 0.00 1.40 70.25 2.63 1587.33 0.141 0.00 0.00 0.14 67.47 2.30 1587.00 0.131 0.00 0.00 0.13 64.58 R: \265324\Final\1lydrology\Report\324 Report Body.docx - 21 -