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<br />• <br /> <br />SEDIMENTATION POND HYDROLOGY AND SEDIMENTOLOGY CALCULATIONS <br />Drainage Area (acres) <br />Maximum Elevation (ft) <br />Minimum Elevation (ft) <br />Drainage Height (ft) <br />Hydraulic Length (ft) <br />Average Slope (Y) <br />Slope Adjustment Factor <br />Sub Area <br />i sU~~d <br />Undisturbed B <br />Undisturbed C <br />Average Curve Number <br />Average Runoff (in) <br />10-year, 24-hour event <br />25-year, 24-hour event <br />100-year, 24-hour event <br />SEDIMENT POND A <br />Acres <br />133 <br />21.1 <br />149.8 <br />Equivalent Area (acres) <br />Equivalent Peak Discharge (cfs/in) <br />Actual Peak Discharge (cfs/in) <br />Peak Discharge (cfs) <br />10-year, 24-hour event <br />25-year. 24-hour event <br />100-year, 24-hour event <br />Runoff Yolume (acre-ft) <br />10-year. 24-hour event <br />25-year. 24-hour event <br />100-year. 24-hour event <br />Sediment Volume (acre-ft) <br />Pond Capacity (acre-ft) <br />324.5 <br />8,480 <br />8,160 <br />320 <br />5,220 <br />6.1 <br />1.15 <br />Curve Number <br />78 <br />87 <br />91 <br />0.91 <br />1.16 <br />1.61 <br />213.6 <br />140 <br />244.6 <br />223 <br />284 <br />394 <br />24.6 <br />31.4 <br />43.5 <br />15.4 <br />40.0 <br />23-19 <br />