Laserfiche WebLink
• Runoff Curve Number and Runoff 07/25/1999 <br />Project: AMENDMENT By: GL Date: 07/25/99 <br />Location: POND 12 Checked: Date: <br />Developed <br />1. Runoff curve number (Cn) <br />Cover description CN Soil Type Area <br />DIST 89 C 23.180 Acres <br />UNDIST 80 C 10.000 Acres <br />CN (weighted): 86 <br />2. Runoff <br />Frequency ..............: 25 yr <br />Rainfall, P (24-hour) ..:2.40 in <br />Runoff, Q ..............:1.18 in <br />Runoff Volume ..........:3.27 Acre-Ft <br />Pond Volume Calculation based on Universal Soil Loss Equation 07/25/1999 <br />Input Data <br />Landuse Area Rainfall Erod- Length Slope Ls Cf Pf <br />(ft^2) <br />--------------- Factor <br />--------- ability <br />-------- (ft) <br />------- (%) <br />-------------------------------- <br />--------------- <br />DIST 1473949.0 --------- <br />24.0 -------- <br />0.30 ------- <br />1995.0 -------------------------------- <br />10.8 6.84 0.50 1.00 <br />Runoff = 1.180 inch. <br />Sediment Density = 112.000 <br />Time = 3.0 years <br />Drainage Ratio = 0.37 <br />Total Area = 33.837 acres <br />Gross Erosion = 833.601 tons/yr. <br />Total Yield = 308.432 tons/yr. <br />Runoff Volume = 3.327 acre-ft <br />Sediment Volume = 0.379 acre-ft <br />Total Volume = 3.707 acre-ft <br />• <br />taEVZSen 12/99) Attachment 2.05.3(3) -10-79 <br />