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<br />• <br />• <br />Table TR 90-06-11 <br />25 Year USLE Calculations <br />Permanent Impoundments <br />Tributary krea (acres) <br />Universal Soil Loss Equation Parameters <br />Rainfall Factor (R) <br />Soil Erodibility Factor (K) <br />Topographic Factor (LS) <br />Cover & Crop Dlanagement factor (C) <br />Erosion Control Practice Factor (P) <br />Soil Loss (tons/acre/year)=(R)(K)(LS)(C)(P) <br />Sediment Delivery Ratio <br />Sediment Yield (tons/acre/year) <br />25 Year Sediment Yield (acre-feet @80.31bs/ft3) <br />Design Pond Capacity (acre-feet) <br />Capacity below outlet culvert <br />Storaee Volum? (acre-feet) <br />a) Taken from previously approved pond designs <br />TR 90-06 <br />Exhibit 3 - 34 <br />P01DS <br />M3-N t13-S <br />113.7a 188.62a <br />30a 30a <br />0.32a 0.32a <br />5.10a 13.75a <br />O.1Q O.lOa <br />1.0 1.0 <br />4.9 <br />a 13.2 <br />a <br />0.42 0.42 <br />2.06 5.54 <br />3.35 14.94 <br />8.36a 38.2a <br />3.43° 31,ea <br />0:08 16.46 <br />Revised 11/16/90 <br />