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Figure 7 - "C" Factors for Permanent Pasture and Rangeland <br />CANOPY APPRECIABLE BRUSH <br />PERCENT GROUND COVER <br />80.0 90.1 100.0 <br />25% G 0.013 0.008 0.003 <br />30.1 %~Natural"C" Factor o.008 ~I <br />50% G 0.012 0.007 0.003 <br />USING THE UNIVERSAL SOIL LOSS EQUATION <br />A = R*K*LS*C*P <br />A is the soil loss in tons/acre/year <br />R =rainfall factor <br />K =soil erodibility factor - <br />Delson Deep Stoney Loam <br />Harner & Associates Map No. DOF0129 <br />LS =combined length slope factor, Figure 4 <br />Length of slope is 908', Slope is 25% Grade <br />"C" =cropping management <br />factor: <br />"C" -Crop Management -Natural <br />Canopy 30.1 <br />Cover -Grass 14.0% <br />Ground Cover 90.1% <br />P =erosion control practice factor <br />Soil Loss <br />AREA R K LS <br />Natural 30 0.15 18.1 <br />Reclamation 30 0.15 18.1 <br />Natural <br />30.00 <br />0.15 <br />18.10 <br />0.008 <br />1.00 <br />C <br />0.008 <br />0.003 <br />Reclaimed <br />30.00 <br />0.15 <br />18.10 <br />0.003 Manufacturer's <br />published "C" <br />1.00 <br />P A11 -Soil Loss II <br />1.0 <br />1.0 <br />0.65 <br />0.24 <br />It is shown in the above calculation that the reclaimed slope will lose about .24 <br />tons/acre/year of sediment, which is roughly 1/3 of the sediment loss of the adjacent <br />natural section. The adjacent section will lose about 0.65 tons/acre/year, which is an <br />acceptable amount of sediment loss due to erosion. Over time, the reclaimed slope will <br />SAE - 35 5/Ol <br />