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Soil Control <br /> Disturbed Rainfall Erodability Length Slope Practice <br /> Area R K LS CP <br /> 1 40 .70 5.0 1 <br /> lA 40 . 35 4 .25 1 <br /> 2 40 .70 1.7 1 <br /> Annual Sediment Losses <br /> Disturbed A A <br /> Area tons/acre acre-feet/acre* <br /> 1 140. 0 .0918 <br /> 1A 59. 5 .0390 - <br /> 2 47.6 .0312 <br /> *1 ton x 1 x acre 2x 2000 lbs = . 000656 ac-ft <br /> acre 70pcf 43560ft ton crc <br /> Sediment Delivery Ratio* <br /> From AHSDA Fig 5. 24 and 5. 25 the following Sediment <br /> Delivery Ratios were determined. <br /> Estimated <br /> Disturbed Sed. Delivery Sed Delivery <br /> Area Ratio (Theoretical) Delivery Ratio <br /> 1 . 16 . 70 <br /> lA . 50 . 70 <br /> 2 . 20 . 70 , <br /> *This method takes into account the following factors: <br /> surface runoff, texture of eroded mt. , percent ground <br /> cover, slope shape, delivery distance, surface roughness <br /> and slope gradient <br /> Estimated annual yield of sediment delivered to ponds <br /> Disturbed Sed Loss Sed Delivery <br /> Area Area (Ac) (ac ft/ac) Ratio <br /> 1 11. 63 . 0918 .70 <br /> lA 7. 23 .0390 .70 <br /> 2 3. 49 . 0312 . 70 <br /> 61 <br />