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Asc-4 <br />• SEDIMENT YIELD <br /> Tn/Ac/ <br /> Area R K LS CP Dr Yr Acres Tons/Year <br /> Top 20 0.15 .115 0.90 0.20 0.06 2.70 0.17 <br /> 2:1 Slope 20 0.15 15 1.20 0.35 18.9 2.98 56.32 <br /> 2nd Level 20 0.15 0.12 0.90 0.25 0.08 4.96 0.40 <br /> Bench 20 0.15 0.27 0.90 0.95 0.69 0.40 0.28 <br /> 2:1 Slope 20 0.15 18 1.20 0.35 22.68 6.62 150.14 <br /> 1st Level 20 0.15 0.13 0.90 0.30 0.11 2.98 0.33 <br /> Bench 20 0.15 0.22 0.90 0.95 0.56 0.85 0.48 <br /> 2:1 Slope 20 0.15 18 1.20 0.50 32.40 4.27 138.35 <br /> Bench 20 0.15 0.27 0.90 0.95 0.69 0.86 0.59 <br /> 2:1 Slope 20 0.15 18 1.20 0.95 61.56 2.07 127.43 <br /> Roads, Misc 20 0.35 1.5 0.90 0.80 7.56 1.15 8.69 <br /> Tons/year 483.18 <br /> Volume of Sediment Delivered is: <br />• Vs = Ys <br />1 (2000 lbs/ton) (1 acre) <br />4 lb <br />f <br />2 <br />62 <br />f <br />4 <br />5 <br /> . . <br />5 ( t) ( <br />t) <br />s/ <br />3, <br />60 <br /> Substit uting Ys into the preceding formula g ives a <br /> sedimen t volume of 0.28 Ac-Ft/Yr. Use Vs = 16,553 <br /> cu.ft; total se diment volume for a 6.7-year period <br /> shall b e 82,764 cu.ft.(1.90 Ac-Ft). <br />• <br />