2011-03-31_REVISION - C1981008

• Permit No: C1981008
• IBM Index Class Name: REVISION
• Doc Date: 3/31/2011
• Doc Name: Adequacy Response
• From: Greg Lewicki & Associates, PLLC
• To: DRMS
• Type & Sequence: SL12
• Email Name: MLT
• Email Name: SB1
• Media Type: D
• Archive: No

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Values for topographic factor, LS, for low ratio of rM.to Interfill erosion 1
Horizontal slope length (ft)
Slope 43 6 9 12 15 25 50 75 100 .150 200 250 300 400 600 800 1000

0.2 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
0.5 0.08 0.08 0.08 0.08. 0:06 0.08 0.08 0.08 0.09. 0.09 0.09 0.09 0.09 0.09 0.09 0.09 0,09
1.0 0.12 0.12 0.12 0.12 0.12 0.13 0.13 0.14 0.14 0.15 0.15 0.15 0.15 0.16 .0.16 0.17 0.17
2.0 0.20 0.20 0.20 0.20 020 0.21 0.23 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.33 0.34 0.35
3.0 026 0.26 0.26 026 0.26 029 0.33 0.36 0.38 0.40 0.43 0.44 0.46 0.48 0.52 0.55 0.57
4.0 0.33 0.33 0.33 0.33 0.33 0.36. 0.43 0.46 0.50 0.64 0.68 0.61 0.63 .0.67 0.74 0.78. 0.82
8.0 0.38 0.38 0.38 0.38 0.38 0.44 0.52 0.57 0.62 0.68 0.73 0.78 0.81 0.87 0.97 1.04 1.10
6.0 0.44 0.44 0.44 0.44, 0.44 0.50 0.61 0.68 014 0.83 0.90 0.95 1.00 1.08. 1.21 .1.31 1.40
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0 0.54 0.54 0.54 0.54 0.64 0.79 0.90 0.99 1.12 121 1.32 1.40 1.53 1.74 1.91 2.05
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10.0 .
0.60 0.63 0.65 0.66 0.68 0.81 1.03 1.19 1.31 1.51 1.67 1.80 1.92 2.13 2.45 2.71 2.93
12.0 0.61 0.70 0.75 0.80 0.83 1.01 1.31 1.52 1.69 1.97 2.20 2.39 2.66 2.85 3.32 3.70 4.02
14.0 0.63 0.76 0.85 0.92 0.98 1.20 1.58 1.85 2.08 2.44 2.73 2.99 3.21 3.60 4.23 4.74 5.18
18.0 0.65 0.82 0.94 1.04 1.12 1.38 1.85 2.18 2.46 2.91 3.28 3.60 3.68 4.37 5.17 5.82 6.39
20.0 0.68 '0.93 1.11 1.26 1.39 1.74. 2.37. 2.84 322 3.85 4.38 4.83 5.24 8.95 7.13 8.10 8.94
25.0 0.73 1.05 1.30 1.51 1.70 2.17.... 3.00 3.63 4.16 5.03 5.76 6.39 6.96 7.97 9.65 11.04 1226
30.0 0.77 1.16 1.48 1.75 2:00 217. .3.60 .4.40 6.06 6.18 7.11.. 7.94 8.68 9.99 12.19 14.04 15.66
40.0. 0.85 1.36 1.79 2.17 2.53 3.30 4.73 5.84 6.78 8.37 9.71 10.91 11.99 13.92 17.19. 19.98 22.41
50.0 0.91 1.52 2.08 2.54 3.00 3.95 5.74 7.14 8.33 10.37 12.11 13.65 15.06 17.59 21.88 25.55 28.82
60.0 0.97 .1.67 2.29 2.86 3.41 4.52 6.63 829 9.72 12.16 14.26 16.13 17.64 20.92 26.17 30.68 34.71
'Such as for rangeland and other consolidated 6011 conditions with cover (applicable to thawing soil where both Intenill and rill erosion are significant).