|
|
LS Table
The
values of LS for croplands can be found from the following table. This
table gives LS values for slopes from 0.2% to 60% and slope length from
less than 3 ft. to 1,000 ft.
|
Values
for Topographic Factor, LS, for Moderate Ratio of Rill to Interrill
Erosion 1/
|
|
Horizontal
Slope Length (ft.)
|
|
Slope
(%)
|
<3
|
6
|
9
|
12
|
15
|
25
|
50
|
75
|
100
|
150
|
200
|
250
|
300
|
400
|
600
|
800
|
1,000
|
|
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
|
0.06
|
0.06
|
0.06
|
|
0.5
|
0.07
|
0.07
|
0.07
|
0.07
|
0.07
|
0.08
|
0.08
|
0.08
|
0.09
|
0.09
|
0.09
|
0.09
|
0.09
|
0.10
|
0.10
|
0.10
|
0.10
|
|
1.0
|
0.11
|
0.11
|
0.11
|
0.11
|
0.11
|
0.12
|
0.13
|
0.14
|
0.14
|
0.15
|
0.16
|
0.17
|
0.17
|
0.18
|
0.19
|
0.20
|
0.20
|
|
2.0
|
0.17
|
0.17
|
0.17
|
0.17
|
0.17
|
0.19
|
0.22
|
0.25
|
0.27
|
0.29
|
0.31
|
0.33
|
0.35
|
0.37
|
0.41
|
0.44
|
0.47
|
|
3.0
|
0.22
|
0.22
|
0.22
|
0.22
|
0.22
|
0.25
|
0.32
|
0.36
|
0.39
|
0.44
|
0.48
|
0.52
|
0.55
|
0.60
|
0.68
|
0.75
|
0.80
|
|
4.0
|
0.26
|
0.26
|
0.26
|
0.26
|
0.26
|
0.31
|
0.40
|
0.47
|
0.52
|
0.60
|
0.67
|
0.72
|
0.77
|
0.86
|
0.99
|
1.10
|
1.19
|
|
5.0
|
0.30
|
0.30
|
0.30
|
0.30
|
0.30
|
0.37
|
0.49
|
0.58
|
0.65
|
0.76
|
0.85
|
0.93
|
1.01
|
1.13
|
1.33
|
1.49
|
1.63
|
|
6.0
|
0.34
|
0.34
|
0.34
|
0.34
|
0.34
|
0.43
|
0.58
|
0.69
|
0.78
|
0.93
|
1.05
|
1.16
|
1.25
|
1.42
|
1.69
|
1.91
|
2.11
|
|
8.0
|
0.42
|
0.42
|
0.42
|
0.42
|
0.42
|
0.53
|
0.74
|
0.91
|
1.04
|
1.26
|
1.45
|
1.62
|
1.77
|
2.03
|
2.47
|
2.83
|
3.15
|
|
10.0
|
0.46
|
0.48
|
0.50
|
0.51
|
0.52
|
0.67
|
0.97
|
1.19
|
1.38
|
1.71
|
1.98
|
2.22
|
2.44
|
2.84
|
3.50
|
4.06
|
4.56
|
|
12.0
|
0.47
|
0.53
|
0.58
|
0.61
|
0.64
|
0.84
|
1.23
|
1.53
|
1.79
|
2.23
|
2.61
|
2.95
|
3.26
|
3.81
|
4.75
|
5.56
|
6.28
|
|
14.0
|
0.48
|
0.58
|
0.65
|
0.70
|
0.75
|
1.00
|
1.48
|
1.86
|
2.19
|
2.76
|
3.25
|
3.69
|
4.09
|
4.82
|
6.07
|
7.15
|
8.11
|
|
16.0
|
0.49
|
0.63
|
0.72
|
0.79
|
0.85
|
1.15
|
1.73
|
2.20
|
2.60
|
3.30
|
3.90
|
4.45
|
4.95
|
5.86
|
7.43
|
8.79
|
10.02
|
|
20.0
|
0.52
|
0.71
|
0.85
|
0.96
|
1.06
|
1.45
|
2.22
|
2.85
|
3.40
|
4.36
|
5.21
|
5.97
|
6.68
|
7.97
|
10.23
|
12.20
|
13.99
|
|
25.0
|
0.56
|
0.80
|
1.00
|
1.16
|
1.30
|
1.81
|
2.82
|
3.65
|
4.39
|
5.69
|
6.83
|
7.88
|
8.86
|
10.65
|
13.80
|
16.58
|
19.13
|
|
30.0
|
0.59
|
0.89
|
1.13
|
1.34
|
1.53
|
2.15
|
3.39
|
4.42
|
5.34
|
6.98
|
8.43
|
9.76
|
11.01
|
13.30
|
17.37
|
20.99
|
24.31
|
|
40.0
|
0.65
|
1.05
|
1.38
|
1.68
|
1.95
|
2.77
|
4.45
|
5.87
|
7.14
|
9.43
|
11.47
|
13.37
|
15.14
|
18.43
|
24.32
|
29.60
|
34.48
|
|
50.0
|
0.71
|
1.18
|
1.59
|
1.97
|
2.32
|
3.32
|
5.40
|
7.17
|
8.78
|
11.66
|
14.26
|
16.67
|
18.94
|
23.17
|
30.78
|
37.65
|
44.02
|
|
60.0
|
0.76
|
1.30
|
1.78
|
2.23
|
2.65
|
3.81
|
6.24
|
8.33
|
10.23
|
13.65
|
16.76
|
19.64
|
22.36
|
27.45
|
36.63
|
44.96
|
52.70
|
|
1/
Such as for row-cropped agricultural and other moderately
consolidated soil conditions with little to moderate cover (not
applicable to thawing soil).
|
From Technical
Guide to RUSLE use in Michigan, NRCS-USDA State Office of Michigan.
R
K LS
C P
T
|
