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loss from an area with specified cover and management to that from an identical area in O <br />tilled continuous fallow. <br />The P factor, the support practice factor, is the raTio of soil loss with a support <br />practice like contouring, strip cropping, or terracing to that with straight-row farming <br />up and down the slope. <br />The C factor was determined based on the vegetation description in Tab 10 and with the aid <br />of the USDA-ARS revised USLE software program for each rover type within the overall <br />drainage area. The P factor is based on current or future practice. Tables 13-3-8 to <br />13-3-10 shows the weighted average results for the C and P factors for the various <br />subwatersheds. <br /> TABLE 13-3-8 <br /> 4eigh[ed CP Factor <br /> Pond 005 - SWS-1 <br />Vegetation TYOe CP Area (ac.) CP x Area <br />aspen 0.001 7.4 0.007 <br />Mixed Brush 0.003 27.6 0.083 <br />Sagebrush 0.003 7.5 0.023 O <br />Topsoil Stockpile 0.05 5.5 0.990 <br />Disturbed/Spoil 0.500 120.7 60.350 <br /> Total 168.7 61.453 <br />Weighted Average CP = 61.453 = 0.365 <br /> 168.7 <br />Based on vegetation type discussed in Tah 10 . <br /> TABLE 13-3-9 <br /> Weighted CP Factor <br /> Pond 005 - SWS-2 <br />Vegetation Tyoe CP Area (ac.) CP x Area <br />Mixed Brush 0.003 15.3 0.046 <br />Sagebrush 0.003 49.7 0.149 <br />Western Wheatgrass 0.006 2.2 0.013 <br />Topsoil Stockpile 0.180 2.5 0.450 <br />Topsoil Removed/Disturbed 0.600 19.8 11.880 <br /> Total 89.5 12.538 <br />Wei gh[ed Average CP = 12.538 = 0.140 O <br /> 89.5 <br />13-3-10 Revised 03/13/92 <br />