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Determination of Watershed Parameters cont. <br />Page 2 <br />K Factor - The soil erodibility factor was determined as an area weighted aver- <br />age. Determination of the K factor for each subarea is shown in <br />Sedimentology Parameters. <br />Lambda - Lambda is the slope length as shown on map TR-486-1. <br />Theta - Theta is the slope angle. <br />LS Factor - The length-slope factor was calculated by: <br />LS = Lambda/72.6)'s((430xZ + 30x + 0.43)/6.613) <br />Barfield, et al., 1981) <br />' where x = sin theta) <br />m = .3 for slopes < 3% <br />m = .4 for slopes 3.1 - 4.9% <br />m = .5 for slopes > 5% <br />C Factor - The control factor was determined as an area weighted average. <br />Determination of the C factor for each subarea is shown in Sedimento- <br />logy Parameters. <br />P Factor - The practice factor was determined as an area weighted average. <br />Determination of the P factor for each subarea is shown in Sedimento- <br />logy Parameters. <br />CP Factor - The CP factor is the product of the C factor and the P factor. <br />CRF/jb 8/86 <br />I <br />Revised 8/86 <br />