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~~ 25 Overland flow or wash, fluvial transport of soil or organic matter, sills or lines of litter were never obseLVed an the reclamation area. No bxpakwer was observed on the cartair rur-. The high cover values coupled with the contour seeding is an effective erosion control practice. r Limitations of USLE Predictions L]ml.tat1.0715 of the USLE in predict i m soil erosion Est be * ~ ;zed. Specific limitations may include (Warrington et al., 1980): 1) the USLE is empirical. The predicted soil loss is subject to limitations due to the use of empirical coefficients and fitted curves (n~4raphs)• 2) The USLE does not define the probability of soil lass occurring. 3) The use of the USIE is to predict soil loss on an average annual basis. 4) The K factor is as? ~' constant. Surface soils may change particle size distribution by freeze -thaw activity or ongoing erosion. 5) The IS factor has a low level of sensitivity to potential errors in the estimation of slope le~th. Errors in slope gradient, particularly ar steep slopes, can affect significantly estimated A. 6) The rainfall erosion index R ~~~*~ only the erosive force of rainfall and associated runoff. The eg~aticn does not predict soil lass due solely to thaw, snowmelt ar wind. 7) The USIE does not separate runoff and rainfall c®pmients of erosion. soil Erosion Maooira Units Potential sources of ncm-point pollution constitute site specific problems within an individual wa*~*~-+~. To estimate the magnitude of a specific onsite soil loss, the watershed is divided into homoger~:ous a,~ac, or response units. Delineating erosion ~±^^~~ units *+~~,; *+~ identification of homogeneous units of pntn„r;a~ soil erosion and/ar ~;~*+* delivery. The estimated soil lass (t~s/acre/year) for both ,~*+~;~,*~~ arrl reclaimed soils was calculated. The contribution of the variables and factors used in the