Using existing geographic information system (GIS) coverages of soil erodibility (USDA-NRCS State Soil and Geographic Database (STATSGO)), slope, distance to the stream, and land use, a soil erosion potential map will be created using the Revised Universal Soil Loss Equation (RUSLE).  This map will be a ranking of the areas within the Cheyenne River Watershed for the relative potential to contribute surface soils to the stream system.   A large number of sites (48) were sampled using SD DENR Physical Habitat Characterization.  The data from this assessment will be compared to the erosion potential map, correlating areas of high potential erosion to stream physical habitat.  This information will be used to evaluate potential riparian Best Management Practices (BMPs).