This data set is a complete digital hydrologic unit boundary layer to the Watershed (10-digit) 5th level for the state of Wyoming. The data set was developed by digitizing watershed boundary lines using 1:24,000 Enhanced Digital Raster Graphics (DRG-E) geo-referenced topographic image base maps and 1:100,000-scale draft boundary lines. The National Elevation Dataset (NED) was used to produce the 1:100,000-scale preliminary draft boundaries. This data set was produced by dissolving the 6th level subbasins based on 5th level codes. Only the name field of the 5th level watershed was mainted in the dissolve.
