20240116 15122000 1.0 TRUE Watersheds (HUC12) This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. <br/> <a href='https://edg.epa.gov/metadata/rest/document?id={C78DF01D-0446-4BA0-B504-F9527F3ED4DB}&xsl=metadata_to_html_full' target='_blank'>Metadata</a> U.S. Department of Agriculture, Natural Resources Conservation Service