Watershed Boundary Dataset 12-digit HUCs of the Regional Integrated Methods for Base Evaluation (RIMBE) of Five Integrated Water Science Study Areas (DRB, IRB, TSJRB, UCOL and WRB)

These data files have information for hydrologic features contained in the Watershed Boundary Dataset (WBD) feature datasets. The datasets include information about the 12-digit HUC polygons for the USGS Regional Integrated Methods for Base Evaluation (RIMBE) of five Integrated Water Science (IWS) study areas: Delaware River Basin (DRB), Illinois River Basin (IRB), Trinity-San Jacinto River Basin (TSJRB), Upper Colorado River Basin (UCOL) and Willamette River Basin (WRB) subwatersheds for 2020 and 2025, along with their respective boundary areas. Users accessing the datasets via the geodatabase or geopackage formats can search for and compare the attributes related to each specific dataset for 2020 and 2025. The data downloads contain 2020 and 2025 versions of the five IWS study areas in geopackage and geodatabase formats with their associated watershed boundaries, incremental HUC's and overall basin polygons for comparison. Over this time period, discrepancies have been identified between the study areas showing different hydrologic attributes, AreaAcres, AreaSqKm, HUC12, names, ToHUC, and other geospatial features further identified in the Process Description of the metadata.