Department of Energy and EnvironmentThe dataset contains locations and attributes of HUC-11 watersheds. The USGS presents a detailed explanation of HUCs at https://water.usgs.gov/GIS/huc.html . HUC-11 boundaries are compiled by each state. The export files of HUC-11 at the state level were provided by each respective state and are unmodified. HUC-11 boundaries for Delaware are not yet available. Also, a small portion of the Chesapeake Basin in NY State has not yet been completed.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/7c1b57f4dae14130a6e4c59f501945e2_33engOpen Data DCPublicChesapeake Bay Watersheds [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of ColumbiaLast Modified: 2024-09-26