U.S. Fish & Wildlife ServiceThe HUC 2 unit watershed boundaries were extracted from the U.S. Geological Survey (USGS) National Hydrology Dataset from the Watershed Boundary Data set. The hosted feature layer is being optimized to draw better at different scales. Please refer to the USGS National Hydrology site for more information: https://www.usgs.gov/core-science-systems/ngp/national-hydrography/about-national-hydrography-products?qt-science_support_page_related_con=0#qt-science_support_page_related_con This data set is for display purposes only and is to be used for the FWS Black Carp working group only.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/5711223e0076434a9459b5d5c211e3a5_0engU.S. Fish and Wildlife Service Open DataPublicBlack Carp Working Group Data: HUC2 Watershed Boundaries [United States]Web servicesUnited StatesLast Modified: 2021-02-22