U.S. Fish & Wildlife ServiceFOR non-AGOL ACCOUNT HOLDERS, DOWNLOAD THIS GEOSPATIAL DATA HERE: https://gis-fws.opendata.arcgis.com/search?tags=lmvjv Boundary of Atchafalaya Basin watershed in SE Louisiana. Derived from the Watershed Boundary Dataset (WBD). The WBD is a seamless, national hydrologic unit dataset. Hydrologic units represent the area of the landscape that drains to a portion of the stream network. More specifically, a hydrologic unit defines the areal extent of surface water drainage to an outlet point on a dendritic stream network or to multiple outlet points where the stream network is not dendritic. A hydrologic unit may represent all or only part of the total drainage area to an outlet point so that multiple hydrologic units may be required to define the entire drainage area at a given outlet. Hydrologic unit boundaries in the WBD are determined based on topographic, hydrologic, and other relevant landscape characteristics without regard for administrative, political, or jurisdictional boundaries. The WBD seamlessly represents hydrologic units at six required and two optional hierarchical levels.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/844787f54830413cb26ded3773535e74_0engU.S. Fish and Wildlife Service Open DataPublicAtchafalaya Basin Watershed [United States]Web servicesUnited StatesLast Modified: 2024-09-25