Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National representation of HU boundaries fr
This dataset was generated as part of a project that quantifies how natural lakes (NLs) and reservoirs (RSVRs) across the conterminous U.S. (CONUS) with different levels of hydrologic connectivity res
The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent
