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

Oregon Open Data Portal2024-05-01 更新20

Watershed Boundary Dataset 8-digit HU (Subbasin) Vermont

This file contains Hydrologic Unit (HU) polygon boundaries for Vermont. The data is a seamless National representation of 8-digit HU boundaries from U.S. Geological Survey (USGS) National Hydrography

Vermont Center for Geographic Information2025-05-15 更新10

Subbasins (HU8)

This dataset includes subbasins (8-digit HU) that overlap the 16-county NCTCOG region. This dataset consists of geo-referenced digital data and associated attributes created in accordance with the "FG

ArcGIS Hub2026-01-28 更新00