Search datasets
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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...
Search relevance: 285.68 | Views last month: 84 | Catalog Last Checked: November 01, 2026 at 08:39 AM -
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...
Search relevance: 201.90 | Views last month: 14 | Catalog Last Checked: October 06, 2026 at 11:15 PM -
This page is meant to act as an archival repository for previous versions of the statewide National Hydrography Dataset (NHD) which includes the Watershed Boundary Dataset (WBD) released by USGS....
Search relevance: 149.11 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:18 PM -
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...
Search relevance: 148.03 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:23 PM -
This USGS data release consists of three datasets representing three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot...
Search relevance: 147.07 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 08:16 PM -
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...
Search relevance: 145.51 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 08:40 PM -
This dataset represents one of three derived outlets or "pour points" for each 12-digit hydrologic unit (HU12) in the Watershed Boundary Dataset (WBD) snapshot delivered with NHDPlus V2.1. The...
Search relevance: 145.51 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 08:01 PM -
This USGS data release includes a shapefile of outlet point locations for selected 12-digit hydrologic units (HU12s) from the Watershed Boundary Dataset (WBD), dated August 13, 2020 (U.S....
Search relevance: 141.45 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 08:52 PM -
This subset of the USGS Water Boundary Dataset contains the polygons of the 50 8-digit Hydrologic Units that comprise the greater Central Valley study site. The Watershed Boundary Dataset is a...
Search relevance: 140.49 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 09:51 PM -
A crosswalk table between NHDPlus version 2.1 flowlines (using the unique field COMID) and the Watershed Boundary Dataset (WBD) 12-digit-hydrologic units (HU-12) is provided for the 48 contiguous...
Search relevance: 137.64 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 09:59 PM -
The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography Dataset (NHD),...
Search relevance: 109.02 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 08:47 PM -
The USGS National Hydrography Dataset (NHD) downloadable data collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally...
Search relevance: 98.95 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 06:11 PM -
** Dataset containing HUC12 watershed boundaries that are within or intersect the boundary of a standard park AOA. ** The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection...
Search relevance: 90.22 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 07:28 PM -
This data release contains fractional intersectional weights used to crosswalk data from the National Water Use Program to the National Integrated Water Availability Assessment (IWAAs) projects....
Search relevance: 83.31 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 08:36 PM -
Lidar Digital Elevation Models (DEMs) at 2-meter resolution have been used to derive watershed boundaries for the State of Maine. Geographic Information Systems (GIS) software was used to...
Search relevance: 80.00 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 10:19 PM -
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 79.66 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 78.80 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 77.70 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
This layer is extracted from The High Resolution National Hydrography Dataset Plus (NHDPlus HR). This is an integrated set of geospatial data layers, including the best available National...
Search relevance: 75.58 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
This layer is extracted from The High Resolution National Hydrography Dataset Plus (NHDPlus HR). This is an integrated set of geospatial data layers, including the best available National...
Search relevance: 75.58 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:50 PM
