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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: 1.00 | Views last month: 86 | Catalog Last Checked: August 05, 2026 at 04:52 PM -
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage...
Search relevance: 1.00 | Views last month: 56 | Catalog Last Checked: August 01, 2026 at 04:42 AM -
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: 1.00 | Views last month: 11 | Catalog Last Checked: August 01, 2026 at 04:09 AM -
This dataset contains twelve-digit hydrologic subwatershed units aggregated from the NHDPlus v21+AK Beta State Catchment Fabric. These units express the Catchment Crosswalk logic used to assign...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 03, 2026 at 05:00 AM -
This dataset contains upstream watershed drainage areas for catchments comprising Catchment Fabric HUC12 units. The dataset is incomplete for Alaska.
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 03, 2026 at 05:00 AM -
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-referenced digital data and...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 03, 2026 at 04:39 AM -
This product contains 1,297 watershed boundaries for water quality study sites of the U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Surface Water Trends project. These...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 01, 2026 at 03:53 AM -
This product is a series of ten datasets containing tabular data from historical time series sources for the 9,067 conterminous United States sites in the U.S. Geological Survey (USGS) Geospatial...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 01, 2026 at 04:21 AM -
This dataset is the digital hydrologic unit boundary layer for the 8-digit subwatershed boundaries for the conterminous United States. This dataset is intended to be used with the following two...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 01, 2026 at 03:16 AM -
This product consists of 29 datasets of tabular data and associated metadata for watershed characteristics of 1,530 study sites of the Surface Water Trends (SWT) project of the U.S. Geological...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 01, 2026 at 03:16 AM -
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: 1.00 | Views last month: 0 | Catalog Last Checked: July 31, 2026 at 08:43 PM
