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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: 84 | Catalog Last Checked: November 01, 2026 at 08:39 AM -
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically...
Search relevance: 1.00 | Views last month: 71 | Catalog Last Checked: August 03, 2026 at 09:47 AM -
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: 49 | Catalog Last Checked: September 10, 2026 at 09:17 PM -
The Dams dataset is a representation of the National Inventory of Dams (NID), maintained and published by the U.S. Army Corps of Engineers, in cooperation with the Association of State Dam Safety...
Search relevance: 1.00 | Views last month: 48 | Catalog Last Checked: November 05, 2026 at 11:57 PM -
Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, boundaries, and other selected...
Search relevance: 1.00 | Views last month: 39 | Catalog Last Checked: September 10, 2026 at 09:48 PM -
USGS Historical Quadrangle in GeoPDF. The USGS Historical Topographic Map Collection (HTMC) is scanning all scales and all editions of topographic maps published by the U.S. Geological Survey...
Search relevance: 1.00 | Views last month: 34 | Catalog Last Checked: September 10, 2026 at 09:26 PM -
The USGS 3D Hydrography Program (3DHP) ArcGIS REST service (3DHP_all) from The National Map is the first of several data services that will be delivered by the 3D Hydrography Program. The...
Search relevance: 1.00 | Views last month: 23 | Catalog Last Checked: September 10, 2026 at 06:42 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: 19 | Catalog Last Checked: October 29, 2026 at 06:39 AM -
Blue-line stream means that a stream appears as a broken or solid blue line (or a purple line) on a USGS topographic map. Definition from NCDENR Water Resources Frequently Asked Questions...
Search relevance: 1.00 | Views last month: 16 | Catalog Last Checked: November 04, 2026 at 07:57 PM -
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: 1.00 | Views last month: 14 | Catalog Last Checked: October 06, 2026 at 11:15 PM -
This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources Division for use in a Baseline...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: September 10, 2026 at 07:27 PM -
An Ellipsoidally Referenced Survey (ERS) using two Teledyne Reson SeaBat T50-P multibeam echosounders, in dual-head configuration, was conducted by the U.S. Geological Survey (USGS) St. Petersburg...
Search relevance: 1.00 | Views last month: 13 | Catalog Last Checked: September 10, 2026 at 09:16 PM -
Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: September 10, 2026 at 08:41 PM -
The Watershed Condition Classification feature class represents data on Watershed Condition on Forest Service lands in HUC12 (from the Watershed Boundary Dataset) watersheds that contain more than...
Search relevance: 1.00 | Views last month: 12 | Catalog Last Checked: November 04, 2026 at 02:24 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: 1.00 | Views last month: 11 | Catalog Last Checked: October 06, 2026 at 11:15 PM -
The Office of Coast Survey (OCS) has been involved in the development of a NOAA Electronic Navigational Chart (NOAA ENC) suite to support the marine transportation infrastructure and coastal...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 25, 2026 at 09:50 PM -
This data set contains vector lines and polygons representing coastal hydrography used in the creation of the Environmental Sensitivity Index (ESI) for coastal Louisiana. The HYDRO data layer...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 02, 2026 at 05:03 PM -
The USGS 3D Hydrography Program (3DHP) ArcGIS REST service (3DHP_all) from The National Map is the first of several data services that will be delivered by the 3D Hydrography Program. The...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: October 31, 2026 at 12:19 AM -
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: August 29, 2026 at 07:06 AM
