Found 260 datasets matching filters. (clear all filters)
-
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: 79 | Catalog Last Checked: May 05, 2026 at 08:51 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: 1.00 | Views last month: 76 | Catalog Last Checked: May 05, 2026 at 08:23 PM -
The California Water Quality Status Report is an annual data-driven snapshot of the Water Board’s water quality and ecosystem data. This third edition of the report is organized around the...
Search relevance: 1.00 | Views last month: 44 | Catalog Last Checked: July 29, 2025 at 02:35 AM -
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: 41 | Catalog Last Checked: May 16, 2026 at 07:36 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: 38 | Catalog Last Checked: May 05, 2026 at 07:55 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: 38 | Catalog Last Checked: May 05, 2026 at 07:56 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: 37 | Catalog Last Checked: May 05, 2026 at 07:56 PM -
This U.S. Geological Survey data release contains datasets that combine past data with future projections of nitrogen sources and nitrogen export to the Chesapeake Bay watershed for the years...
Search relevance: 1.00 | Views last month: 35 | Catalog Last Checked: May 05, 2026 at 08:22 PM -
This high-level metadata data document will be supplemented with detailed regional metadata at a later date. The NHDPlusV2 is an integrated suite of application-ready geospatial data sets that...
Search relevance: 1.00 | Views last month: 24 | Catalog Last Checked: May 06, 2026 at 12:50 AM -
This U.S. Geological Survey data release contains data for Smith and Mason Valleys, California and Nevada, from the 2009 publication: Lopes, T.J.,and Allander, K.K., 2009, Hydrologic Setting and...
Search relevance: 1.00 | Views last month: 22 | Catalog Last Checked: May 05, 2026 at 09:43 PM -
Water chemistry data from 60 sites in a partially mined eastern Kentucky watershed. Sites are spatially located from headwater tributaries to mouth for analysis of cumulative downstream impacts....
Search relevance: 1.00 | Views last month: 21 | Catalog Last Checked: April 21, 2026 at 07:58 PM -
This dataset consists of digitized 1:24,000-scale polylines and polygons representing hydrographic areas for the Walker River basin, California and Nevada.
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: May 05, 2026 at 08:18 PM -
The project provides information that can be used in preliminary land use-based risk assessments for pesticides potentially used in the St. Johns River watershed, and for a broad suite of...
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: May 10, 2026 at 03:26 AM -
This USGS data release represents the data from the following publication: Maurer, D.K., 2011, Geologic framework and hydrogeology of the middle Carson River Basin, Eagle, Dayton, and Churchill...
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: May 05, 2026 at 10:12 PM -
The Ecological Research, Assessment and Prediction's Tidal Creeks: Sentinel Habitat Database was developed to support the National Oceanic and Atmospheric Administrations' (NOAA) Hollings Marine...
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: May 10, 2026 at 03:38 AM -
This data release consists of 1:24,000-scale polylines and polygons representing hydrographic areas for the middle Carson River basin, Nevada.
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: May 05, 2026 at 07:47 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: 17 | Catalog Last Checked: May 05, 2026 at 07:55 PM -
Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage area as the only...
Search relevance: 1.00 | Views last month: 17 | Catalog Last Checked: May 05, 2026 at 10:18 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: 15 | Catalog Last Checked: May 05, 2026 at 07:55 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: 15 | Catalog Last Checked: May 05, 2026 at 07:54 PM
