• Organization: District of Columbia
• Updated: 2002-03-01T00:00:00.000Z

This dataset is a complete digital hydrologic unit boundary layer to the subwatershed (12-digit) 6th level at 1:24,000 scale. This data set consists of geo-referenced digital data and associated...

• arcgis geoservices rest api
• ogc wms
• csv
• geojson
• kml
• zip
• +1 more

• Organization: District of Columbia
• Updated: 2024-09-26T16:31:00.000Z

This layer depicts the conglomeration of the 4 layers used for TMDLs. It contains TMDL Subsheds, Direct Drain Overland (not piped), Direct Drain Sewersheds (piped), and Combined Sewer (CSS)...

• arcgis geoservices rest api
• ogc wms
• csv
• geojson
• kml
• zip
• +1 more

• Organization: U.S. Environmental Protection Agency
• Updated: 2020-06-08T00:00:00.000+00:00

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...

• html

• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

This posting contains the source climate data used to run the SWAT model in the Tuckahoe and Greensboro subwatersheds of the Choptank River watershed, Maryland.

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

This posting contains the source crop rotation data used to run the SWAT model in the Tuckahoe and Greensboro subwatersheds of the Choptank River watershed, Maryland. The dataset consists of the...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2020-08-21T00:00:00Z

This metadata record document contains 7 tables used to assess factors influencing long-term water quality changes in the Gwynns Falls, Baltimore, MD, 1998-2016. Included are daily discharge...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2018-05-22

The dataset contains calculated results of annual and seasonal input of nitrogen from seven major sources in the Calapooia River Watershed and its subwatersheds. It also contains annual and...

• html

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2017-03-14T00:00:00.000+00:00

This raster data layer represents sediment plumes originating from stream mouths and coastal pour points. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model for sediment...

• html
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• html

• Organization: U.S. Environmental Protection Agency
• Updated: 2023-11-20

This file contains data associated with the paper "Our national nutrient reduction needs: Applying a conservation prioritization framework to US agricultural lands" by Kirk et al. This analysis...

• html

• Organization: Department of the Interior
• Updated: 2025-05-27T00:00:00Z

This data release contains the analytical results and the evaluated source data files of a geospatial analysis for identifying areas in Alaska that may have potential for sediment-hosted Pb-Zn...

• xml
• xml

• Organization: State of Connecticut
• Updated: 2025-06-13

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...

• html
• html
• html
• html
• html
• html

• Organization: State of Connecticut
• Updated: 2025-06-23

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...

• html
• html

• Organization: State of Connecticut
• Updated: 2025-06-13

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...

• html
• html
• html
• html
• html
• html

• Organization: Department of the Interior
• Updated: 2025-06-12T00:00:00Z

This data release contains the analytical results and evaluated source data files of geospatial analyses for identifying areas in Alaska that may be prospective for different types of lode gold...

• xml
• xml

• Organization: U.S. Environmental Protection Agency
• Updated: 2012-01-01T00:00:00.000+00:00

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...

• html
• html
• html
• html

• Organization: Department of the Interior
• Updated: 2022-08-24T00:00:00Z

Compressed file SedPbZn_Results_gdb.zip contains the analytical results of a geospatial analysis for identifying areas in Alaska that may have potential for sediment-hosted Pb-Zn (lead-zinc)...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2024-03-19T00:00:00Z

The input datasets are daily precipitation and minimum and maximum temperature for a period of 64 years for warming scenarios of 0 degrees to 8 degrees Celsius, by 0.5-degree increments for the...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2022-07-14T00:00:00Z

The data contained in this report was compiled, modified, and analyzed for the Wyoming Landscape Conservation Initiative (WLCI) Integrated Assessment (IA). The WLCI is a long-term science based...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2022-08-28T00:00:00Z

Compressed file sedPbZn_SourceData_gdb.zip contains the GIS datasets and Python scripts used to calculate the estimated potential and certainty that sediment-hosted Pb-Zn (lead-zinc) deposits...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2025-01-03T00:00:00Z

This data release contains a crosswalk between subwatersheds (12-digit hydrologic unit codes; hereafter, HUC12s) and hydrologic regions (sometimes called "Van Metre regions"). This crosswalk...

• xml
• xml