• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

Estimated provisional streamflow values (Messinger and Burgholzer, 2017) for streamgages in James River Basin and the shifted, expanded ratings that were used to develop them are included in this...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

The U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality, has quantified several measures of rating stability and the frequency and magnitude of changes to...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

Improving the quality of water discharged from agricultural watersheds requires comprehensive and adaptive approaches for planning and implementing conservation practices. These measures will need...

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• pdf

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1992-01-01T00:00:00.000+00:00

In order to determine the current status of and to detect any long-term trends in the environmental quality of U.S. nearshore waters, NOAA initiated the National Status and Trends program in 1984...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1992-01-01T00:00:00.000+00:00

In order to determine the current status of and detect any long-term trends in the environmental quality of U.S. nearshore waters, NOAA initiated the National Status and Trends program in 1984...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2015-04-22T00:00:00.000+00:00

These unprojected (geographic coordinates) 3-Zone Average Annual Salinity Digital Geographies are based on analysis of long-term salinity data for 147 estuaries of the contiguous United States....

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1992-01-01T00:00:00.000+00:00

The National Status and Trends (NS&T) Benthic Surveillance Project Chemistry data file reports the trace concentrations of a suite of chemical contaminants in marine sediment and benthic fish...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1992-01-01T00:00:00.000+00:00

This data set reports information regarding the nominal sampling locations for the National Status and Trends Benthic Surveillance Project sites. One record is presented per site. Each record...

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• Organization: Department of the Interior
• Updated: 2026-01-20T00:00:00Z

National Park Service Unit tract polygons

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• Organization: Department of the Interior
• Updated: 2026-02-05T00:00:00Z

National Park Service unit points.

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• zip

• Organization: Federal Geographic Data Committee
• Updated: 2019-09-30

National Park Service unit boundaries.

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-11-24T00:00:00.000+00:00

This collection contains cruises beginning in 1985 and continuing up to the present, which were received, reviewed, and prepared for archival at the Joint Archive (JA) for Shipboard Acoustic...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-08-11T00:00:00.000+00:00

Oceanographic Station Data, temperature, and other data were collected using CTD and bottle casts from HMAS DERWENT and other platforms in a world-wide distribution from August 3, 1904 to December...

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• +16 more