• Organization: Department of the Interior
• Updated: 2021-05-28T00:00:00Z

This data set is a compilation of data from two sampling efforts (2010 and 2014), focused on determining the presence and distribution of organic contaminants throughout the United States portion...

• xml
• xml

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1900-01-01T00:00:00.000+00:00

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide...

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• html

• Organization: Department of the Interior
• Updated: 2020-08-19T00:00:00Z

Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a...

• xml
• xml

• Organization: Department of the Interior
• Updated: 2026-01-05T00:00:00Z

Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks, Protected Places, and other federal lands collected as part of...

• xml
• xml

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

National Park Service Unit tract polygons

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• xml

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

National Park Service unit points.

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

National Park Service unit boundaries.

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