• Organization: Department of the Interior
• Updated: 2021-03-03T00:00:00Z

These ESRI shape files are of National Park Service tract and boundary data that was created by the Land Resources Division. Tracts are numbered and created by the regional cartographic staff at...

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• Organization: Department of the Interior
• Updated: 2001-01-01T00:00:00Z

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 ...

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• Organization: Department of the Interior
• Updated: 1998-09-10T00:00:00Z

This file contains the water quality data summarized in the 1999 report entitled: Baseline Water Quality Inventory, Greenbelt Park. The data and locations existed in the United States...

• dbf

• Organization: Department of the Interior
• Updated: 1998-11-16T00:00:00Z

This file contains the locations at which water quality data was summarized in the 1999 report entitled: Baseline Water Quality Inventory, Greenbelt Park. The data and locations existed in the...

• dbf

• Organization: Department of the Interior
• Updated: 2009-12-03T00:00:00Z

The Digital Geologic Map of George Washington Memorial Parkway and parks in the National Capital Area, Virginia, Maryland, and the District of Columbia is composed of GIS data layers complete with...

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• Organization: Department of the Interior
• Updated: 2024-01-04T00:00:00Z

This technical report documents the acquisition of source data, and calculation of land cover summary statistics datasets for ten National Park Service National Capital Region park units and three...

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• Organization: Department of the Interior
• Updated: 2020-08-17T00:00:00Z

Analysis of organochlorine pesticides and polychlorinated biphenyls (PCBs) in northern cardinal eggs from six neighborhoods near Washington, DC

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• Organization: Department of the Interior
• Updated: 2024-08-06T00:00:00Z

Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...

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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: 2026-01-20T00:00:00Z

National Park Service unit points.

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