• Organization: Department of the Interior
• Updated: 2011-10-07T00:00:00Z

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: District of Columbia
• Updated: 2025-01-15T00:00:00.000Z

With their longtime presence even before the establishment of a city, African Americans have been central to the culture, heritage and civic life of Washington, DC. This website records nearly 300...

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• Organization: Department of the Interior
• Updated: 2012-06-29T00:00:00Z

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: 2026-02-05T00:00:00Z

National Park Service unit points.

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

National Park Service unit boundaries.

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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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