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National Park Service Unit Centroid Points.
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National Park Service Unit tract polygons
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National Park Service unit boundaries.
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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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The Unpublished Digital Geologic-GIS Map of Organ Pipe Cactus National Monument and Vicinity, Arizona is composed of GIS data layers and GIS tables in a 10.1 file geodatabase (orpi_geology.gdb), a...
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These ESRI feature class 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...
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