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These data represent the first ten years of data collection (2007-2016) on avian abundance/density and distribution in the National Capital Region as part of the Inventory and Monitoring Program....
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National Park Service Unit Centroid Points.
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National Park Service Unit tract polygons
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The Digital Geologic-GIS Map of Manassas National Battlefield Park and Vicinity, Virginia, adapted from a U.S. Geological Survey Open-File Report map by Southworth and Denenny (2006), is composed...
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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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The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the...
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Biological Inventories to identify bird species in six National Capital Region Network parks (Antietam National Battlefield, Catoctin Mountain Park, Harpers Ferry National Historical Park,...
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This color infrared imagery covers the area in and around the Manassas National Battlefield Park (MANA). The photographs were taken in 2004 and published in 2006. Orthophotos combine the image...
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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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National Park Service unit boundaries.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: January 27, 2026 at 07:49 PM
