2009. This data layer contains polygon features representing the Virginia House of Delegate Districts for Prince William County,VA .
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2005. This polygon represent voting precincts for house representatives in the City of Alexandra, VA.
7. The dataset represents the locations and attributes of Human Services Facilities in Washington, DC 2007.
2005. The dataset contains polygons representing planimetric hydrography centerline in Washington, DC 2006.
1994. The dataset contains polylines representing planimetric hydrography in Washington, DC 2002.
1. This dataset represents the Hydrological areas in the Fairfax county.
2002. This polygon layer layer represents the hydrological features such as lakes and streams within the boundaries of Prince William County,VA.
1997. This layer contains the water features that were visible on the 1997 ortho photography. This contains streams, rivers, lakes, ponds, swamps, paved ...
1. The Polygon feature represents all hydrology features greater than five feet in width.
2005. This line data represents water line running across the GMU campus, Fairfax, VA 2005.