2007. This dataset represents the locations of hospitals in Washington D.C. 2007.
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2006. This dataset represents the location of hotels in Washington, DC 2006.
2007. This dataset represents the House District ID Number in Arlington County, VA 2007.
2009. This data layer contains polygon features representing the Virginia House of Delegate Districts for Prince William County,VA .
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.