2002. Drainage is a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The line features ...
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2004. This polygon represents drive way of Arlington County, VA 2004.
2010. This polygon layer represents the Paved Driveway located in Arlington County, VA 2010.
2005. This polygon layer represents driveway (paved or not) of the City of Alexandria in VA.
2004. This polygon represents easement area (property subdivision) in Arlington County, VA 2004.
2004. This dataset represents the Economic Development Zones in Washington, DC 2004
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1980. This polygon layer represents the election districts of Loudoun County, VA 1980.
1. This polygon layer represents the boundaries of the election districts of Loudoun county, VA 1990.
7. This polygon layer represents the boundaries of Election Wards in Washington, DC 1990.
7. This polygon layer represents the boundaries of Election Wards in Washington, DC 2002.