This dataset represents the boundary the Architect of the Capitol jurisdiction in Washington, DC 2001
The boundary was identified from public records (including the Architect's http://www.aoc.gov/cc/cc_map.htm ) and heads-up digitized using a combination of the 1995/1999 orthophotographs and planimetric roads features.
All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.