The District of Columbia requires a comprehensive range of photogrammetric mapping and GIS database updates in order to keep up with the continued redevelopment and growth in the District; It is critical to keep basemap layers current. In the past year OCTO GIS staff, in coordination with KCI Technologies and Photo Science, has worked to update various planimetric layers that better accurately reflect the District’s ground conditions as of 2010. Layers updated and published include:

• Buildings Footprints
• Bridges and Tunnels
• Geodetic Control Points
• Grates
• Obscured Areas
• Railroad Lines
• Road Casings
• Sidewalks
• Swimming Pools
• Stairs
• Wooded Areas

The planimetric project area covers the entire District of Columbia, approximately 69 square miles. Aerial photographs, taken in April 2010, were used to update the planimetric datasets.

Several new layers were developed as well:

• Recreation Courts
• Wheelchair Ramps

To request an updated DC GIS Distributed Data DVD please email us.