July 17, 2006
2005 DC Orthophotography is Available
The Office of the Chief Technology Officer provides aerial photography for the District of Columbia.
In April of 2005, the District flew new aerial photography of DC in order to update base mapping layers
Aerial photography, taken in April of 2005, was used to update the planimetric and topographic data originally produced for the District of Columbia from the 1999 aerial photography. The image is available in DC GIS tools and will be published in both the DC Atlas and DC Guide web applications
The planimetric project area covers the entire District of Columbia which is approximately 69 square miles. The digital imagery was used to create natural color digital orthophotography with 15 cm pixel resolution. The orthophotography consists of 328 ortho tiles captured at a scale of 1 to 2400. The tile dimensions are 800 by 800 meters. A corresponding MrSid image was created by mosaicking the 328 ortho tiles together and compressing the image using an 80 to 1 compression ration.
If you have any comments about the site or experience any difficulties, please email us
The World War II Memorial completed in 2004, is one of the many new features captured in the 2005 Orthophoto.