In 2021, the North Central Texas Council of Governments facilitated the cooperative purchase of 4-band (NIR), 3-inch and 6-inch resolution digital aerial photography (orthos) for all 13,800 square miles of the NCTCOG region plus Jack County.  The contractor for this project was Woolpert. The orthos were collected in January through March 2021 (leaf-off) and are available for purchase via DFWMaps Marketplace according to the following price schedule.

Georeferenced TIFF images are sold in  3,000' x 2,000' tiles, or 0.215 square miles. A shapefile of the tile structure may be downloaded below:

TIFF orthophotography grid

Specifications

The coverage area for 2021 includes Dallas, Fort Worth, and surrounding urban and rural counties totaling 14,343 square miles, of which 604 square miles is 3” resolution.   6” true orthoimagery was produced over the central business districts of Dallas  as well as the I-635/US-75 intersection and the Dallas North Tollway corridor from I-635 to Keller Springs Parkway. 

The flight design achieved a nominal ground-pixel resolution sufficient for developing 3” and  6" pixel orthophotography without oversampling. It was also designed with sufficient forward overlap and strip side laps to ensure total project area coverage.  The final aerial photography meets The American Society of Photogrammetry and Remote Sensing (ASPRS) Class I standard for 1” = 50 and 1"=100' scale mapping. 

3-inch Frame Flight Specifications

6-inch Frame Flight Specifications

6-inch Pushbroom Flight Specifications

More information on the 2021 project can be found in the project level metadata:

3-inch Metadata
6-inch Metadata

For questions regarding the 2021 orthophotography project, send us an email.