Washington DC/DC From Above

The DC GIS program, coordinated by the Office of the Technology Officer (OCTO), works to improve the quality and lower the cost of services provided by the DC government, through the District's collective investment and effective application of geospatial data and systems. The District of Columbia has a long history of collecting Orthophoto as well as LiDAR data.

Imagery

DC from Above is a collection of orthophotography and aerial views of DC's landscape. The aerial imagery acquisition was flown to support the creation of 4-band digital orthophotography with a 3 inch/0.08 meter pixel resolution over the full project area covering the District of Columbia which is approximately 69 square miles. The contractor received waivers to fly in the Flight Restricted Zone (FRZ) and P-56 areas. The ortho imagery was submitted to the District's Chief Technology Office (OCTO) in GeoTiff/TFW format tiles following the tile scheme provided by OCTO. MrSID and JPEG2000 compressed mosaics were delivered as well using a 50:1 compression ratio. OpenDC has made the orthophoto available as a web service.

License

The orthophoto dataset on OpenDC is licensed under CC BY 4.0. It is almost compatible with ODbL except for few minor differences. A waiver has been obtained from OCTO for the dataset being used by OpenStreetMap.

Usage

If you wish to use this imagery out of iD, please follow the instruction at https://github.com/osmlab/editor-layer-index.