Alaska Statewide Orthomosaic

The Alaska Statewide Digital Mapping Initiative is producing a new statewide orthomosaic, which will provide complete multispectral coverage of the state at 2.5-meter spatial resolution. This satellite image mosaic will be the first consistent, high-resolution, high-accuracy, digital orthoimagery base layer ever produced across the entire state of Alaska.

The orthoimage will be produced to 1:24,000 National Map Accuracy Standards (NMAS) with a CE90 of 12.2-meters. This means that more than 90% of the points will be within 12.2 meters or better of their true location on the Earth. This is an accuracy improvement of at least three times for most existing maps of Alaska. Three statewide mosaics will be delivered: color infrared (CIR), psuedo-natural color, and panchromatic (grayscale). The full land area of Alaska with a 1-kilometer buffer around the coastline and border.

The source data is licensed for use by the US public sector and academia at no additional cost. Others can purchase licenses to use the data at a reduced cost. The orthomosaices are publicly available to all US users via Open Geospatial Consortium web services. Please see the license file EULA for details. Contact us for details.

The statewide orthoimagery contract was awarded to Aero-Metric, Inc. Subcontractor Spot Image is providing the source imagery from their SPOT 5 satellite. Subcontractor Fugro Earthdata is performing the image processing, orthorectification, and mosaicing. As prime contractor, Aero-Metric is responsible for overall project management, provision of control and DEMs, and quality assurance. The specifications for the contract can be found in the RFP document.


Data and Resources

Status: Ongoing
Start Date: 2009/05/01
Type: Data
End Date: 2013/09/30
Data Types: Image
Other Contacts
Name: Anne Johnson
Title: GIS Project Coordinator
Primary Organizations
Alaska Department of Natural Resources

Funding Organization
Alaska Department of Natural Resources

Other Organizations
UAF Geographic Information Network of Alaska


Source Portal
Geographic Information Network of Alaska

Direct Record Link