The 2007 Section and Subsection map and associated data issued by the USDA Forest Service Washington Office-Ecosystem Management Coordination staff are our official inventory of ecological units at the subregional scale and refine our inventory at the regional scale.
The Foreign Agricultural Service serves as the repository and manager of the USDA Satellite Imagery Archive. The USDA Imagery Archive is the repository for all acquired USDA satellite imagery. The Archive was established in 2001 as a cost-sharing agreement among the various subscribers.