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. Polygon descriptions are presented for the delineated 190 section ecological units. Brief descriptions of the section map units provide an abstract primarily of the climate, physiography, and geologic substrate that combine to form ecosystems with distinctive vegetation and other unique ecological characteristics.

To view the geospatial coverage metadata click here.

To download the complete study without the Microsoft Word Document Section Descriptions click here.

To download the PDF Section Descriptions (23 Megabytes) click here.