Forest Inventory and Analysis National Program

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Forest Inventory & Analysis
National Office
U.S. Forest Service
1601 North Kent Street,
Suite 400
Arlington, VA 22209

(703) 605-4177

Welcome to our site

We are the Nation's Forest Census

A large picture of FIA employee using clinometer to determine tree height.

Two smaller pictures from the first Forest Survey of the Lake States, 1933-1937; one showing an FIA employee doing photo interpretation and another picture showing three men studying an FIA map. (circa 1933)

The Forest Inventory and Analysis (FIA) Program of the U.S. Forest Service provides the information needed to assess America's forests.

As the Nation's continuous forest census, our program projects how forests are likely to appear 10 to 50 years from now. This enables us to evaluate whether current forest management practices are sustainable in the long run and to assess whether current policies will allow the next generation to enjoy America's forests as we do today.

FIA reports on status and trends in forest area and location; in the species, size, and health of trees; in total tree growth, mortality, and removals by harvest; in wood production and utilization rates by various products; and in forest land ownership.

The Forest Service has significantly enhanced the FIA program by changing from a periodic survey to an annual survey, by increasing our capacity to analyze and publish data, and by expanding the scope of our data collection to include soil, under story vegetation, tree crown conditions, coarse woody debris, and lichen community composition on a subsample of our plots.

FIA is managed by the Research and Development organization within the USDA Forest Service in cooperation with State and Private Forestry and National Forest Systems. FIA has been in operation under various names (Forest Survey, Forest Inventory and Analysis) for some 70 years. We cover forests on all forest lands within the US.

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FIA Annual Reports
		Just Released - 2007 Annual Business Report The Annual Business Reports are modeled on a corporate annual business report and are another step in our efforts to make ourselves more accountable to our partners and customers.