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

Taking the diameter of a Sitka spruce tree.

Field crew climbing up hill to board the helicopter near Juneau, Alaska.

Determining tree age from a core sample in Ferry County, Washington.

Hiking through the fog to a field plot along<br />
the California coast.

Field crew taking measurements on a group<br />
of fallen trees.

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 traces it's origin back to the McSweeney - McNary Forest Research Act of 1928 (P.L. 70-466). This law initiated the first inventories starting in 1930.

US Forest Facts in English, Spanish, French, Russian,
Chinese and Portuguese

FIA Phase 2 User’s Manual
Version 5.1.2

FIDO

Forest Inventory Data Online

Surf forest inventory data using the FIDO on-line tool!! Create your own forest inventory tables and maps.

2007 RPA Resource Tables

USDA Forest Service
Last Modified: September 14, 2012