Forest Inventory &
U.S. Forest Service
1400 Independence Ave., SW
Washington, D.C. 20250-0003
The Forest Inventory and Analysis
(FIA) Program of the U.S. Forest Service
provides the information needed
to assess America's forests.
The long history of scientifically credible FIA data provides critical status and trend information to resource managers, policy makers, investors, and the public through a system of annual resource inventory that covers both public and private forest lands across the United States.
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.
For more information on the FIA program, please see our About Us page.
June 14, 2021: EVALIDator continues to experience stability issues. The CIO has determined that the server on which EVALIDator is currently running is unstable, causing intermittent unavailability. If you are unable to access EVALIDator, please use DATIM. DATIM provides the same capabilities as EVALIDator, as well as additional features that users will likely find useful.
Aug 6, 2020: We are in the process of updating periodic remeasurement datasets for some states. You can find the list of affected states and their associated evaluation groups along with supporting documentation here.
For more information contact any of the following:
FIA readily provides annual business reports and other organizational documents (e.g., strategic plans, National User Group Notes) to make ourselves more accountable to our partners and customers.
Photo: Covers of various FIA business documents
Data and Tools
The FIA program has been serving data to the public since 1996 through a variety of web tools. The Data and Tools page contains links to these tools and data, such as: DATIM, FIA and Urban Data Marts, Spatial Data Services, Engagement Portfolios, National Woodland Owner Survey data, and tool trainings and tutorials.
Photo by US Forest Service, Pacific Northwest
Forest Inventory and Analysis Database (FIADB) User Guides
The Forest Inventory and Analysis Database (FIADB) User Guides series includes multiple documents. These documents provide detailed information for the FIADB.
Photo: Covers of FIA P2 User Manuals
FIA Contributions to National and Global Reporting
The FIA program is the primary official source of authoritative information to national and global assessments, reports, and statistics on the status, conditions and trends of the U.S. forests and the services they provide.
Photo: Image from cover of 2020 RPA
FIA Community Engagement Newsletter
FIA's monthly Community Engagement newsletter provides updates across the regions and to FIA's stakeholders on ways that FIA is engaging the communities we serve. The newsletter also highlights engagements across FIA units nationally to further FIA's mission and ensure national consistency, collaboration and coordination.
Photo: First page of a Community Engagement Newsletter