USDA Forest Service

Forest Inventory and Analysis National Program


Forest Inventory & Analysis
National Office
U.S. Forest Service
1400 Independence Ave., SW
Washington, D.C. 20250-0003

(703) 605-4177

United States Department of Agriculture Forest Service.

Egov.  My Government.  My Terms --  The President's E-government Initiatives.  The United States Government's Official Web Portal.

Other Tools

Click here for the latest user alerts.
User Alert:

June 16, 2015: The ratio estimate option (i.e. the option to choose a denominator) is returning incorrect estimates for any ratio involving net growth, mortality, or removals on timberland. Ratio estimates involving net growth, mortality, or removals on forest land are working correctly. Ratio estimates are intended to be restricted to timberland-to-timberland or forest land-to-forest land observations but the restriction is currently malfunctioning for timberland-to-timberland observations. Users may add the following to the numerator and denominator filter boxes to correct for the problem and obtain correct estimates for timberland-to-timberland ratios: and pcond.cond_status_cd = 1 and pcond.reservcd = 0 and pcond.siteclcd in (1,2,3,4,5,6) and cond.cond_status_cd = 1 and cond.reservcd = 0 and cond.siteclcd in (1,2,3,4,5,6).

We are working on the problem and will update the user alert when it is resolved.


The EVALIDator is unable to produce estimates of growth, removals and mortality for multiple inventories when "Trend analysis" is chosen as the row classification variable and the inventories chosen have different sampling designs (i.e., a mix of periodic and annual inventories). In the event that a user inadvertently runs such a retrieval the EVALIDator will return zeroes for the periodic inventories and the correct numbers for the annual inventories. We are sorry for any inconvenience.

FIADB was updated in June 2014 to include the new updated interpretation of the definition of reserved status. All annual data was reanalyzed in accordance with this interpretation and some previously published values have changed as a result. Change estimates were recomputed to account for any modifications. For more details please consult the FIADB User's Guide (

For more information contact any of the following:

Jim Menlove RMRS ( 801-625-5426

Sharon Stanton PNW ( 503-808-2019

Charles Barnett NRS ( 610-557-4031

Carol Perry SRS ( 865-862-2087

    NWOS Table Maker   TPO Reporting Tool   SOLE   FIA2FVS   COLE  



The National Woodland Owner Survey table maker allows users to create custom tables based on data collected during the years 2002-2006.



The National version of this tool allows users to generate Timber Products Output tables for the entire United States.

The Southern Research Station version allows users to focus more specifically on those states in the southern United States.



The Southern On-Line Estimator, developed and maintained by the National Council for Air and Stream Improvement, Inc. (NCASI), allows users to produce tables, graphs, maps, and reports from the annual FIADB data.



A pre-processor tool, developed and maintained by the USFS Forest Management Service Center, converts FIA database files into Forest Vegetation Simulator (FVS) database files.



The Carbon On-Line Estimator, developed and maintained by the National Council for Air and Stream Improvement, Inc. (NCASI), allows users to examine carbon characteristics of any area within the continental United States.

USDA Forest Service
Last Modified: March 17, 2014

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site. Interior West Region North Central Region Pacific Northwest Region Pacific Northwest Region Southern Region Northeast Region