USDA Forest Service

Forest Inventory and Analysis National Program


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

(703) 605-4177

United States Department of Agriculture Forest Service.

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National Woodland Owner Survey

Click here for the latest user alerts.
April 11, 2014

  • FIA, in conjunction with the Forest Service Chief Information Office, will be implementing changes to the FIADB structure and data the third and fourth weeks of April. During that time, FIADB and the online tools will remain available; however, the data will consist of a mix of version 5.1 and 6.0 data. The most visible change is in the interpretation of the definition of reserved status. All annual data have been reanalyzed in accordance with this interpretation and some previously published values have been changed. Change estimates have been 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

    Karen Waddell PNW ( 503-808-2046

    Chuck Barnett NRS ( 610-557-4031

    Carol Perry SRS ( 865-862-2087

  • We expect to correct this problem by late April 2014.
    Thank you for your patience. Please check here for further information and updates.

    March 11, 2014

  • We have discovered an issue in our calculation of sampling error estimates. Currently, sampling error estimates in EVALIDator are only valid when “trend analysis” is selected as the row variable. Population totals and ratio estimates from EVALIDator are valid and are not affected by this error.   Estimates from FIDO are not affected.

  • We expect to correct this problem by late April 2014.  

    Thank you for your patience. Please check here for further information and updates.

  • FIADB 5.1.6 - has been released. You may notice changes in FIADB tables, FIDO, EVALIDator and the DataMart. Some new tables may not contain data until the 2012 field data are processed.

  • The National Woodland Owner Survey (NWOS) is the official census of forest owners in the United States. It is aimed at increasing our understanding of woodland owners who are the critical link between forests and society.

    Picture of National Woodland Owner Survey booklet.

    Summary information from the NWOS is used by people who provide, design, and implement services and policies that affect forest owners including government agencies, non-governmental organizations, including landowner organizations, private service providers, forest industry companies, and academic researchers.

    On an annual basis, the NWOS contacts forest-land owners from across the county to ask them questions about:

    • The forest land they own
    • Their reasons for owning it
    • How they use it
    • If and how they manage it
    • Sources of information about their forests
    • Their concerns and issues related to their forests
    • Their intentions for the future of their forests
    • Their demographics

    The main features of the National Woodland Owner Survey website are:

    • Survey results and publications
    • Frequently asked questions (FAQ)
    • Contact information
    • Copies of the questionnaires used
    • Link to NWOS Survey Tool for online survey entry
    • Links to state forestry and other agencies

    National Woodland Owner Survey Table Maker an on-line tool for generating custom tables.

    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.