Urban Forest Inventory and Analysis (FIA)

The Forest Service's Forest Inventory and Analysis (FIA) program has provided the Nation's forest census since 1930. A system of forest measurement field plots across the United States serves as the program's foundation. Annual forest data collection, analysis, and reporting provide critical information needed to assess the status, trends, and sustainability of the Nation's forests. FIA represents the vast majority of trees nationally, but the program's definition of forest land leaves out most urban areas: FIA defines forest land as forested areas that are undeveloped or "not developed for nonforest land users", are at least an acre in size and 120' in width, and contain a "live plus missing" canopy cover of at least 10 percent. In recognition of the importance of including all forests in the nation's forest census, the Forest Service is establishing a systematic approach for collecting and reporting data on the status and trends of urban trees and forests.

The Urban FIA program fuses the infrastructure of the traditional, rural-focused FIA program with the urban inventory expertise provided by i-Tree. New Urban FIA methods and protocols are used to produce estimates of the quantity, health, composition, and benefits of urban trees and forests. The Urban FIA program complements existing regional and local efforts to provide a cohesive picture of urban forest conditions in the U.S.

The program includes urban versions of two important FIA program components: the National Woodland Owners Survey, which is the official census of U.S. forest owners, and the Timber Product Outputs survey.

Key Resources

Urban FIA Briefing Paper (PDF; 2.3MB) »

Implementation Map showing where Urban FIA is in progress or planned (PDF; 617KB) »

Cities Map showing all proposed cities for Urban FIA data collection and reporting (PDF; 632KB) »

Urban FIA Frequently Asked Questions (PDF; 478KB) »

Urban FIA webinar recording and presentation materials »

For National and Regional Urban FIA Field Guides and other technical information, see our Northern Research Station's Urban FIA web page »

Urban FIA Reports

Austin's Urban Forest, 2014 »

Other Info

What is i-Tree?

link to i-Tree Software Suite

i-Tree is a state-of-the-art, peer-reviewed software suite from the USDA Forest Service that provides urban forestry analysis and benefits assessment tools. The i-Tree Tools help communities of all sizes to strengthen their urban forest management and advocacy efforts by quantifying the structure of community trees and the environmental services that trees provide.

Learn more about i-Tree »

Learn more about the Forest Inventory & Analysis Program »


For general and technical questions contact our Urban FIA lead:
Mark Majewsky
To learn about Urban FIA efforts in your area contact a regional FIA program manager:
William G. Burkman Southern Region
Dennis M. May Northern Region
Gretchen Nicholas Pacific West
Michael J. Wilson Interior West
For all other inquiries contact one of our national research program leads:
Beth Larry National Program Lead, Urban Research
Greg Reams National Program Lead, FIA