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.

All Live Tree Biomass per Acre of Timberland, 2002


This map shows the spatial distribution of all live tree biomass per acre of timberland in tons per acre of timberland by county. On average, by county, there are 38 tons of biomass per acre of timberland.

Use this map only to identify broad spatial trends. At the time of
assessment, data were not available for interior Alaska, the Pacific Basin, Puerto
Rico, U.S. Virgin Islands, and a small number of counties in the lower 48 states.



USDA Forest Service, 2002 RPA data, available at:


USDA Forest Service, Forest Inventory and Analysis.


USDA Forest Service, 2002 RPA data and the National Atlas of the United States.


Biomass is defined as the total aboveground, ovendry weight for live sample trees 1.0 inch diameter or larger, including all tops and limbs (excluding foliage).


Map 577 kb PDF

High resolution zipped
files for download:
Map 1348 kb- PDF
Map 2,825 kb - JPG

USDA Forest Service
Last Modified: October 18, 2007

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.