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.

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Net Volume of Softwood Growing Stock Trees on Timberland, 2002


This map shows the spatial distribution of the nation’s softwood growing stock trees five inches and larger as the total volume in cubic feet by county timberland area. Fifty seven percent of the volume of growing stock is softwoods. The net volume of U.S. softwoods is 492 billion cubic feet.

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.


Growing Stock is defined as a classification of timber inventory that includes live trees of commercial species meeting specified standards of quality or vigor. Cull trees are excluded. When associated with volume, includes only trees 5.0 inches in diameter at breast height (dbh) (4.5 feet) and larger. Timberland is defined as forest land capable of producing crops of industrial wood (20 cubic feet per acre per year in natural stands) that is not withdrawn from timber utilization by statute or administrative regulation.


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

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