Forest Inventory and Analysis National Program

Proportion of Land that is Timberland, 2002

Description

This map shows the spatial distribution of the nation’s timberland in 2002
as a percentage of county land area. Nationwide, 33 percent (504 million acres)
or two-thirds of all forest land is 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.

Sources:

Distributor:

USDA Forest Service, Forest Inventory and Analysis.

Layers:

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

Definitions:

Timberland is defined as forest land capable of producing in excess of 20 cubic feet per acre per year and not legally withdrawn from timber production, with a minimum area classification of 1 acre.