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 Rough and Rotten Cull Trees on Timberland, 2007


This map shows the spatial distribution of the nation’s rough and rotten cull
trees five inches and larger as the total volume in cubic feet by county
timberland area.

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, 2007 RPA data, available at:


USDA Forest Service, Forest Inventory and Analysis.


USDA Forest Service, 2007 RPA data and the National Atlas of the United States.


A Cull Tree is defined as a live tree, 5.0 inches in diameter at breast height (dbh) (4.5 feet) or larger, that is un-merchantable for saw logs now or prospectively because of rot, roughness, or species. 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land capable of producing crops of industrial wood (20 cubic feet per acre per year in natural stands) that is not withdrawn from timber utilization by statute or administrative regulation.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 578 kb PDF

High resolution zipped
files for download:
Map 1375 kb- PDF
Map 2,980 kb - JPG

USDA Forest Service
Last Modified: March 31, 2009

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