Forest Inventory &
Analysis
National Office
U.S. Forest Service
1400 Independence Ave., SW
Washington, D.C. 20250-0003
(703) 605-4177 |

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Program Features
Timber Products Output Studies
Forest Inventory and Analysis (FIA) conducts Timber Products Output (TPO) studies to estimate industrial and non-industrial uses of roundwood across the United States. Primary wood-using mills are sampled, by state, to estimate roundwood usage. Historically, the TPO study was a periodic 100 percent canvass of all primary mills and is moving to an annual sample design Nationwide.
Our questionnaires are designed to determine location, size and types of mills in a state, and the volume of roundwood received by product, species and geographic origin. We also determine the volume, type and disposition of wood residues generated during primary processing.
FIA conducts logging utilization studies to relate TPO to FIA inventory volume. This is done by visiting a cross-section of logging operations in a state to characterize the sites logged, trees harvested, volume utilized per tree, products taken, and residues left behind.
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TPO Toolkit:
Contacts:
For general and technical questions contact our TPO Lead:
To learn about TPO efforts in your area, contact a regional TPO team member:
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