Forest Inventory and Analysis National Program

Program Features

Timber Products Output Studies

FIA conducts Timber Products Output (TPO) studies to estimate industrial and non-industrial uses of roundwood in a state. To estimate industrial uses of roundwood, all primary wood-using mills in a state are canvassed.

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.

TPO studies report size and composition of primary wood using industries, use of roundwood by product, by species and by geographic location.

FIA conducts logging utilization studies to relate TPO to inventory volume. This is done by visiting a cross-section of logging operations in a state to characterize the sites logged, trees cut, products taken, and residues left behind.


Click here to run the FIA Mapmaker Program on TPO data.