The FIADB 6.1 Phase 2 user guide is now available. The Phase 3 user guide has not changed and version 6.0.1 is still valid. These documents describe all variables available in the FIA database. The P2 data represent plot, condition, and tree measurements taken on the standard FIA base grid, which is roughly 1 sample location per 6,000 acres. P3 data are the forest health indicator measurements taken on a subset of the P2 plots, roughly 1 sample location per 90,000 acres.
The FIADB user guide format has been revised. Each chapter is now numbered independently with a revision date on each page. This will make it possible for users to print specific chapters of interest, or in the future, only revised chapters. Please see the chapter titled User Guide Updates for complete information about the new format.
The Forest Inventory and Analysis Database: Database Description and
User Guide Version 6.1 for Phase 2
The Forest Inventory and Analysis Database: Database Description
and User Guide Version 6.0.1 for Phase 3
The Forest Inventory and Analysis Database: Database Description and User Guide for Urban Data Version 1.0
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