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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FIA Library

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Field Guides, Methods and Procedures
All download documents are in Acrobat PDF format
Field Guides for Standard (Phase 2) Measurements
Version 8.0 of the FIA field methods guide was released October 2018. It describes the current set of nationally consistent core field procedures used by all FIA units for projects that begin after the date of release. This version of the field guide covers all core and core optional measurements collected on Phase 2 plots (the standard base FIA sample grid, each sample location represents approximately 6,000 acres). Please see the change information in the front of the document for a summary of the changes from version 7.2 to version 8.0.

Phase 2 Measurement Field Guide, Version 8.0 (11.2MB)

Older Versions:

Field Methods for Forest Health (Phase 3) Measurements
These measurements are collected on a 1/16 subset of the standard base FIA grid plots. Chapter numbers follow the numbers established for the Standard, Phase 2 measurement field guide.

Older Versions:

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USDA Forest Service
Last Modified: November 7, 2018

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