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The Tree Risk Assessment Manual, Third Edition (2025) is a valuable resource for both the expert and novice risk assessor. As the companion publication for the Tree Risk Assessment Qualification (TRAQ) program, this manual provides a systematic and structured approach to tree risk assessment, including levels of assessment, target and site assessment, tree biology and mechanics, tree inspection, mitigation, and reporting. The combined subjects of this manual guide assessors in estimating the likelihood of a tree or tree part failing as well as the amount of damage that would result from failure.

Download Basic Tree Risk Assessment Form.

**If you plan to take the Tree Risk Assessment Qualification course, please be advised that a downloadable digital copy of the Tree Risk Assessment Manual will be provided as part of the registration, with the option to acquire a print copy at a discounted rate. No discounts or refunds are provided for ISA TRAQ program registration for those who have previously purchased the Manual. For more information contact us at info@siaq.org.

A companion material to the Tree Risk Assessment Manual, the Tree Risk Assessment Clipboard is a handy printed resource will help you remember key concepts while performing tree risk assessments in the field. Newly updated for 2025 (TRAQ 3.0). Recycled plastic with a durable metal clip.