information
Portland and the federal government

Learn about our sanctuary city status, efforts to block federal overreach: Portland.gov/Federal

Street Tree Inventory Resources

Information
Tree ID guides and other resources from the Tree Inventory Project

Street Tree Inventory Protocol Manual

Measuring Tree Diameter

Condition

How healthy is the tree? Follow the guidelines set in the Inventory Protocol to determine a trees overall wellbeing.

Site Evaluation

Site Evaluation Cheat Sheet: determining site type and measuring site width.

Tree Identification Resources

Genus Cheat Sheets: 

Characteristic Cheat Sheets:

Naturalized and Unimproved Right-of-Way Sample Survey

In Fall 2024, Urban Forestry conducted a sample survey which estimated an additional 81,000 trees in rights-of-way not inventoried by the Street Tree Inventory project. Read the methods and results here: 

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