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Parks & Recreation

Healthy Parks, Healthy Portland

phone: 503-823-7529

1120 SW Fifth Avenue, Portland, OR 97204

Park Tree Inventory



Why Inventory Park Trees?

Portland’s parks are an important public resource for residents, comprising almost 200 developed parks, 7,900 acres of natural areas, and an estimated 1.2 million trees. Park trees together with street trees make up the population of trees most accessible to Portlanders, available for all residents to experience and enjoy.

Trees are a vital component of our parks. Conducting an inventory of park trees aids in proactive management that optimizes their health and extends their lives while reducing risks to the public. Information collected as part of this inventory will tell us where trees will need to be replaced in the near future, locate space for new planting projects, and which species are most suited to our parks and their many users. 

For some background on Portland's parks, read this detailed report documenting their early history in the Open Space & Park Development 1851–1965 report. 

What’s new this year?

If you are an experienced street tree inventory volunteer, you are already well practiced in tree identification and measurement of tree diameter. The Parks Tree Inventory will provide new skills for you to develop: data will be collected and mapped on a mobile device, and additional measurements will include tree height and and canopy spread measured using clinometers or electronic range finders.

How does it work?

Volunteers participate as either Neighborhood Organizers,Team Leaders, Data Collectors, or Arborists-on-Call. More details on volunteer roles are available here.

Training and Workday Schedule and Registration

See the full workday schedule and register for events here.

Parks Tree Inventory Application

See here for details on the application process, and how to have your park inventoried in 2018.