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Parks & Recreation

Healthy Parks, Healthy Portland

Parks Tree Inventory



Why Parks Tree Inventory?

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

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

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. 

What’s New?

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

2017 parks have been chosen! See the full workday schedule here.

Parks Tree Inventory Application

See here for details on the application process. While the application period has closed for 2017, check back to for more details on applying to have your park inventoried in 2018.