The Seattle Tree Map & Canopy Connections

The Seattle Tree Map is part of Canopy Connections, a project by the Seattle Audubon Society, working to document, map, and enhance Seattle's urban forest habitat for birds and nature.

Urban habitat provides the foundation for sustaining wildlife populations and creating healthy landscapes for people. Canopy Connections seeks to improve urban habitat and form critical connections between people and birds.

Our urban forest is critically important to the health and wellbeing of our entire region, especially to the birds that rely on our urban habitat for food and shelter. By creating and contributing to a dynamic and reliable city tree map to monitor the health, size, and diversity of the urban forest, we will gain a better understanding of Seattle’s urban habitat.

When you contribute to this online tree map of Seattle, you are

  • creating and fostering a culture of urban tree stewardship
  • helping inform others about the importance of our urban forest habitat
  • contributing to the environmental health of the City of Seattle
  • supporting local efforts to better manage and care for Seattle’s trees and wildlife

The City of Seattle has a goal of 30% canopy cover by the year 2036. By accurately tracking the urban forest through this interactive map, we can help ensure the City stays on track for its 30% goal and beyond. Interested in attending a training to learn best practices and techniques for surveying your neighborhood trees? Contact us!


Since 1916, Seattle Audubon has been dedicated to protecting native birds and the habitat that supports them, and few habitats are as overlooked as those found in an urban setting.

Seattle’s fragmented urban forest presents a challenge in connecting green spaces from neighborhood to neighborhood and hosts an ever-changing trial for the thousands of birds that migrate to and from Seattle to breed and raise the next generation of native birds, as well as those species that stop-over to gain respite on the lakes and forests of the city.

Seattle Audubon launched Canopy Connections in an effort to enhance Seattle’s urban forests and preserve habitat for wildlife.


How do I use the Seattle Tree Map?

Search trees
Want to know how many Douglas Firs there are in your neighborhood? Or how about the number of trees with a diameter greater than 36”? Use the search function to find exactly the trees you’re looking for!
Add a tree
The Seattle Tree Map relies on citizen scientists like you to report new additions to the urban forest community. Find a tree’s location on the map (if it doesn’t already exist in the database) and then fill in as much information as you can.
Edit a tree
Notice outdated, incomplete, or inaccurate tree details? Help improve the database by updating a tree, and add an alert if necessary. With your help, we can maintain an accurate and complete online tree inventory.

Where does the tree data come from?

Much of the data comes from the Seattle Department of Transportation (SDOT) Urban Forestry department’s records, but as this map gets updated more and more of the tree data will come from citizen scientists like you.

The City of Seattle has estimated that there are between 1.6 and 3 million trees in Seattle; we started this map with the 130,000 trees documented by SDOT, and can’t wait to see it grow as more are added to it!

Where does the eco impact data come from?

The economic and environmental impact values are calculated by i-Tree software provided by the USDA Forest Service. i-Tree takes into account a tree's species and trunk diameter to determine its yearly dollar value based on the pounds of carbon dioxide absorbed, gallons of water conserved, kilowatt-hours of energy conserved, and pounds of air pollutants reduced.

What is user reputation?

Anyone can sign up to use, update, and edit the Seattle Tree Map. As you contribute to the map by adding and updating trees, you will gain reputation points.

Do’s and Don’ts

Please Do:

  • Attend a training with Seattle Audubon to learn basics of tree mapping & species identification
  • Make use of our urban canopy conservation resources
  • Survey and update the trees on your neighborhood block and beyond
  • Send us feedback on the site and how you use it
  • Organize a community tree survey
  • Become a Tree Ambassador
  • Donate or volunteer to support this project
  • Discover more about the benefits of urban trees
  • Spread the word about the Seattle Tree Map and the importance of our urban forest

Please Don’t:

  • Add inaccurate or blatantly untrue data. All users will be granted access to add and edit trees, but additions and edits found to be grossly inaccurate and intended to degrade the database will be removed.
  • Edit trees with information that is incorrect. To get a reliable idea of our urban forest composition and health, we need the data to be as correct as possible. It is acceptable to add information that is a best guess, but please provide correct information to the best of your abilities.

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