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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

Johnson Creek

Johnson Creek watershed mapJohnson Creek originates in Boring, Oregon, and travels 26 miles west through Clackamas and Multnomah counties, and the cities of Gresham and Portland before reaching its confluence with the Willamette River in Milwaukie. About 170,000 people live within the 52 square mile watershed.

Johnson Creek passes through upland forests, farms, residential communities, wildlife refuges, industrial enclaves, along trails and through golf courses. It is a natural refuge in an urban environment and one of Portland's most important resources.


Watershed contacts

Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server. is NOT affected by this vulnerability as it does not use the OpenSSL software library. Please rest assured we are dedicated to protecting your security on this website.