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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

Johnson Creek Watershed

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.


link to Johnson Creek watershed report card 

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.