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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

Stephens Creek Outfalls Repair Project

Button to sign up for email udpatesDesign is nearly complete on an Environmental Services project to repair three outfall pipes (see map) that carry stormwater runoff to Stephens Creek. The outfalls are deteriorated and contribute to erosion in Stephens Creek. The project will protect water quality and stream health, reduce erosion and rehabilitate riparian areas. The work will build upon previous projects along Stephens Creek, including habitat improvements at its confluence with the Willamette River.

Link to detailed map of SW Custer and Canby streets project location

Stephens Creek

Stephens Creek flows mainly above ground from its headwaters near Stephens Creek Nature Park to the Willamette River, just north of the Sellwood Bridge. The Stephens Creek subwatershed covers 754 acres of southwest Portland. The creek provides riparian habitat and stormwater conveyance in southwest Portland.

When it rains, stormwater runoff from streets and other hard surfaces flows into the creek. Outfall pipes convey stormwater and street runoff to the stream. This project will improve the function of the three outfalls on the map above.

Next Steps

Project design is nearly complete. Construction is tentatively expected in spring 2018 and will last for several months.

For More Information

With questions or comments, or if you would like more information, please contact Becky Tillson at 503-823-7097 or To receive periodic email updates, please email Becky with "Stephens Outfalls" in the subject line or sign up with the button above.

Thank you for your interest in this important stormwater project.