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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

West Side Big Pipe

constructing the main mining shaft at NW NicolaiEnvironmental Services completed construction on the West Side Big Pipe in 2006. The 14-foot diameter, 3.5-mile tunnel extends from SW Clay Street and SW Naito Parkway north to the Swan Island CSO pump station.

The West Side Big Pipe connects to the Southwest Parallel Interceptor at SW Clay Street. The interceptor extends nearly three miles from Clay to SW Taylors Ferry Road.

Swan Island Pump Station

The Swan Island pump station is 160 feet deep and 124 feet wide. It can pump up to 220 million gallons a day through the Peninsular Force Main and on to the Columbia Boulevard Wastewater Treatment Plant.

A River Renewed

Watch the CSO video A River Renewed narrated by Walter Cronkite.