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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

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

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Explore Portland's Watersheds

The City of Portland sits at the confluence of two of the nation's major river systems, the Columbia and the Willamette. Native salmon, steelhead and other fish and wildlife species live within Portland’s urban boundary, and also migrate through Portland to other parts of the Willamette River Basin, Columbia River Basin, and beyond.

Everyone in Portland also lives in the watershed of a smaller local stream or waterway. Find your watershed on the map below, and explore some of the watershed improvement projects happening in your neighborhood.

Find out about the condition of Portland’s rivers, streams and watersheds in the new Watershed Report Cards.

Columbia River Watershed

All of Portland’s local watersheds are part of the Columbia River Basin

Fanno Creek Watershed

Fanno Creek begins in southwest Portland and flows to the Tualatin River

Johnson Creek

The creek crosses several jurisdictions before entering the Willamette River near Milwaukie

Tryon Creek Watershed

Tryon Creek flows through parts of southwest Portland to the Willamette River near Lake Oswego

Tualatin West Watershed

An area of Portland’s West Hills that drains to the Tualatin River

Watershed Management Plan

Protecting natural resources and restoring critical ecosystems

City Green Blog

Updates on Environmental Services green infrastructure and watershed work