Phone: 503-823-7740
Fax: 503-823-6995
1120 SW 5th Ave, Suite 613, Portland, OR 97204
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. Explore an interactive map to learn about the health of Portland’s rivers, streams, and watersheds in the Watershed Report Cards.
Columbia River
All of Portland’s local watersheds are part of the Columbia River Basin
Columbia Slough Watershed
The slough flows for 18 miles from Fairview Lake to the Willamette River at Kelley Point Park
Fanno Creek Watershed
Fanno Creek begins in southwest Portland and flows to the Tualatin River
Johnson Creek Watershed
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
Willamette Watershed
Portland is shaped by our place along the Willamette River
Skyline West Area
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