MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204
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.
All of Portland’s local watersheds are part of the Columbia River Basin
The slough flows for 18 miles from Fairview Lake to the Willamette River at Kelley Point Park
Fanno Creek begins in southwest Portland and flows to the Tualatin River
The creek crosses several jurisdictions before entering the Willamette River near Milwaukie
Tryon Creek flows through parts of southwest Portland to the Willamette River near Lake Oswego
Portland is shaped by our place along the Willamette River
An area of Portland’s West Hills that drains to the Tualatin River
Protecting natural resources and restoring critical ecosystems
Updates on Environmental Services green infrastructure and watershed work