description Willamette River Overview
The Willamette River is a major tributary of the Columbia River, flowing northward for approximately 300 kilometers through western Oregon. It runs through the state's most populous valley and bisects the city of Portland before joining the Columbia River. The river's basin supports a diverse ecosystem and provides essential water resources for local agriculture and industry. It remains heavily used for recreational boating, fishing, and commercial navigation in its lower reaches.
help Willamette River FAQ
Why does the Willamette River flow north?
The Willamette follows the Willamette Valley's gradual northward slope rather than the direction of the nearest ocean. It joins the Columbia River near Portland after flowing for roughly 300 kilometers.
Can you swim safely in the Willamette River in Portland?
People do swim in designated Portland-area locations, but conditions vary with temperature, currents, algae, and recent sewer overflows. Swimmers should consult current advisories from the Oregon Health Authority and local authorities before entering.
Where does the Willamette River start?
The main stem begins near Eugene at the meeting of the Coast Fork and Middle Fork Willamette rivers. From there it runs north through cities including Corvallis, Albany, Salem, and Portland.
What fish live in the Willamette River?
The basin supports Chinook salmon, steelhead, white sturgeon, and numerous resident fish. Upper Willamette spring Chinook and winter steelhead are federally protected populations affected by dams and habitat loss.
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