Multnomah Channel

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1937 Map showing Multnomah Channel between Columbia River Highway and Sauvie Island.
1937 Map showing Multnomah Channel between Columbia River Highway and Sauvie Island.

Multnomah Channel is a branch of the Willamette River a few miles upstream of the Willamette's convergence with the Columbia. Multnomah Channel defines the western side of Sauvie Island before it too joins the Columbia near the city of St. Helens, Oregon.

The Multnomah Channel may have once been the main channel of the Willamette, especially before the Willamette was dredged and channelized beginning in the late 1800s.


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