The Columbia River.
Washington, Nevada, Idaho and California border Oregon.
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Columbia river
Columbia river
The Columbia river.
Idaho borders Washington and Oregon to the East.
The Columbia River forms a border between the states of Washington and Oregon.
The Columbia River lies between the States of Washington and Oregon, and forms the border between the two.
Oregon, Washington and California border the Pacific Ocean.
Washington and Oregon border the Columbia River.
The Columbia River.
The Columbia River.