The Columbia River
The Columbia River
The Columbia River separates Washington State and Oregon.
That would be the Columbia River. This river separates approximately two thirds of southern Washington from northern Oregon. At a place on the 46th parallel north this river total enters the state of Washington, and this parallel becomes the border line that separates the two states.
The Pacific Ocean, Canada, Idaho, and the Columbia River separates us from Oregon
It is either Washington or Oregon Washington State
Cascades
There are many rivers that create state boundaries in the United States. The river that separates Washington from Oregon is the Columbia River.
The answer is Oregon. Washington state is just north of the state of Oregon.
Oregon.
washington and oregon were not states yet.
Washington and Oregon border the Columbia River.