the Umatilla river
check google earth
The Columbia River until an area between Umatilla, OR and Wallula, WA it then goes east to the Snake River and Idaho.
The Grammart river flows north, and it is in Oregon.
If you are traveling east from the Portland area then Hood River comes first. But if you are travel west from say the Pendleton area the The Dalles would come first.
snake
the Columbia River flows mostly through the stae of Washington
oregon county at the time
its called im a mooron
The Columbia River
The Columbia River separates Washington and Oregon. It runs from British Columbia, Canada, through Washington state, and forms part of the border between Washington and Oregon before emptying into the Pacific Ocean.
the Columbia river is in Washington state and originates in British Columbia and flows through gorges it created to its mouth in the Pacific near Portland, Oregon
Columbia River is north of Oregon. - Lea