The Columbia River borders most of the length between Washington & Oregon.
The Columbia River forms a major part of the border between the states of Oregon and Washington.
Columbia river
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.
It has a total length of 40 miles
Potomac River
The total length of the river is 3,180 kilometers (1,976 miles) long.
The Columbia River is the major river in Washington.
The Hudson river is 315 miles long
The Orinoco is a major river in South America. Its length is 2,140 kilometers. It is in Columbia and Venezuela.
One fact was david thompson was blind with one eye. Second fact is David thompson was the first european to travel the full length of the columbia river of the columbia river.
Columbia river