'Deepest river' can be a confusing term, since the depth of any river at various times of the year may vary widely.
Washington state's border with Oregon is divided by the Columbia River, by volume the fourth largest river in the United States.
Read more about the Columbia, below.
As well, the very top border of Hells Canyon borders on Washington State, Hells Canyon being the deepest river gorge in North America.
Read more about Hells Canyon, below.
Potomac River
The St Johns River is 310 miles long making it the longest river in the state of Florida.
The Willamette River is the longest river "in" the State of Oregon. The Columbia and Snake are both much longer but are not completely "in" the State of Oregon.
hudson river
Mississippi
Duck River (Tennessee) The Duck River is the longest river located entirely within the U.S. state of Tennessee.
The Colorado River is the longest river in the state of Arizona. The Colorado River flows through the Grand Canyon.
The Hudson river is the longest river....
The Columbia River is the major river in Washington.
Missouri
Its called River.
The Missouri River begins as Brower's Spring in the state of Montana.