The upper Jefferson extends from the confluence of the Big Hole and the Beaverhead rivers approximately 44 miles downstream to the community of Cardwell.
Mississippi River | Thomas Jefferson | River Thames | Amazon River | Columbia River | Hudson River | Colorado River | Potomac River | river | Ohio River | Jefferson Airplane | Jefferson Davis | Missouri River | Delaware River | Murray River | River Tyne | Madeira River | Volga River | River Nene | River Clyde | River Trent | River Severn | Amur River | River Wear | Allegheny River | Jefferson | Red River | Dnieper River | Yarra River | Jefferson County |
The river is a Class I water from the Fishtrap fishing access site downstream from Wisdom to its confluence with the Jefferson River.