The Missouri River flows through the state of Montana in the Rocky Mountain region.
North Dakota
Montana.
Montana
The mouth of the Missouri River is located in the state of Missouri, near the city of St. Louis.
Missouri
The confluence of the Madison River and Jefferson River near Gallatin River, in Gallatin County, Montana.
Montana
The Missouri River begins as Brower's Spring in the state of Montana.
Missouri
The Missouri River officially starts at the confluence of the Jefferson and Madison in Missouri Headwaters State Park near Three Forks, Montana, and is joined by the Gallatin a mile downstream.
In Illinois