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Article: Missouri River
- Article from:
- Gale Encyclopedia of U.S. Economic History
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MISSOURI RIVER
The Missouri River is the longest river in the United States. It flows for 2,466 miles (3,968 kilometers). Its source lies in the Rocky Mountains of southwestern Montana; the river is formed by the confluence of the Jefferson, Madison, and Gallatin rivers at Three Forks, Montana. From there the Missouri flows east and southeast, ultimately joining the Mississippi River about 10 miles (16 kilometers) north of St. Louis, Missouri. The Missouri River flows through Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, and Missouri. From the Mississippi River, the Missouri is navigable by barges and towboats west and north as far as Sioux City, Iowa. Above Sioux City ...