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Missouri River
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The upper Missouri River at Gates of the Mountains, western Montana, north of Helena. Missouri River basin. Lewis and Clark Expedition Black Eagle Dam and (foreground) Black Eagle Falls on the Missouri River, near Great Falls, west-central Montana, U.S. Fort Peck Dam on the Missouri River near Glasgow, northeastern Montana, U.S. Missouri River Fort Randall Dam
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Missouri River summary
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Tower Bridge over the Thames River in London, England. Opened in 1894. Remains an Important Traffic Route with 40,000 Crossings Every Day.
Guess the City by Its River Quiz
water glass on white background. (drink; clear; clean water; liquid)
Water and its Varying Forms
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The upper Missouri River at Gates of the Mountains, western Montana, north of Helena.
The upper Missouri River at Gates of the Mountains, western Montana, north of Helena.

Missouri River

river, United States
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Also known as: Oumessourit River, Peki-tan-oui
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History

Missouri River, longest tributary of the Mississippi River and second longest river in North America. It is formed by the confluence of the Jefferson, Madison, and Gallatin rivers in the Rocky Mountains area of southwestern Montana (Gallatin county), U.S., about 4,000 feet (1,200 metres) above sea level. The Missouri proper has a total course of 2,315 miles (3,726 km). Some sources, however, give the combined lengths of the Missouri proper and the Red Rock River...

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