Gallatin River
The Gallatin River is a tributary of the Missouri River, approximately 120 mi (193 km long), in the U.S. states of Wyoming and Montana. It is one of three rivers, along with the Jefferson and Madison, that converge near Three Forks, Montana, to form the Missouri.

It originates in the northwest corner of Yellowstone National Park in northwestern Wyoming, in the Gallatin Range of the Rocky Mountains. It flows northwest through Gallatin National Forest, past Big Sky, Montana, and joins the Jefferson and Madison approximately 30 mi (48 km) northwest of Bozeman.
U.S. Highway 191 follows the river from the Wyoming border to just outside Bozeman.

The river was named in July 1805 by Meriwether Lewis at Three Forks. The eastern fork of the three, it was named for Albert Gallatin, the U.S. Treasury Secretary from 1801–14. The western fork was named for President Thomas Jefferson and the central fork for Secretary of State James Madison.

The Gallatin River is one of the best whitewater runs in the Yellowstone-Teton Area. In June, when the snowmelt is released from the mountains, the river has a class IV section called the "Mad Mile". This section is over a mile long and contains continuous stretches of challenging whitewater. Rafting companies offer trips on this river – on the Mad Mile Section as well as other, less challenging sections.

The Gallatin River is an amazingly scenic river – winding through high alpine meadows, dropping into the rocky Gallatin Canyon, and flowing out into the Gallatin Valley. It is an exceptionally popular fly fishing destination for rainbow trout, brown trout and mountain whitefish. Portions of the river are designated as a Blue Ribbon trout stream while the remainder is designated Red Ribbon by the Montana Fish, Wildlife and Parks Department. The river is closed to fishing from boats from Yellowstone Park to the confluence with the East Gallatin River.

Parts of the movie "A River Runs Through It" were filmed on the Gallatin.

The river is a Class I water from the Taylor Fork to its confluence with the Missouri for the purposes of public recreational access.
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Missouri River
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U.S. state
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Wyoming
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Montana
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Madison
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Gallatin Range
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Rocky Mountains
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Gallatin National Forest
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Big Sky, Montana
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Bozeman
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U.S. Highway 191
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Meriwether Lewis
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Albert Gallatin
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Thomas Jefferson
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James Madison
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Blue Ribbon trout stream
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Yellowstone Park
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East Gallatin River
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A River Runs Through It
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Gallatin River
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Gallatin River
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Gallatin River
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Gallatin River
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1805-07-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
July 1805
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1801
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