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  1. More Images

    Missouri River

    Major river in central United States

    The Missouri River is a river in the Central and Mountain West regions of the United States. The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Mountains of southwestern Montana, then flows east and south for 2,341 miles before entering the Mississippi River north of St. Louis, Missouri. The river drains semi-arid watershed of more than 500,000 square miles, which includes parts of ten U.S. states and two Canadian provinces. Although a tributary of the Mississippi, the Missouri River is slightly longer and carries a comparable volume of water. When combined with the lower Mississippi River, it forms the world's fourth-longest river system. For over 12,000 years, people have depended on the Missouri River and its tributaries as a source of sustenance and transportation. Wikipedia

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  2. en.wikipedia.org

    The Missouri River is a river in the Central and Mountain West regions of the United States.The nation's longest, [13] it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Mountains of southwestern Montana, then flows east and south for 2,341 miles (3,767 km) [6] before entering the Mississippi River north of St. Louis, Missouri. ...
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  4. britannica.com

    Dec 7, 2024Missouri 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).
    Author:The Editors of Encyclopaedia Britannica
  5. science.howstuffworks.com

    Feb 5, 2024Many people claim this, the Mississippi River, to be the longest in the United States. But the USGS gives it the No. 2 spot. Barry Winiker / Getty Images. It's a tricky thing, trying to figure out the length of a specific river, let alone determining the longest river in the U.S. To start, you have to decide whether or not the river's tributaries will count toward the full length. That can ...
  6. en.wikipedia.org

    The longest rivers of the United States include 38 that have main stems of at least 500 miles (800 km) long. The main stem is "the primary downstream segment of a river, as contrasted to its tributaries". [1] The United States Geological Survey (USGS) defines a main-stem segment by listing coordinates for its two end points, called the source and the mouth.
  7. worldatlas.com

    It begins in southern Montana in the Rocky Mountains, first flowing north then generally southeast across the heart of the United States, ending at the Mississippi River, just to the north of St. Louis, Missouri. It is the longest river in the United States (2,500 miles) (4,023 km). U.S. Rivers Page
  8. americanrivers.org

    Missouri River America's Longest River Just west of Bozeman, Montana—where the Gallatin, Jefferson, and Madison rivers converge at Three Forks—America's longest river is born. The Missouri River will travel more than 2,300 miles before it joins the Mississippi in its namesake state at St. Louis, forming the world's fourth longest river system as it rolls […]
  9. worldmapgeo.com

    Jul 8, 2023The Map of Missouri River provides an essential visual representation of this iconic waterway as it winds its way through several states in the United States. The Missouri River is the longest river in North America, stretching over 2,300 miles from its source in the Rocky Mountains of Montana to its confluence with the Mississippi River in ...
  10. worldatlas.com

    The Missouri River. The Missouri River is the longest river in North America. Its source is the Rocky Mountains from where it flows east and south for 2,341 miles before draining in the Mississippi at St. Louis, Missouri. It drains through a sparsely populated and semi-arid watershed that includes a part of the US and two Canadian provinces ...
  11. legendsofamerica.com

    A tributary of the Mississippi River, the Missouri River, at 2,540 miles in length, is the longest river in the United States.The river played an important part in the explorations and expansion of the American West.The headwaters of the Missouri River are in the Rocky Mountains near Three Forks, Montana at an elevation of 4,045 feet, beginning at the confluence of the Jefferson and Madison ...
  12. Basin Report: Missouri River The Missouri is the longest river in the United States. It has a watershed of more than 500,000 square miles, includes portions of 10 states and one Canadian province, and encompasses approximately one-sixth of the United States. The Missouri drains the largest watershed within the United States and produces annual ...

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