What river flows the most water in the US?

Another way to measure the size of a river is by the amount of water it discharges. Using this measure the Mississippi River is the 15th largest river in the world discharging 16,792 cubic meters (593,003 cubic feet) of water per second into the Gulf of Mexico.



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Amazon River of South America is the second longest river in the world with a length of 6,400 km. But it is by far the largest river by water flow with an average discharge greater than the next seven largest rivers combined.

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The Missouri River is the longest river in North America and the United States (2,341 mi (3,767 km)). The second longest river in North America and the United States is the Mississippi River (2,320 mi (3,730 km)).

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The Congo is the deepest river in the world. Its headwaters are in the north-east of Zambia, between Lake Tanganyika and Lake Nyasa (Malawi), 1760 metres above sea level; it flows into the Atlantic Ocean.

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The Nile River is the longest river in the world at 4,132 miles (6,650 km). It Flows from central Africa northward through northeastern Africa to the Mediterranean Sea and has three principal streams: the Blue Nile, the Atbara, and the White Nile.

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The state with the largest total area of water is Alaska, which has 94,743 square miles of water. Alaska contains approximately 12,000 rivers, 3 million lakes larger than 5 acres, and numerous creeks and ponds, accounting for more than 14% of the state's total area.

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Cutting a diagonal northeast channel across Montana for nearly 700 miles to its confluence with the Missouri River in North Dakota, the Yellowstone River is the longest free-flowing river in the lower 48 states.

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