What is the longest river in the USA?

The Missouri River is the longest river in the United States. Rising in the Eastern Centennial Mountains of the Bitteroot Range of the Rocky Mountains of Southwestern Montana, the Missouri flows east and south for 2,341 miles before entering the Mississippi River north of St. Louis, Missouri.





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A Nile River is considered to be the world's longest river with a total of 6650 km, followed by Amazon (6575 km), Yangtze (6300 km) and Mississippi (6275km).

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Stretches of the Mississippi River within the park corridor exceed water quality standards for mercury, bacteria, sediment, PCBs (polychlorinated biphenyl), and nutrients. Unfortunately, these impairments can make the water unsuitable for fishing, swimming, and drinking.

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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 is credited as the longest river in the world. Its main source is Lake Victoria in east central Africa. From its farthest stream in Burundi, it extends 6,695 km (4,160 miles) in length.

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Answer and Explanation: The deepest river in the United States is the Hudson River, which reaches 200 feet deep at some points. The St. Lawrence River, which runs through parts of the U.S., is slightly deeper with a maximum depth of 250 feet, but mostly flows along the border of the U.S. and into Canada.

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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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The strength of the Amazon River in South America dwarfs other rivers on the planet. The amount of water flowing through the Amazon is greater than the amount carried by the Mississippi, the Yangtze, and the Nile combined.

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Bangladesh has the highest number of rivers (about 700) and is known as the 'land of rivers'. Some major Rivers of Bangladesh are: Brahmaputra, Ganges, Suma, Atrai, Raidak, Mahananda, Teesta, Karnaphuli, Meghna and Bangshi among others.

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The Encyclopedia Britannica gives the length of the Nile as 6,650 kilometers (4,132 miles), to 6,400 kilometers (3,977 miles) for the Amazon, measuring the latter from the headwaters of the Apurimac river in southern Peru.

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The Finke River, which is also called Larapinta by the Aboriginal People, in central Australia is believed to be the oldest river in the world. While the Finke River's exact age is unknown, it is at least over 300 million years old and some of the oldest parts of the river may be over 340 million years old.

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3. Yangtze River - China. With a length of 3,915 miles, the Yangtze River is the third longest river in the world. It is also China's most important water system, culturally, historically and economically.

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The Amazon River near Iquitos, Peru.

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