These are the longest rivers in South America. The King of rivers, the Amazon River, tops the list at 6,992km. It is also the second longest river in the world, with the Nile River slightly ahead at 7,088km.
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Amazon–Ucayali–Tambo–Ene–Apurímac. The river system, from Amazon River to Ucayali to Tambo to Ene and Apurímac river, is the longest river system in South America at 6,992km, with its drainage area spreading across the width of the South American continent at an area of 7 million square kilometers (largest drainage basin in the world!).
The Amazon river system is also the second longest in the world, with the Nile River system pipping slightly ahead at 7,088km. In terms of discharge volume, the Amazon river system is the largest in the world, discharging at 209,000m3/s onto the Atlantic Ocean.
Río De La Plata–Paraná–Rio Grande. The Paraná river system is the second longest river system in South America at 4,880 kilometers, after the mighty Amazon river. The Paraná river flows south-westerly through Brazil, Paraguay and Argentina, before discharging onto Río de la Plata.
Tocantins–Araguaia. The Tocantins–Araguaia river system stretches a combined 3,650 kilometers; it is the third longest river system in South America and the longest river that is wholly located in Brazil.
The river basin has a vibrant aqua-fauna ecosystem, including large mammals like the Amazonian manatee, Araguaian river dolphin and reptiles such as the black caiman, spectacled caiman and yellow-spotted river turtle.
More lists on the world's longest and largest river systems: