Largest Rivers by Discharge Volume in South America
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Chart 1: Largest Rivers in South America by Discharge Volume
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The largest rivers by discharge volume in South America - the King of rivers, the Amazon River system, tops the list with a discharge volume of 209,000m3/s, followed by the Orinoco River (33,000m3/s) and at third, the Madeira–Mamoré–Grande–Caine–Rocha river system at 31,200m/s.

Compare the Amazon River with the Orinoco River.

  Top 30 ranks, by average discharge in descending order

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The full dataset Rivers of the World contains 223 data items and you can smartly rank, query and segment data based on outflow and region.


More on the South American rivers:

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.

Orinoco River. The Orinoco River is the second largest river by discharge volume of water at 33,000m3/s in South America, behind the mighty Amazon river which has the largest flow rate at 209,000m3/s. In terms of drainage area, Orinoco River (or Orinoquia) covers an area of 1,380,000km2stretching from Venezuela to Colombia and Guyana, fourth largest in South America.

The Madeira–Mamoré–Grande–Caine–Rocha river system has a drainage area of 1,485,200km2, third-largest in South America, stretching across Brazil, Peru and Bolivia. It is also the third-largest river system by discharge volume at 31,200m3/s in South America, behind the Orinoco River and the Amazon River.

The Madeira–Mamoré–Grande–Caine–Rocha river system is home to a rich diversity of freshwater fish species, with close to 900 fish species estimated in the Madeira River Basin.


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