Which Rivers Drain the Andean Region?

The major rivers that drain the Andes include:

• Amazon River – World's largest by volume, flows through Ecuador, Peru, Colombia, Venezuela, and Brazil to the Atlantic.
• Magdalena River – Colombia's longest river, empties into the Caribbean Sea.
• Cauca River – Colombia's second longest, joins the Magdalena.
• Orinoco River – Third longest in South America, flows through Venezuela and Colombia to the Atlantic.
• Paraná River – Second longest in South America, runs through Brazil, Argentina, Paraguay to the Atlantic.
• Uruguay River – Fifth longest in South America, flows through Brazil, Uruguay, Argentina to the Atlantic.