Amazon River

The Amazon River in South America is the largest river in the world by discharge volume of water, and the second-longest or longest river system in the world, a title which is disputed with the Nile. For nearly a century, the headwaters of the Apurímac River on Nevado Mismi in Peru had been considered the Amazon basin's most distant source, until a 2014 study found the farthest source to be the headwaters of the Mantaro River on the Cordillera Rumi Cruz in Peru.