A drainagebasin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water
The list of drainagebasins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain
tributaries of the Amazon river. The Amazon represents 20% of the global riverine discharge into oceans. The Amazonbasin is the largest drainagebasin in the world
diversity of species. During the mid-Eocene, it is believed that the drainagebasin of the Amazon was split along the middle of the continent by the Purus Arch