The Amazon enters Brazil

At an average discharge of about 209,000 cubic metres per second (7,400,000 cu ft/s; 209,000,000 L/s; 55,000,000 USgal/s)—approximately
6,591 cubic kilometres per annum (1,581 cu mi/a), greater than the next seven largest independent rivers combined—the Amazon represents 20% of the
global riverine discharge to the ocean.[13] The Amazon basin is the largest drainage basin in the world, with an area of approximately
7,000,000 square kilometres (2,700,000 sq mi).[2] The portion of the river’s drainage basin in Brazil alone is larger than any other river’s basin.
The Amazon enters Brazil with only one-fifth of the flow it finally discharges into the Atlantic Ocean, yet already has a greater flow at this point than the discharge of any other river.[14][15]