Amazon River
The Amazon River moves more water than the next eight largest rivers of the world combined and has the largest drainage basin in the world.  It accounts for about one fifth of the world's total river flow.  During the wet season, parts of the Amazon exceed  in width.  Because of its size, it is sometimes called The  Sea, but it is not the world's longest river system.  The world's longest river is the Nile River, with the Amazon being second-longest.