The largest river in the world by discharge volume is the Amazon River. Flowing through South America, primarily Brazil, it spans approximately 4,345 miles (7,062 kilometers), making it one of the longest rivers as well. The Amazon holds the title due to its vast basin and extensive network of tributaries, with an average discharge of about 209,000 cubic meters per second, which is more than the next seven largest rivers combined. The river is also crucial for biodiversity, housing thousands of species of plants and animals, and is significant for the indigenous communities and ecosystems in its region.