Amazon River the world's second longest river - the Nile River in Africa is the longest.

Amazon River (Spanish: Río Amazonas, Portuguese: Rio Amazonas) is a river in South America which is the world's second longest river - the Nile River in Africa is the longest. Amazon River has the greatest total flow of any river, carrying more than the Mississippi River, the Nile, and Yangtze combined. Amazon also has the largest peraliran system of the entire river system. Although the Nile the longest river, but Amazon can be considered "the strongest" (seen from the amount of water flowing per second).

The amount of freshwater released into the Atlantic Ocean is enormous: 184,000 m³ per second (6.5 million ft ³) in the rainy season. Amazon's flow is one-fifth of the total fresh water entering the sea around the world. The water in the sea near the river has a low salt content up to hundreds of miles away.
The main river (usually has a width of one to six miles) is navigable for large ocean steamers to Manaus, nearly 800 miles up the river from its mouth. Smaller ships weighing 3,000 tons [1] and 5.5 m (18 ft) draft [2] can reach as far as Iquitos, 3700 km (2,300 miles) from the sea. Smaller riverboats can reach 780 km (486 miles) farther Achual Point. Passing from there, only small boats can go up to Pongo de Manseriche, above Achual Point.
This river takes water from the coordinates 5 ° N to 20 ° S latitude. The most distant sources are found in the inter-Andean plateau, a short distance away to the Pacific Ocean, and after a distance of 7200 km (4,800 mi) through the interior of Peru and across Brazil, it enters the Atlantic Ocean at the equator.