Dataset of the rivers with the largest drainage areas in the world. A drainage area is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water. The South American Amazon–Ucayali–Tambo–Ene–Apurímac receives inflows from the largest drainage area, a size of 7 million km2, and flows out primarily to the Atlantic Ocean.
The African rivers, Congo–Chambeshi (Zaïre) river and Nile–Kagera river, have drainage areas of 3.6 million km2 (second largest) and 3.2 million km2 (third largest) respectively The Congo–Chambeshi (Zaïre) river outflows to the Atlantic Ocean as well, while Nile–Kagera river outflows to the Mediterranean sea.
More lists on the world's longest and largest river systems: