Geography of Africa outer ranges. The main drainage of the continent is to the north and west, or towards the basin of the Atlantic Ocean. To the main African rivers belong: Nile (the longest river of Africa), Congo (river with the highest water discharge on the continent) and the Niger, which flows half of its length through the arid areas. The largest lakes are the following: Lake Victoria (Lake Ukerewe), Lake Chad, in the centre of the continent, Lake Tanganyika, lying between the Democratic Republic of Congo, Burundi, Tanzania and Zambia. There is also the considerably large Lake Malawi stretching along the eastern
Geography of the African Union Geography of the African Union The African Union covers almost the entirety of continental Africa and several off-shore islands. Consequently, it is wildly diverse, including the world's largest hot desert (the Sahara), huge jungles and savannas, and the world's longest river (the Nile). The AU presently has an area of 29,922,059 km² (18,592,705 mi²), with 24,165 km² (15,015 mi²) of coastline. The vast majority of this area is on continental Africa, while the only significant territory off the mainland is the island of Madagascar (the world's fourth largest), accounting for slightly less than 2% of the total. African Union at