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
Nyabarongo River Nyabarongo River The Nyabarongo (or Nyawarungu) is a major river in Rwanda, part of the upper headwaters of the Nile. At 297 km (184 miles), it is the longest river entirely in Rwanda. The river begins its course at the confluence of the rivers Mbirurume and Mwogo in the South West of the country. These two rivers themselves begin in Nyungwe Forest, and are considered by some to be the most distant source of the Nile. From its start, Nyabarongo flows northward for 85 km (53 miles), and forms the border between the Western and Southern Provinces. At the confluence