WikiProject Rivers of Africa
This page tracks the progress of waterway mapping in Africa.
Basins/watersheds in Africa
Major river basins
These are the major ones:
see Wikipedia: Endorheic riverbasins in Africa for details.
Rivers and lakes without connection to the oceans:
here is a complete Wikipedia List
The Nile (Arabic: النيل, transliteration: an-nīl, Ancient Egyptian iteru or Ḥ'pī, Coptic piaro or phiaro) is a major north-flowing river in Africa, generally regarded as the longest river in the world. (from Wikipedia, the free encyclopedia)
Major source of the Nile's water is the White Nile and the Blue Nile.
Overview: Wikimedia picture