ABSTRACT
Zandeland is intersected by innumerable streams and rivers which form part of the Nile and Congo systems. The frontier between the Sudan and the Belgian Congo can be taken as approximately the line of the watershed. The main tributary rivers of the Nile system are the Meridi and Sueh Rivers which flow eventually into the Bahr el Ghazal. The main affluents of the Congo system are the Mbomu River, which demarcates the frontier between French and Belgian administered Zandeland, and the Uele River which joins the Mbomu River, just to the west of Zandeland, to form the great Ubangi River.
