A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographic
A minor drainage divide south of Buckeye, Arizona. Both branches flow to the Gila River.
The Congo–Nile Divide or the Nile–Congo Watershed is the continental divide that separates the drainage basins of the Congo and Nile rivers. It is about 2,000 kilometres long.
Drainage divide
…into three types: Continental divides in which waters on each side flow to different oceans, such as the Continental Divide of the Americas and the Congo-Nile Divide. Major drainage divides in which waters on each side of the divide never meet but flow into the same ocean, such as the divide between the Yellow River…
Azande people c. 1880. Their territory lay on either side of the northern section of the divide, which was made an international frontier at the Berlin Conference of 1884–85.
The Congo–Nile divide (green line) starts at the triple divide (orange dot) where the Congo, Chad and Nile basins meet. This point is located on the boundary the Central African Republic and Sudan, at the limit between the Vakaga and Haute-Kotto prefectures.
Ruwenzori Mountains in the central part of the divide, to the west of the Albertine rift
Mountains in Rwanda. The volcanoes in the background are the Virunga Mountains, home of the critically endangered mountain gorillas.