This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name.
The western third of Rwanda is mainly covered by a mountain range to the east of the Albertine Rift.
[1] Most of Rwanda lies to the east of the Congo-Nile Divide and drains into the Nile basin.
The main rivers are Mwogo, Rukarara, Mukungwa, Base, Nyabarongo and the Akanyaru.
The Nyabarongo is called the Akagera after receiving the waters of Lake Rweru.