It arises at Lake Oku (6°11′34″N 10°27′14″E / 6.19278°N 10.45389°E / 6.19278; 10.45389) and flows south, it is joined by the Monoun River and flows south in the valley between the mountains Ngotsetzezan and Mount Yahou.

It forms the boundary between the Bamiléké area and the Bamun area, and played a key role in the history of the Bamiléké people.

[citation needed] The Noun River was dammed at Bamendjing in 1975[2] (5°41′55″N 10°30′03″E / 5.69861°N 10.50083°E / 5.69861; 10.50083) creating a reservoir with the same name.

[3] The Noun River hosts hippopotamus that can be seen all year long, in the wild parts of the river, along with many birds, such as the palm nut vulture, the bee-eater, the hammerkop, and the kingfisher.

This article related to a river in Cameroon is a stub.