Noun River (Cameroon)
The Noun River is a river of the West Province of Cameroon. It arises at Lake Oku (6°11′34″N 10°27′14″E / 6.19278°N 10.45389°E) and flows south, it is joined by the Monoun River and flows south in the valley between the mountains Ngotsetzezan and Mount Yahou. It turns east at about 5° N latitude. Its mouth is at the Mbam River (4°54′42″N 11°06′02″E / 4.91167°N 11.10056°E), which itself is a tributary of the Sanaga River.
It forms the boundary between the Bamiléké area and the Bamun area, and played a key role in the history of the Bamileke people.
The Noun River was dammed at Bamendjing in 1975 (5°41′55″N 10°30′03″E / 5.69861°N 10.50083°E) creating a reservoir with the same name. At its maximum the reservoir is 32 km long and 276 km wide. Its surface area varies between 150 km2 and 300 km2.
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