The Menchum River and its tributaries drains a large area of the Northwest Region of Cameroon. It in turn is a tributary of the Benue River in Nigeria. The Menchum, Donga and Katsina Ala rivers all flow west from the Northeast Region to join the Benue in Nigeria. The Menchum drains the Oku-Kom highlands, which have an elevation of 2,400 metres aroun…The Menchum River and its tributaries drains a large area of the Northwest Region of Cameroon. It in turn is a tributary of the Benue River in Nigeria. The Menchum, Donga and Katsina Ala rivers all flow west from the Northeast Region to join the Benue in Nigeria. The Menchum drains the Oku-Kom highlands, which have an elevation of 2,400 metres around Lake Oku, falling to about 800 metres at Mbonkissu to the west of Fundong. The highlands, formed by volcanic action, have been dissected by steep valleys carved out by fast-flowing streams.