The Mbam, Kim, and Djérem are the major rivers of the Atlantic basin. The Mbam and Kim both rise in the southwest before flowing into the Centre Province. The Djérem forms in eastern and western branches, which converge at the Mbakaou Reservoir. The river then flows south into the East Province. Due to the reservoir (which holds two million cubic metres of water), the Djérem forms an important source of hydroelectric power for Cameroon. Finally, the Lom rises about 60 km east of Meiganga before flowing south into the East Province. The Djérem eventually becomes the Sanaga River, and these other rivers ultimately empty into it.