Kogin Mbam shine mafi girma a cikin kogin Sanaga a cikin Kamaru. Yana da jimlar tsawon 548 km (341 mi) kuma yana da jimillar magudanar ruwa na 38,000 km2.
Takan taso ne daga Plateau ta Adamawa ta karbi kogin Kim da Ndjim a gefen hagunsa sannan daga baya kogin Noun a bakin damansa kafin ya hadu da kogin Sanaga.[1]