The source of the Bakoy is at an elevation of 760 m in the granite Monts Ménien to the northwest of Siguiri in Guinea. The river flows north and forms part of the international border between Guinea and Mali. It then meanders across the Manding Plateau and joins its principal affluent, the Baloué, which rises to the west of Bamako.
The Bakoy River's origin is in the granite Monts Ménien region, northwest of Siguiri, Guinea, where it flows north and forms part of the border between Guinea and Mali. It then travels across the Manding Plateau before joining its main tributary, the Baloué, which originates west of Bamako.