River, western Côte d'Ivoire.
It rises as the Tienba in the northwestern highlands and becomes the Sassandra at its confluence with the Férédougouba. It courses southeast 400 mi (650 km) to empty into the Gulf of Guinea at the seaport of Sassandra. Its upper reaches have been panned for diamonds; its lower course marks the eastern boundary of the Taï Reserve, known for its pygmy hippopotamus.