Ruvuma River

Portuguese  Rio Rovuma,   perennial river rising in the Matagoro Mountains in southeastern Tanzania. Flowing eastward into the Indian Ocean at a point about 20 miles (32 km) north of Cape Delgado, the Ruvuma River forms the boundary between Tanzania and Mozambique for a length of 400 miles (650 km) from the coast and has a total length of about 475 miles (760 km). Its chief tributaries are the Lugenda, Lucheringo, Likonde,