Ruvuma River - Wikipedia
Ruvuma River, formerly also known as the Rovuma River, is a river in the African Great Lakes region. During the greater part of its course, it forms the border between Tanzania and Mozambique (in Mozambique known as Rio Rovuma). The river is 800 kilometres (497 mi) long, with a drainage basin 155,500 square kilometres (60,000 sq mi) in size.