Bukavu (bōkäˈvō) [key], city (1984 pop. 167,950), capital of Sud-Kivu province, E Congo (Kinshasa), a port on Lake Kivu. It is an administrative, commercial, and transportation center. Tea and coffee are processed. The city was founded in 1901 and was formerly known as Costermansville. The city has a teachers college and a school of mines. The Mururu hydroelectric plant is there.