Bukavu (former official names: Costermansville (French) and Costermansstad (Dutch)) is a city in eastern Democratic Republic of the Congo (DRC), lying at the extreme south-western edge of Lake Kivu, west of Cyangugu in Rwanda, and separated from it by the outlet of the Ruzizi River. It is the capital of the South Kivu province and as of 2012 it had an estimated population of 806,940. The current Governor of Bukavu is Marcelin chishambo.