Lake Victoria. Lake Victoria is one of the African Great Lakes. With a surface area of approximately 59,947??km2 (23,146??sq??mi), Lake Victoria is Africa's largest lake by area, the world's largest tropical lake, and the world's second-largest fresh water lake by surface area after Lake Superior in North America. In terms of volume, Lake Victoria is the world's ninth-largest continental lake, containing about 2,424??km3 (1.965??109??acre???ft) of water. Lake Victoria occupies a shallow depression in Africa. The lake has an average depth of 40??m (130??ft) and a maximum depth of 80???81??m (262???266??ft). Its catchment area covers 169,858??km2 (65,583??sq??mi). The lake has a shoreline of 7,142??km (4,438??mi) when digitized at the 1:25,000 level, with islands constituting 3.7% of this length.