 lake tanganyika is an african great lake. it is estimated to be the second largest freshwater lake in the world by volume, and the second deepest, in both cases, after only lake baikal in siberia; it is also the world's longest freshwater lake. the lake is divided among four countries â tanzania, the democratic republic of the congo, burundi, and zambia, with tanzania (46%) and the drc (40%) possessing the majority of the lake. the water flows into the congo river system and ultimately into the atlantic ocean. ==geography== lake tanganyika is situated within the albertine rift, the western branch of the east african rift, and is confined by the mountainous walls of the valley. it is the largest rift lake in africa and the second largest lake by volume in the world. it is the deepest lake in africa and holds the greatest volume of fresh water; accounting for 18% of the world's available fresh water. it extends for  in a general north-south direction and averages  in width. the lake covers , with a shoreline of , a mean depth of  and a maximum depth of  (in the northern basin). it holds an estimated .{{cite web|url=http://www.ilec.or.jp/database/afr/dafr06.html|title=datbase summary: lake tanganyika |publisher=www.ilec.or.jp|acce
African_Great_Lakes Border_tripoints BurundiaDemocratic_Republic_of_the_Congo_border BurundiaTanzania_border Democratic_Republic_of_the_CongoaZambia_border International_lakes_of_Africa Lake_Tanganyika Lakes_of_Burundi Lakes_of_Tanzania Lakes_of_Zambia Lakes_of_the_Democratic_Republic_of_the_Congo Lakes_of_the_Great_Rift_Valley TanzaniaaZambia_border