Lake Superior the Soo Locks. Lake Superior is the largest freshwater lake in the world in area (if Lakes Michigan and Huron are taken separately; "see Lake Michigan–Huron"), and the third largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa. The Caspian Sea, while larger than Lake Superior in both surface area and volume, is brackish; though presently isolated, prehistorically the Caspian has been repeatedly connected to and isolated from the Mediterranean via the Black Sea. Lake Superior has a surface area of , which is approximately the size of South Carolina or Austria. It has a
Bosten Lake Bosten Lake Bosten Lake (, Uyghur: / / "Baghrash Köli / Baƣrax Kɵli", Chagatai: "Bostang") is a freshwater lake on the northeastern rim of the Tarim Basin, about east of Yanqi and northeast of Korla, Xinjiang, China in the Bayin'gholin Mongol Autonomous Prefecture. Covering an area of about (together with adjacent small lakes), it is the largest lake in Xinjiang and one of the largest inland freshwater lakes in China. Bosten lake receives water inflow from a catchment area of . The lake's Uyghur and Chinese names are sometimes rendered as "Bosten Hu", "Bagrax-hu", "Bagrasch-köl", "Baghrasch köl", "Bagratsch-kul", "Bositeng Lake"