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
Begnas Lake is used for irrigation and some parts of the lake are used as caged fisheries. The Begnas lake area has a number of swampy areas around it, many of which have been converted to paddy fields day by day. Begnas Lake Begnas Lake is a freshwater lake in Pokhara Lekhnath Metropolis of Kaski district of Nepal located in the south-east of the Pokhara Valley. The lake is the third largest lake of Nepal and second largest, after Phewa lake, among the eight lakes in Pokhara Valley. Water level in the lake fluctuates seasonally due to rain, and utilization for irrigation.