Fuxian, China's largest freshwater lake in deep-water type, the source of the first Great Lakes Pearl, is a Southern dish River system, located in Yuxi City, Yunnan Chengjiang, Jiangchuan, China Ning between three counties, more than 60 kilometers from Kunming. Fuxian is a north-south fault dissolution lake, shaped like an inverted gourd-shaped, big ends in the middle of small, northern broad and deep, narrow and shallow south, the brief was shaped throat. 1722.5 meters above sea level, the lake, the lake area of ​​216.6 square kilometers, the lake volume was 20.62 billion cubic meters, the average depth of the lake is 95.2 meters, the deepest 158.9 meters, the lake capacity of 20.62 billion cubic meters, equivalent to 12 Dianchi Lake water, six times the amount of water Erhai Lake Taihu 4.5 times, accounting for nine plateau lakes in Yunnan total storage capacity of 72.8%, accounting for the amount of fresh water lakes 9.16%