Dianchi Lake is also known as Kunming Lake, Kunming Lake, Nanze Lake and Dianhai Lake. In the southwest of Kunming, there are rivers such as Panlong River flowing into the lake. The lake is 1886 meters above sea level and covers an area of 330 square kilometers. The largest freshwater lake in Yunnan Province is known as plateau pearl. The average water depth is 5 meters and the deepest is 8 meters. The Lake drains from the southwest estuary, known as Mantis River, which is the upper source of Pudu River, a tributary of Jinsha River in the upper reaches of the Yangtze River. Dianchi Lake is a national tourist resort in China with beautiful scenery. It is surrounded by Yunnan Ethnic Villages, Yunnan Ethnic Museum, Xishan Huating Temple, Taihua Temple, Sanqing Pavilion, Longmen, Qiongzhu Temple, Grand View Tower, Panlong Temple, Zhenghe Park and other scenic spots. The resort covers an area of 18 square kilometers. Floods and floods often occurred in the area around the lake. As early as 1262, Songhua Dam was built on Panlong River. In 1268, Haikou River was excavated to increase the discharge of Dianchi Lake and alleviate the floods around the lake. After 1955, Xianjun built more than ten large and medium-sized reservoirs on the rivers upstream of the lake, and dozens of electric power irrigation and drainage stations along the lake to relieve floods and ensure farmland irrigation and urban industrial and domestic water use. Cyprinus carpio, crucian carp, goldfish and so on produced in the lake