Erhai Lake, the lake area is 252 square kilometers (water level is 1974 meters), the total capacity is 2.53 billion cubic meters, the catchment area is 2565 square kilometers, the lake is 42.5 kilometers long, the average lake width is 6.3 kilometers, the maximum lake depth is 22 meters, the average lake It is 10.2 meters deep and has a circumference of 117 kilometers. When the water level of Erhai Lake is 1966 meters (elevation 85), the length from north to south is 42.0 kilometers, the maximum width from east to west is 8.8 kilometers, the minimum is 3.05 kilometers, the maximum water depth is 21.5 meters, and the average water depth is 10.8 meters. meters, the area of islands in the lake is 0.748 square kilometers, and the lake shoreline is 129.14 kilometers. It is the second largest freshwater lake in the Yunnan Plateau after Dianchi Lake. BGM:by 朴树 from china shooting equipment:DJI drone