The Bohai Sea, the lake area is 251 square kilometers, the water level is 1974 meters), the total capacity is 25.3 billion cubic meters, the water catchment area is 2565 square kilometers, the lake is42.5 kilometers long, the average lake width is6.3 kilometers, the maximum lake depth is 22 meters, the average lake depth is 10.2 meters, and the lake circumference is 117 kilometers. The lake is rich in aquatic products.