Alongside of abundant rivers, China also has lots of lakes. There are more than 2,800 natural lakes, each having a surface area of over one square kilometers, and over 130 lakes, each covering more than 100 square kilometers. There are also a large number of artificial lakes (reservoirs). With different salt content, the lakes are classified as saltwater and freshwater lakes. Large lakes are mainly distributed in the middle and lower reaches of the Yangtze River and on the Qinghai-Tibet Plateau. The Boyang Lake in the south of the Yangtze River is the largest freshwater lake in China while the Qinghai Lake on the Qinghai-Tibet Plateau is the largest saltwater lake.