What is the origin of Qiandao Lake?

Qiandao Lake was originally named Xin 'anjiang Reservoir. 1959 Xin' anjiang Hydropower Station is the first artificial lake in East China after its completion and storage in September.

1, where Qiandao Lake is located

Qiandao Lake (Xin 'anjiang Reservoir) is located in Chun 'an County, Hangzhou City, Zhejiang Province, with a small part connected with the northwest of jiande city. The artificial lake for Xin 'anjiang Hydropower Station was built in 1955 and completed in 1960. The dam is105m high and 462m long. The length of the reservoir is about 150km, and the widest part exceeds 10km. The deepest part exceeds 100 m, with an average water depth of 30.44 m. Under normal water level, the area is about 580 square kilometers, and the storage capacity178 billion cubic meters. At the highest water level, there are more than 0.25 square kilometers of land bridge islands 1078, mainly islands below 2 square kilometers, with an island area of * * 409 square kilometers.

1, Qiandao Lake ecology

The trend of Qiandao Lake from eutrophication to eutrophication, the pollution elements are heavy metals, nitrogen, phosphorus and organic matter, cages and cruise ships in turn; The water temperature is stratified, and the annual average temperature is 19.6℃. In September, the surface layer (from water surface to underwater 10m) changed greatly, with an average temperature of 28.2 ~ 24.4℃, which maintained a large amount of water temperature, and was called warm water layer, which was greatly affected by floods. The middle layer (10-30m) is a constant temperature layer, and the water temperature keeps at 65440 all the year round.