Qiandao Lake, that is, Xin'anjiang Reservoir, is located in Chun'an County, Hangzhou City, Zhejiang Province. A small part is connected to the northwest of Jiande City, Hangzhou City. It is an artificial lake formed for the construction of Xin'anjiang Hydropower Station to stop the upper reaches of Xin'an River. Qiandao Lake water in China's Great Lakes ranked first in quality water, as a national-level water body, known as "the world's first beautiful water".