Huangpu River, the last tributary of the Yangtze River before it enters the East China Sea. It is also the largest river in Shanghai. Dianshan Lake, which originates mainly from Dianfeng, Zhujiajiao Town, Qingpu District, Shanghai (it is also said that the source of the upper reaches of Taihu Lake, the source of the Huangpu River, is the source of the Huangpu River [23]), and flows through Qingpu, Songjiang, Fengxian, Minhang, Xuhui, Huangpu, Hongkou, Yangpu, Pudong New Area, Baoshan and other districts. Inject the Yangtze River to Wusongkou. The total length is about 113 kilometers, the basin area is about 2.4 10,000 square kilometers [10], and the river is 300 to 770 meters wide. [1] There are many tributaries, the larger ones are Wusong River, Taipu River, Dazhengtang, etc. The average runoff of the Huangpu River for many years is 319 cubic meters/s, and the corresponding water volume is 100.6 billion cubic meters. The annual variation is large, and the annual distribution of runoff is slightly greater than the flood stage. The Huangpu River is located at the front edge of the Yangtze River Delta. The water is flat and deeply affected by the tide. The maximum flow rate of the incoming tide can reach 2 meters per second, and the maximum flow rate of the ebb tide is1.8 meters per second. [4] The first time in history, the name "Huangpu" appeared in the Southern Song Dynasty Qiandao seven years (1171), when it was called "Huangpu Tang", a tributary of the Wuxu River. It was only in the Southern Song Dynasty (1250), in the Xilin Jishan Temple stele, that the name "Huangpu" was officially known. In the Yuan Dynasty, due to the gradual widening of the river, it is known as "Dahuangpu". At the beginning of the Ming Dynasty, the lower reaches of the Wuxu River were seriously silted. The house department Shangshu Xiayuan Jizuo asked to dredge and transform Dahuangpu, chiselled wide near Fanjiaxuan, forming Huangpu water system. The river body dredged several times, the surface of the Great Huangpu River was constantly widened, and the later name was Huangpu River, replacing the Wuxu River as the main stream of the Taihu Lake system into the sea.