The estuary of the Yangtze River is on Chongming Island in Shanghai. The Yangtze River estuary is an important water source in Shanghai. At the same time, it has many functions, such as industrial and agricultural water intake, navigation, pollution reception, reclamation, ecology and so on. The Yangtze River Estuary has become one of the important supports for Shanghai to build a world-class city. The development, utilization and protection of its water resources have become the focus of attention. Which city is the Yangtze River Estuary? The Yangtze River Estuary refers to a section of water at the estuary of the East China Sea. It is about 232 kilometers long from the goose nose of Jiangyin, Jiangsu Province to the chicken bone reef at the estuary. The plane of the Yangtze River estuary is in a trumpet shape. The river surface at the narrow mouth is 5.8 kilometers wide and the river surface at the wide mouth is 90 kilometers wide.
The main stream of the Yangtze River in the first section of the Yangtze River Estuary flows into larger tributaries such as Huangpu River, Liuhe river and Lianqi river. It is a multi branch river section divided by islands and sandbars, mainly composed of North Branch, South Branch, north port, South Port, north channel and South Channel.
The Yangtze River estuary is the gateway of the Yangtze River to the sea and ocean shipping. There are many channels and ports, which has laid a foundation for the economic prosperity of Shanghai and eastern Jiangsu, and has gradually become one of the fastest growing regions in China. （ChangJiangRuHaiKouZaiNaGeChengShi）