Flowing gently before us is the Dazhi River. It is more than just a waterway. It’s a testament to Shanghai’s ingenuity. This river is the largest man-made municipal canal excavated in Shanghai. This happened in the early years after the liberation.
Imagine Shanghai in 1977. Nanhui County faced challenges with three unconnected water systems. Irrigation and drainage in Pudong needed improvement. Shanghai decided to excavate the Dazhi River to solve these problems.
Today the Dazhi River serves many crucial functions. It aids in flood control and drainage. It also assists with navigation, irrigation, and water storage. Finally it helps with water regulation. The Dazhi River plays a pivotal role in Shanghai’s water management system.
Interestingly the Dazhi River also contributes to Dishui Lake’s water quality. A riverway was built in Nanhui district. This riverway introduces water from the Dazhi River into Dishui Lake. Ecological and biological treatment methods ensure the water is clearer.
Consider its location. The Dazhi River meets the Huangpu River and Jinhui River. The Huangpu River is Shanghai’s mother river. It is a vital channel for shipping. The Dazhi River and other canals divide the area into sections.
The Dazhi River is part of Shanghai’s southward urban development. It faces challenges in urban growth and environmental protection. The south bank of the Huangpu River and the Dazhi River form an ecological corridor. This requires careful management.
The area around the Dazhi River has compatible industrial areas. New residential layouts drive urban development. The Science and Technology Innovation Centre is a key development in the northwest. The northeast focuses on sports and events. The south banks emphasize ecology and new industries.
Flood control is a major consideration for the Dazhi River. A comprehensive ring water system exists. It features a three-level flood control system. The first level handles floods that occur once a century. It allows waterfront activities and defends against daily floods. The second level addresses floods that happen once in a millennium. It deals with extreme floods.
Finally the third level is around the water system ring. Urban water bodies, rain gardens, and buffer channels regulate rainwater. They reduce flooding and provide urban landscape space. The riverbank is an ecological corridor dominated by nature. Floodwalls are inland to strengthen the public space’s connection to the river.
So, as we stand here let’s appreciate the Dazhi River’s role. It is a vital piece of Shanghai’s infrastructure. It shows how the city balances development with environmental concerns. The Dazhi River is an essential part of Shanghai’s story.