How did the ancients control floods?

The continuous rainfall in summer led to the continuous increase of water volume, and eventually the river flooded, flooding the people and farmland on both sides. So how did the ancients manage the flood?

First of all, we should be flexible in dealing with floods. We can't always deal with floods in one way. Every river has a different curve. The depth of water, the speed of water flow and the height of terrain all need to know the actual situation in person. Only by visiting and measuring can we thoroughly understand the specific situation of the river and formulate effective waterproof measures.

In ancient times, Dayu's father managed floods by building many dams and chasing floods. However, after the floods, the water potential was too strong, which directly washed away all the dams that people spent their energy building. Finally, Dayu's father failed to control water, and then the leaders at that time appointed Dayu as the leader of water control. After Dayu took office, he inspected the terrain, drew countless maps to control water, and finally decided to clean up the river, dig out the sediment in the river and correct the ditch to control water.

During the Ming Dynasty, the Yellow River flooded and many banks burst. The Ming court sent people to govern the Yellow River for many times, but there was no result. Shen Shixing in Ming Dynasty sent Pan Jixun, who was good at water control, to control floods. Pan Jixun adopted the method of introducing clear water into the Yellow River to reduce the sediment volume, and reduced the flood by narrowing the river channel, and achieved remarkable results. Pan Jixun's flood control model has created a new idea and pushed the ancient flood control project to a new height. Even in the modern river regulation scheme, Pan Jixun's flood control thought at that time was strongly borrowed.