How did the ancients fight floods without power stations?

Flood is a natural disaster since ancient times, because the property loss caused by flood is the first of all natural disasters. People have made a lot of contributions to this, and even sacrificed their precious lives for it. Especially in ancient times when science and technology were underdeveloped, there was no power station to flood. They took a series of protective measures to prevent and fight floods, such as building flood levees, establishing early warning facilities and early warning systems.

First, the earliest flood control measure for dam construction is to build a dam for flood control. In Qing Dynasty, a flood control seawall with a length of 150 kilometers was built. The seawall consists of huge stone strips, with a maximum of 20 floors and a minimum of 5 floors. Moreover, a dike river nearly seven meters wide was dug behind the flood control dam as a precaution. In addition, a spare dam was built on the inner side of the seawall. Three layers of protection ensure that flood control is foolproof.

Second, the establishment of hydrological stations and water monuments In addition to building dams for flood control, perfect early warning equipment has been established to monitor the arrival of floods. Hydrological stations have been set up to monitor the water level of major rivers. Tang dynasty? Baiheliang? It is the most classic hydrological station in ancient times, and people predict the arrival of floods by observing the water level on Baiheliang. In the Song Dynasty, in addition to following the method of the Tang Dynasty, a water monument was built to record the highest water level every year.

Third, establish a perfect flood forecasting system. By the Qin Dynasty, a relatively complete flood forecasting system had been established. During the flood season, local officials will regularly submit the changes of local water quantity to the court. It will be more perfect in the Song Dynasty. During the flood season, local officials are required to stick to their posts and report any changes immediately. If you don't report it, you will be sentenced to death if the circumstances are serious. And in order to report it as soon as possible, flood stations have been set up everywhere.

Ancient people used to build dams and establish perfect flood monitoring facilities and flood reporting systems to resist floods. In addition to these ancients, they will also use the method of opening floodgates to fight floods. The ancients used their wisdom to make great contributions to protecting crops and homes. Since ancient times, the people of China have fought fiercely against floods. With the development of science and technology, the methods of fighting floods are gradually changing. I believe that in the near future, there will be a way to completely solve the flood, so that our country will no longer be hurt.