Why did Wangjiaba open floodgates to discharge flood?

The flood discharge of Wangjiaba sluice is to ensure the safety of the middle reaches of Huaihe River, which is the top priority of flood control and flood fighting in Huaihe River and the main task of Wangjiaba sluice.

Wangjiaba water control project is located on the main stream of Huaihe River, which is mainly composed of Wangjiaba sluice and Mengwa flood storage area. The design flow of Wangjiaba sluice is 1.626 cubic meters per second, which is called "the first sluice of Huaihe River".

Wangjiaba sluice, as the entrance control project of Mengwa flood storage area, is an important water storage project at the intersection of the middle and upper reaches of Huaihe River. The flood water level is reduced, the flood peak of Huaihe River and the upstream disasters are reduced, and the peak flow is reduced to the maximum 1.626 m3/s, which plays a certain role in ensuring the safety of upstream and downstream dikes and eliminates the water conservancy disputes in Guansha Lake in Henan and Anhui provinces in history. It has played an important role in ensuring the safety of Lianghuai Coal Mine in Bengbu City and the trunk railway lines of Jinpu and Fuhuai.