Why can't flood discharge be carried out in advance?

Because the flood discharge has a great influence on the flood discharge area below, the road becomes a stream and the river becomes a river. However, beyond this water level line, the reservoir is in danger of breaking its banks, and it is necessary to ask the superior before releasing water. When it rains continuously, if the water level line does not reach the highest position, it is not easy to discharge water and flood.

When the reservoir is completed, many experts accurately calculate its compressive capacity according to its construction materials, depth and size, and then give the maximum storage capacity of the reservoir and draw the highest water level line. Some netizens questioned whether it would be unnecessary to open nine holes if the flood discharge was earlier. If it had been earlier, wouldn't the college entrance examination in Shexian County, Anhui Province have been affected?

Interview description

Kunyang, deputy director of the Flood Control and Disaster Reduction Center of the Ministry of Water Resources, explained in an exclusive interview with Voice of China that reservoirs and hydropower stations with flood control tasks should be implemented in strict accordance with the approved dispatching plan and flood control plan during the flood season. This plan is made according to relevant data and flood season trend. The accuracy of hydrological forecast data is related to the accuracy of weather forecast.

Therefore, real-time and accurate dispatching is very difficult, and reservoir flood discharge dispatching is also complicated, so there is no need for sudden decision-making, leaving enough transfer time for downstream people. There is no necessary relationship between flood discharge of upstream reservoir and flood discharge of downstream reservoir, and there is no causal relationship between whether Xin 'anjiang reservoir discharges flood and whether it affects Shexian college entrance examination.