China News Service, Wuhan, August 17 (Reporter Xu Jinbo) The Hydrographic Bureau of the Yangtze River Water Resources Commission officially announced at 14:00 on the 17th that the "Flood No. 5 of 2020 on the Yangtze River" was formed in the upper reaches of the Yangtze River. It is estimated that the maximum inflow of the Three Gorges Reservoir will be around 70,000 cubic meters per second, which will form the largest inflow during the flood season this year.
Data map: The water level of the Yangtze River rises, and the pedestrian trails along the river are flooded. Photo by China News Agency reporter Chen Chao
According to the relevant person in charge of the Yangtze River Water Conservancy Commission, the tributaries of the Minjiang, Tuojiang, and Jialingjiang Rivers in the upper reaches of the Yangtze River have recently experienced large-scale heavy rainfall and over-alarm floods, and over-protection floods have occurred in Fujiang. The flow of the upstream main stream Cuntan Station rose to 50,400 cubic meters per second at 14:00 on the 17th. According to the "Regulations on Flood Numbering of Major Rivers in the Country", it reached the flood numbering standard. The Hydrological Bureau of the Yangtze River Water Conservancy Commission issued an announcement: "Yangtze River 2020 No. 5 Flood" formed in the upper reaches of the Yangtze River.
The "Yangtze River 2020 No. 4 Flood" that formed upstream on August 14 has now steadily passed through the Three Gorges reservoir area. In response to the No. 4 flood of the Yangtze River this year, the Yangtze River Water Conservancy Commission insisted on rolling consultations in the morning and evening in accordance with the requirements of the third-level emergency response for flood and drought disaster prevention, issued multiple flood warnings, and successively issued three dispatch orders for scientific control The discharge flow of the Three Gorges Reservoir has effectively reduced the flood control pressure in the middle and lower reaches, and the peak cut rate of the Three Gorges Reservoir has reached 33%.
In view of the short interval between the No. 5 flood and No. 4 flood of the Yangtze River this year, and the large peak height, the inflow of the Three Gorges reservoir may reach 70,000 cubic meters per second, forming the largest inflow during the flood season this year. The Yangtze River Water Conservancy Commission will discuss and decide to dispatch The Jinping I and Ertan Reservoir will reduce the outflow flow from 8 o'clock on the 18th, and the combined use of the first two reservoirs to intercept 500 million cubic meters of water at 8 o'clock on the 21st; dispatch Xiangjiaba Reservoir to reduce the outflow flow from 8 o'clock on the 17th As small as 8,500 cubic meters per second leaked, and the outgoing flow from the reservoir was further reduced to 6,300 cubic meters per second from 20:00 on the 17th. During the dispatch period, the Xiluodu Reservoir camera cooperated; coordinated and guided Sichuan and Chongqing to jointly dispatch Baozhu Temple and Tingzikou Reservoirs such as, Caojie and other reservoirs have realized the staggered peaks of floods in the main stream of Jialing River and the flood peaks of the tributary Fujian River, and lowered the flood peak water level of the downstream Chongqing Hechuan District.
At the same time, an emergency notice was issued to the water conservancy departments (bureaus) of Sichuan, Chongqing, Hubei and other provinces (cities), requesting the relevant water conservancy departments (bureaus) to overcome paralyzing thoughts, fluke psychology, and fatigue and war-weariness, and continue to tighten and compact flood prevention responsibilities . We will further strengthen the monitoring and forecasting of water and rain conditions, do a good job in the prevention of mountain torrents and floods in small and medium-sized rivers, strengthen the safety of reservoirs during floods, strengthen the investigation of potential safety hazards in flood control projects, and strictly implement the 24-hour emergency guard and leadership-led shift system. (Finish)