China News Service, Zhengzhou, August 20 (Reporter Dong Fei) The Yellow River Water Conservancy Commission of the Ministry of Water Resources of China issued a message on the 20th that, in response to the current flood conditions, a level IV emergency response to flood and drought disaster prevention in the middle and lower reaches of the Yellow River was initiated.
According to the Yellow River Conservancy Commission's forecasts from the hydrological department, the continuously evolving Yellow River No. 5 flood will reach 6,600 cubic meters per second at the Tongguan Hydrological Station around 10 o'clock on the 21st, which is the largest flood at the station since 1996.
Taking into account the rain and flood conditions in the upper, middle and lower reaches, the Yellow River Conservancy Commission will implement joint water and sediment dispatching in the middle and lower reaches of the Yellow River from 12:00 on the 20th. The Xiaolangdi Reservoir will control the discharge at 4000 cubic meters per second, and the Sanmenxia Reservoir will continue to run open and start the middle and lower reaches of the Yellow River simultaneously. Level IV emergency response for flood and drought disaster prevention.
In order to fully respond to the continuous development of the No. 5 flood, the Yellow River Water Conservancy Commission decided to implement combined water and sediment dispatch in the middle and lower reaches of the comprehensive needs of flood arresting peak cutting, reservoir sand discharge, river erosion and sedimentation. Starting from 12:00 on the 20th, the Xiaolangdi Reservoir will be dispatched to open. 3 sand drainage holes and 1 orifice hole will be discharged evenly at 4000 cubic meters per second, and the discharge process shall not be less than 6 days.
According to experts from the Yellow River Water Conservancy Commission, the upstream of the Yellow River in this year's flood season is obviously too much water. The Longyangxia and Liujiaxia Reservoirs have been operating at high water levels. In addition, various aspects predict that the Yellow River is more likely to have autumn rains this year. Therefore, to pre-plan the overall flood control needs of the river basin in the next step, the discharge volume of Dalangdi Reservoir must be increased in a timely manner. (Finish)