At 8 o'clock on October 31, the Three Gorges Reservoir was stored to a normal storage level of 175 meters, which was also the first time that the Three Gorges Reservoir was stored to 175 meters after the overall completion and acceptance of the Three Gorges Reservoir in 2020 and turned into a normal operating period, laying a good foundation for effectively exerting the comprehensive benefits of water supply, power generation, shipping and ecology this winter and next spring. Since 2010, the Three Gorges Reservoir has completed the task of 175 meters full storage for 12 consecutive years.
In the summer of 2021, there is less water in the upper reaches of the Yangtze River, but the autumn rains in western China cause heavier autumn floods, and the water is more and later than in previous years, and the No. 1 numbered flood occurs in the main stream of the Yangtze River, the Number 2 numbered floods occur in the Jialing River, and some tributaries have super-alert floods. The Ministry of Water Resources and the Yangtze River Water Conservancy Commission coordinate the needs of flood prevention, water storage, power generation, shipping, etc., strengthen forecasting and forecasting, conduct rolling consultations and judgments, optimize the real-time dispatch plan of the Three Gorges Reservoir on a daily basis, and cooperate and cooperate closely with relevant power grid companies, shipping departments, power generation enterprises and relevant localities, effectively taking into account the needs of all parties, and achieving win-win goals such as flood prevention, water storage, and power generation.
From September 10 to the end of October, the average discharge flow of the Three Gorges Reservoir began to store water, and from September 10 to the end of October, the average discharge flow was about 21,700 cubic meters per second, setting a new high during the annual water storage period, providing a strong guarantee for the autumn water use in the middle and lower reaches of the Yangtze River. Under the premise of ensuring flood prevention safety, the Ministry of Water Resources comprehensively considered the overall water storage situation of the reservoir group in the upper reaches of the Yangtze River at the end of the flood and the power supply needs of the power grid, strengthened communication and consultation with the State Grid and the Southern Power Grid, issued dispatch opinions 6 times, and steadily promoted the phased storage of water in the upper reaches of the Yangtze River reservoir group, and the main control reservoirs basically achieved the goal of full storage. As of October 31, 27 upstream controlled reservoirs included in the joint dispatch had stored 58.8 billion cubic meters of water above the dead water level, the highest in the calendar year, providing a reliable water supply guarantee for the dry period this winter and next spring. (Reporter Zhao Ran)