黄河2025年伏秋大汛平稳结束 应对94站次超警洪水

Core Insights - The Yellow River's flood and drought management during the 2025 flood season has been successfully concluded, with the ability to handle 94 instances of flood warnings [1] - The flood season exhibited significant variability, with a notable drought from March to June followed by intense rainfall in July and August, and a marked increase in autumn rainfall in September and October [1] - The Yellow River Water Resources Commission (YRWC) implemented a coordinated operation of 55 water projects to manage floodwaters effectively, achieving a peak flow reduction from 6,900 cubic meters per second to 2,670 cubic meters per second, a reduction rate of 61.3% [1] Flood and Drought Management - The YRWC reported that 48 rivers experienced floods exceeding warning levels, with some tributaries recording the highest floods since data collection began [1] - A rare occurrence was noted on October 12, when the first flood of 2025 was recorded at the Tongguan hydrological station, marking the latest occurrence of a numbered flood since 1964 [1] Water Resource Management - The YRWC executed pre-flood and flood period water and sediment management, with the Sanmenxia Reservoir discharging 335 million tons of sediment and the Xiaolangdi Reservoir discharging 222 million tons [2] - A total of 624 million cubic meters of water was diverted to combat drought in the lower Yellow River, along with 15 million cubic meters for ecological replenishment in the Yellow River Delta [2] - The coordinated sediment discharge from key reservoirs in the upper and middle Yellow River reached a historical high of 130 million tons [2]