水利部：“七下八上” 暴雨洪水极端性强致灾性高

Summary of Key Points Core Viewpoint - The "Seven Down, Eight Up" flood prevention critical period has recently concluded, with significant rainfall and flooding events occurring across China, characterized by extreme conditions and high disaster potential [1][2]. Group 1: Flood Events - During the "Seven Down, Eight Up" period, a total of 330 rivers experienced floods exceeding warning levels, with 77 rivers surpassing guaranteed water levels, and 22 rivers recorded the highest floods since measurement began [1]. - The northern regions of China, particularly the Haihe River basin, experienced severe flooding, with 18 rivers recording floods that exceeded historical measurement records, accounting for over 80% of the total historical floods nationwide [2]. Group 2: Regional Disparities - The overall flood situation is characterized by a regional disparity, with northern areas experiencing more severe conditions compared to southern regions [2]. - In contrast, areas such as the Huanghuai and Jianghuai regions faced high temperatures and low rainfall, leading to drought conditions primarily affecting five provinces: Anhui, Henan, Shandong, Hubei, and Shaanxi [2]. Group 3: Weather Patterns - The rainfall patterns have shown strong intensity but weak coverage, with frequent typhoons impacting a wide area, leading to rapid increases in flood levels [3].