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随着长江干流九江、湖口站分别于7月31日14时和23时退出警戒水位,至此,长江中下游干流监利至大通河段全线降至警戒水位以下。受超强厄尔尼诺现象影响,今年长江流域发生了31次降雨过程。特别是6月30日以来,长江中下游地区发生持续性强降雨,降水总量多、暴雨强度大、超警河流多、超警时间久、防守压力大,今年的长江颇不平静。据统计,2号洪峰期间,长江中下游发生1999年以来最大洪水,监利以下江段及两湖全面超警,各控制站洪峰水位列有实测记录以来第4~10
As the mainstream of the Yangtze River, Jiujiang and Hukou Station departed from the warning water level at 14:00 and 2300 hours on July 31, respectively, the entire river from Jianli to Datong reach of the middle and lower reaches of the Yangtze River has dropped below the warning level. Affected by the super-El Niño phenomenon, 31 rainfall events occurred in the Yangtze River basin this year. Especially since June 30, there has been heavy rainfall in the middle and lower reaches of the Yangtze River, with a large amount of rainfall, heavy rainfall intensity, many rivers and lakes, and a large number of police and defensive pressure. This year the Yangtze River is rather calm. According to statistics, during the peak period of No. 2, the largest flood occurred in the middle and lower reaches of the Yangtze River since 1999, the following sections of Jianli and the two lakes were fully over-alerted, and the peak water levels at all control stations included the first 4 to 10