水利部根据24小时降雨预报，向河北、山西、内蒙古、吉林、黑龙江、山东、河南、湖北、广东、广西、海南、重庆、四川、云南、陕西、甘肃、青海等17个省份发出靶向预警[1]。预警通报了强降雨覆盖范围、水库和山洪灾害风险区域等情况[1]。
7月28日8时至29日8时期间，5条河流发生超警以上洪水，最大超警幅度0.41米[1]。其中，甘肃党河发生1965年有实测资料以来最大洪水[1]。
水利部于7月29日18时针对四川省启动洪水防御Ⅳ级应急响应[1]，要求做好防洪工程调度和人员转移工作[1]。预报期为7月30日至8月3日[1]。
The Ministry of Water Resources has issued targeted flood warnings to 17 provinces based on 24-hour rainfall forecasts, notifying them of heavy rainfall coverage areas and risks to reservoirs and mountainous regions prone to flash floods [1]. The alert covers Hebei, Shanxi, Inner Mongolia, Jilin, Heilongjiang, Shandong, Henan, Hubei, Guangdong, Guangxi, Hainan, Chongqing, Sichuan, Yunnan, Shaanxi, Gansu, and Qinghai [1].
During the period from July 28 at 8 a.m. to July 29 at 8 a.m., five rivers experienced floods exceeding warning levels, with the maximum water level rise measuring 0.41 meters above the warning threshold [1]. Among these, the Dang River in Gansu Province recorded its largest flood since 1965, when systematic water measurement data began [1]. The forecast period for continued heavy rainfall extends from July 30 through August 3 [1].
In response to the flooding threat, the Ministry of Water Resources initiated a Level IV emergency response for flood control in Sichuan Province on July 29 at 6 p.m. [1], requiring authorities to conduct reservoir discharge operations and implement personnel evacuation procedures [1].