1931年大洪水．1931年7月，长江流域降雨量超过常年同期雨量的一倍以上，致使江湖洪水盈满，8月长江上游金沙江、岷江、嘉陵江均发生大水，上下游洪水相遇造成全流域大水．宜昌站最大洪峰流量64600m3／s，汉口站最高水位28．28m，使沿江堤防多处渍决，洪灾遍及四川、湖北、湖南 1931 floods. In July 1931, the rainfall in the Yangtze River Basin more than doubled that of the same period of the previous year, resulting in a flood full of rivers and lakes. In August, floods occurred in the Jinsha River, Minjiang River and Jialing River of the upper reaches of the Yangtze River. Yichang station maximum peak flow of 64600m3 / s, Hankou station maximum water level of 28.28m, so that a number of stains along the dike, flooding throughout Sichuan, Hubei, Hunan