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1870年7月上、中旬在长江上游发生了连续性暴雨,其中7月13～19日在川东嘉陵江地区和干流重庆～宜昌区间的特大暴雨,及由此产生的洪水为历史上所罕见。根据实地调查及文献的考证,1870年洪水是自1153年以来的一次特大洪水。宜昌洪峰流量达110000秒立米,卅天洪量大约在1767～1852亿立米间。这次暴雨历时长,面积广,强度大,造成长江上中游大范围严重的洪水灾害。为了弄清这场特大洪水的暴雨概况及其成因,在缺乏实测降雨记录和历史天气资料情况下,根据故宫奏折、县府州志书、采访录、水利史藉,历代史料实录及有关流域规划报告共约80余种篇目,200多卷册,
In July and July 1870, a series of heavy rainstorms occurred in the upper and middle reaches of the Yangtze River. Among them, torrential rains between July 13 and July 19 in the Jialing River area of eastern Sichuan and between Chongqing and Yichang in the mainstream, and the resulting floods, were rare in history. According to field investigation and literature research, the 1870 flood was a special flood since 1153. Yichang Hong peak flow rate of 110000 seconds of legislation, Tian Hong days about 1767 ~ 1852 billion cubic meters. The torrential rain lasted a long time, its area was wide and its intensity was very high, causing a large-scale flood disaster in the upper and middle reaches of the Yangtze River. In order to find out the general situation and cause of heavy rain in this extraordinary flood, in the absence of observed rainfall records and historical weather data, according to the Forbidden City memorials, prefectural state records, interviews, water conservancy history, historical records and relevant watershed planning The report a total of about 80 titles, more than 200 volumes,