In an extreme case, the discharge function of the sewer network was even temporarily lost because of flooding of the distributaries of the Huangpu River. However, the rain water storage capacity has decreased dramatically and the rain water discharge capacity has become limited during this period. Within the last three decades, the number of local torrential rainfall events and short-duration torrential rains has increased annually. The pluvial flooding prevention capacity in Shanghai is controlled by rain water storage and discharge capacity, which is associated with the sewer network, pumping stations and its sluice and pumping gates. The influence factors contributing to pluvial flooding are evaluated, and recommendations for protective measures are presented. In this study, data from fifty-four pluvial flooding events between 20 were collected and analysed. Climatically, Shanghai is in the East Asia monsoon area and frequently experiences torrential rains. Geologically, Shanghai is sensitive to flooding hazards due to low-lying ground caused by land subsidence. Investigation into pluvial flooding hazards caused by heavy rain and protection measures in Shanghai, China Investigation into pluvial flooding hazards caused by heavy rain and protection measures in.ĭeng, Jian-Liang Shen, Shui-Long Xu, Ye-Shuangįlooding hazards caused by heavy rainfall in Shanghai have been reported extensively in the last 15 years.
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