Flash floods caused by extreme rainstorms in small river basins are small-scale events in both time and space.The existing hydro-meteorological observation and forecasting and early warning technologies still have great technical difficulties and uncertainties in the monitoring and early warning of torrential rain flash floods.The complex topography and geology of some small river basins in Zhejiang province suffer from short-duration heavy rainfall,which is easy to lead to the occurrence of mountain flood geological disasters,and the mountain flood disaster on July 22 of 2023 in Fuyang District is one of them.Through the comprehensive investigation and review of the emergency,the author analyzed the process of"Four Pre",analyzed the causes of the disaster,and put forward the main ideas,countermeasures and suggestions to improve the emergency management of mountain flood in small watershed.
关键词
小流域山洪/预报预警/"四预"检视/教训启示
Key words
small watershed mountain flood/forecasting and early warning/"Four Pre"review/lesson and enlightenment
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