Abstract
The intensification of global climate change, the increase in extreme weather, and the frequent occurrence of heavy rains have led to frequent flash flood disasters. The flash floods] is fast, the time of convergence is short, and the destructive power is strong, making it difficult to predict prevention, which poses a huge threat to the lives and property of the people living in the hilly areas. Therefore, it is extremely urgent to carry out flash flood disaster prevention and early warning. Taking the three natural villages in Luoning County of Henan Province as an example, we carried out the determination of early warning period of flash flood disaster and calculation of early warning index. The research results can provide scientific support for local flash flood disaster warning work and reduce the loss of people and property caused by flash flood disasters.
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