Study on the Relationship Between Rainfall and Waterlogging Thresholds in Jinwan District,Zhuhai City
WANG Chao
TONG Zhiming
CAI Bing
YANG Liu
Abstract：To enhance the waterlogging disaster prevention capacity and improve the urban drainage warning system in Jinwan District,Zhuhai City,this study analyzed waterlogging incidents and rainfall obser-vation data from 2023 using correlation analysis,linear regression analysis,and probability density statistics.The relationship between rainfall and waterlogging was investigated by examining waterlogging data and rain-fall amounts at different time scales.The results indicate that rainfall at different time scales affects waterlog-ging to varying degrees,with the 3-hour rainfall having the most significant impact.Thresholds for water-logging initiation at various locations were determined:waterlogging begins when the 1-hour rainfall intensi-ty reaches 20 mm,the 2-hour intensity reaches 35 mm,and the 3-hour intensity reaches 45 mm.The risk of severe waterlogging increases significantly when the 1-hour rainfall intensity reaches 35 mm,the 2-hour intensity reaches 40 mm,and the 3-hour intensity reaches 60 mm.
Keywords：climatologyrainfallwaterloggingthresholdJinwan DistrictZhuhai City
Publication Date：2025-10-20
Online Publishing Date：2025-10-30(First online date of this platform, not the publication date of the document)
Pages：4( 38-41 )