Impact of Interactions between Different Rainfall Patterns and River Water Levels on Urban Flooding in Inland Plain Cities

Jian Chen (), Yaowei Li (), Luyao Zhang () and Yangyang Tian ()
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Jian Chen: North China University of Water Resources and Electric Power, School of Water Conservancy
Yaowei Li: North China University of Water Resources and Electric Power, School of Water Conservancy
Luyao Zhang: North China University of Water Resources and Electric Power, School of Water Conservancy
Yangyang Tian: North China University of Water Resources and Electric Power, School of Water Conservancy

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2025, vol. 39, issue 14, No 8, 7515-7539

Abstract: Abstract In recent years, urban flooding caused by heavy rainfall events has become increasingly common, severely impacting urban operations and residents' daily lives. Most urban stormwater is discharged into rivers through drainage networks or pumped into rivers by pumping stations. However, when river water levels are excessively high, they can backflow into drainage networks, impeding discharge and worsening flooding. Thus, understanding the outflow capacity of drainage networks and surface inundation under the combined effects of rainfall and high river water levels is crucial for mitigating urban flooding. This study is focused on the Wachong River drainage area in Zhoukou city, and the MIKE FLOOD platform is employed to develop a coupled model of rivers, drainage networks, and surface flooding. The results indicate that the drainage capacity of the pipeline system exhibits a lag effect: the higher the rainfall intensity and the later the rainfall peak (r = 0.75) are, the shorter the lag time. For rainfall events with the same return period, an earlier rainfall peak (r = 0.25) leads to a greater total volume of surface water under flooded pipeline conditions and a greater risk of inundation. The findings of this research provide a scientific basis and guidance for improving the emergency response capacity of urban drainage systems and reducing urban flood risk.

Keywords: Rainfall; River Water Level; Interaction; Urban Flooding (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11269-025-04306-3

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