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New perspectives on urban stormwater management in China, with a focus on extreme rainfall events

Author

Listed:
  • Pengjun Li

    (Wuhan University)

  • Luwen Zhuang

    (Sun Yat-Sen University)

  • Kairong Lin

    (Sun Yat-Sen University)

  • Dunxian She

    (Wuhan University)

  • Qiuling Chen

    (Pearl River Water Resources Research Institute)

  • Qiang Wang

    (Sun Yat-Sen University
    Pearl River Water Resources Research Institute)

  • Jun Xia

    (Wuhan University
    Chinese Academy of Sciences)

Abstract

Climate change, especially the rise in extreme rainfall events, combined with urbanization, poses significant challenges to traditional hydrological methodologies. These developments call for researchers to reassess conventional analytical and numerical approaches and make the necessary adjustments to address these evolving conditions. In this study, we begin by analyzing the patterns and mechanisms of the extreme rainfall event in Zhengzhou on July 20, 2021 (“7.20” extreme rainfall in Zhengzhou). Building on this analysis, we offer insights and propose solutions to key issues in urban stormwater management. A bibliometric analysis of the Zhengzhou event indicates that urban flooding is primarily driven by climate change, with urbanization being a secondary factor. Additionally, the integration of machine learning with traditional numerical hydrological models, such as the widely used SWMM model, has emerged as a research trend to enhance the accuracy and comprehensiveness of parameter estimation. New urban stormwater management techniques and strategies are essential for improving urban flooding resilience, including a three-level collaborative governance system, urban green-gray-blue facilities, smart integrated management, and digital twin technologies. Furthermore, fully coupled water management models and strategies that incorporate all elements of hydrological cycles are essential for addressing complex urban hydrological challenges.

Suggested Citation

  • Pengjun Li & Luwen Zhuang & Kairong Lin & Dunxian She & Qiuling Chen & Qiang Wang & Jun Xia, 2025. "New perspectives on urban stormwater management in China, with a focus on extreme rainfall events," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 121(4), pages 3745-3774, March.
    • Handle: RePEc:spr:nathaz:v:121:y:2025:i:4:d:10.1007_s11069-024-06994-3
    DOI: 10.1007/s11069-024-06994-3
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    References listed on IDEAS

    as
    1. Pawan Kumar Chaubey & Rajesh Kumar Mall & Prashant K. Srivastava, 2023. "Changes in Extremes Rainfall Events in Present and Future Climate Scenarios over the Teesta River Basin, India," Sustainability, MDPI, vol. 15(5), pages 1-19, March.
    2. Chengshuai Liu & Caihong Hu & Chenchen Zhao & Yue Sun & Tianning Xie & Huiliang Wang, 2024. "Research on Urban Storm Flood Simulation by Coupling K-means Machine Learning Algorithm and GIS Spatial Analysis Technology into SWMM Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 38(6), pages 2059-2078, April.
    3. Daifeng Xiang & Gangsheng Wang & Jing Tian & Wanyu Li, 2023. "Global patterns and edaphic-climatic controls of soil carbon decomposition kinetics predicted from incubation experiments," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    4. Long Yang & Yixin Yang & Ye Shen & Jiachuan Yang & Guang Zheng & James Smith & Dev Niyogi, 2024. "Urban development pattern’s influence on extreme rainfall occurrences," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    5. Hao Yang & Linshuang Zhao & Jun Chen, 2022. "Metro System Inundation in Zhengzhou, Henan Province, China," Sustainability, MDPI, vol. 14(15), pages 1-15, July.
    6. Cheng He & Ho Kim & Masahiro Hashizume & Whanhee Lee & Yasushi Honda & Satbyul Estella Kim & Yue Leon Guo & Alexandra Schneider & Yixiang Zhu & Lu Zhou & Renjie Chen & Haidong Kan, 2024. "The overlooked health impacts of extreme rainfall exposure in 30 East Asian cities," Nature Sustainability, Nature, vol. 7(4), pages 423-431, April.
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