Articles | Volume 26, issue 11
https://doi.org/10.5194/nhess-26-5421-2026
https://doi.org/10.5194/nhess-26-5421-2026
Research article
 | 
30 Oct 2026
Research article |  | 30 Oct 2026

Multi-data source based quantifying urban flood severity in major Chinese cities (2000–2024) using a hybrid machine-learning weighting framework

Guoqiang Peng, Yujing Sun, Mao Wang, Min Chen, and Fengyuan Zhang

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Cited articles

Ahmad, I., Ping, W., Ullah, S., Faqeih, K. Y., Alamri, S. M., Alamery, E. R., Abalkhail, A. A. A., and Bilal Jan, H. M.: Spatiotemporal Mapping of Urban Flood Susceptibility: A Multi-Criteria GIS-Based Assessment in Nangarhar, Afghanistan, Land, 14, 2376, https://doi.org/10.3390/land14122376, 2025. 
Ali, Y., Afnan, J., Jannat, M., and Uddin, M. M.: Assessing alteration of urban floodplains using remote sensing and GIS: a three decade analysis (1992–2022), Geol. Ecol. Landsc., 1–16, https://doi.org/10.1080/24749508.2025.2524209, 2025. 
Bagheri, A. and Liu, G.-J.: Climate change and urban flooding: assessing remote sensing data and flood modeling techniques: a comprehensive review, Environ. Rev., 33, 1–14, https://doi.org/10.1139/er-2024-0065, 2025. 
Ban, J., Sutton, C., Ma, Y. Lin, C., and Chen, K.: Association of flooding exposure with cause-specific mortality in North Carolina, United States, Nat. Water, 1, 1027–1034, https://doi.org/10.1038/s44221-023-00167-5, 2023. 
Bhusal, A., Thakur, B., Kalra, A., Benjankar, R., and Shrestha, A.: Evaluating the Effectiveness of Best Management Practices in Adapting the Impacts of Climate Change-Induced Urban Flooding, Atmosphere, 15, 281, https://doi.org/10.3390/atmos15030281, 2024. 
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This study combines official records, news reports, social media posts, and search data to track urban flood events in twenty major Chinese cities from 2000 to 2024. It builds a comparable database and uses an interpretable machine learning framework to measure flood severity across cities and years. Results show a clear north south contrast: southern river and coastal cities face frequent severe floods, while northern cities usually face lower risk but suffer sudden extremes during rare storms.
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