Fu et al. (2025) Reconstruction of the July 12, 2022, flash flood event in Southwest China: integrating emergency management analysis with hydrological modeling

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Geomatics Natural Hazards and Risk
• Year: 2025
• Date: 2025-12-11
• Authors: Xiaoran Fu, Zhonggen Wang, Hongquan Sun, Shanzhong Qi, Jiahong Liu, Pingping Sun, Liaofeng Liang, Renzhi Li
• DOI: 10.1080/19475705.2025.2600529

Research Groups

Not explicitly mentioned in the provided text.

Short Summary

This study reconstructs the July 12, 2022 flash flood in China's Heishui River watershed using field investigations and hydrological–hydrodynamic simulations, identifying heavy rainfall and human factors as causes, and demonstrating the value of post-disaster data for modeling ungauged basins.

Objective

• To reconstruct the flash flood process and response behaviors of the July 12, 2022 event in the Heishui River watershed using disaster site investigations and hydrological–hydrodynamic simulations.
• To identify direct and indirect causes of the flood and apply lessons learned to inform prevention, mitigation, and emergency strategies, particularly for ungauged watersheds.

Study Configuration

• Spatial Scale: Heishui River watershed, Pingwu County, Sichuan Province, southwestern China.
• Temporal Scale: The flash flood event occurred on July 12, 2022. The study is a post-disaster analysis of this specific event.

Methodology and Data

• Models used: Hydrological–hydrodynamic simulations.
• Data sources: Disaster site investigations, historical flood mark data.

Main Results

• The direct cause of the flash flood was heavy rainfall in the upstream watershed.
• Indirect causes included built-up areas in the downstream estuary floodplain, limited flood risk perception, and inadequate early warning capabilities in mountainous regions, leading to slow emergency responses.
• Post-disaster field investigations and historical flood mark data provide reliable validation for reproducing flood processes and informing prevention strategies, particularly addressing modeling challenges in ungauged watersheds.

Contributions

• Provides a detailed case study of a devastating flash flood, offering insights into its complex causes (natural and anthropogenic).
• Demonstrates a practical approach for flash flood modeling and validation in ungauged watersheds by leveraging post-disaster field investigations and historical flood mark data.
• Informs prevention, mitigation, and emergency strategies by applying lessons from a typical flood event.

Funding

Not explicitly mentioned in the provided text.

Citation

@article{Fu2025Reconstruction,
  author = {Fu, Xiaoran and Wang, Zhonggen and Sun, Hongquan and Qi, Shanzhong and Liu, Jiahong and Sun, Pingping and Liang, Liaofeng and Li, Renzhi},
  title = {Reconstruction of the July 12, 2022, flash flood event in Southwest China: integrating emergency management analysis with hydrological modeling},
  journal = {Geomatics Natural Hazards and Risk},
  year = {2025},
  doi = {10.1080/19475705.2025.2600529},
  url = {https://doi.org/10.1080/19475705.2025.2600529}
}