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Open AccessArticle

A New Flash Flood Warning Scheme Based on Hydrodynamic Modelling

1
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
2
Changjiang River Scientific Research Institute, Wuhan 430010, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(6), 1221; https://doi.org/10.3390/w11061221
Received: 29 April 2019 / Revised: 6 June 2019 / Accepted: 10 June 2019 / Published: 11 June 2019
(This article belongs to the Special Issue Future Challenges in Flood Defence Design and Management)
Flash flooding is one of the most severe natural hazards and commonly occurs in mountainous and hilly areas. Due to the rapid onset of flash floods, early warnings are critical for disaster mitigation and adaptation. In this paper, a flash flood warning scheme is proposed based on hydrodynamic modelling and critical rainfall. Hydrodynamic modelling considers different rainfall and initial soil moisture conditions. The critical rainfall is calculated from the critical hazard, which is based on the flood flow depth and velocity. After the critical rainfall is calculated for each cell in the catchment, a critical rainfall database is built for flash flood warning. Finally, a case study is presented to show the operating procedure of the new flash flood warning scheme. View Full-Text
Keywords: flash flood warning; hydrodynamic modelling; critical rainfall; hazard index flash flood warning; hydrodynamic modelling; critical rainfall; hazard index
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MDPI and ACS Style

Huang, W.; Cao, Z.; Huang, M.; Duan, W.; Ni, Y.; Yang, W. A New Flash Flood Warning Scheme Based on Hydrodynamic Modelling. Water 2019, 11, 1221.

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