<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Flash floods are highly variable phenomena in both time and space. Therefore, tools with the potential to provide early warning are needed to analyse them. In Europe, flash floods often occur on small catchments; it has already been shown that the spatial variability of rainfall has a great impact on the catchment response. The aim of this paper is to use a coupled hydrological-hydraulic model (MIKE SHE/MIKE 11) to determine the rainfall thresholds and transformation coefficients from hourly rain to other durations, which will lead to flooding of the inhabited areas to the ungauged Ungureni catchment. The model was calibrated and validated using a reference discharge previously obtained by UTCB at the downstream gauge section of Teleorman River (Tatarastii de Sus) using MIKE 11 UHM module. Once the rainfall thresholds are determined, they can be used in flood forecasting and issuing warning with lead time for the inhabitants of the two villages located in Ungureni watershed. The method proposed in this paper can be used for other watersheds prone to flooding, so warnings can be issued with lead time.</p></abstract>

Flash floods are highly variable phenomena in both time and space. Therefore, tools with the potential to provide early warning are needed to analyse them. In Europe, flash floods often occur on small catchments; it has already been shown that the spatial variability of rainfall has a great impact on the catchment response. The aim of this paper is to use a coupled hydrological-hydraulic model (MIKE SHE/MIKE 11) to determine the rainfall thresholds and transformation coefficients from hourly rain to other durations, which will lead to flooding of the inhabited areas to the ungauged Ungureni catchment. The model was calibrated and validated using a reference discharge previously obtained by UTCB at the downstream gauge section of Teleorman River (Tatarastii de Sus) using MIKE 11 UHM module. Once the rainfall thresholds are determined, they can be used in flood forecasting and issuing warning with lead time for the inhabitants of the two villages located in Ungureni watershed. The method proposed in this paper can be used for other watersheds prone to flooding, so warnings can be issued with lead time.

Deriving Rain Threshold for Early Warning Based on a Coupled Hydrological-Hydraulic Model

PhD Student, Technical University of Civil Engineering.

Professor, PhD, Technical University of Civil Engineering

Modelling in Civil Environmental Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Flash floods are highly variable phenomena in both time and space. Therefore, tools with the potential to provide early warning are needed to analyse them. In...

Deriving Rain Threshold for Early Warning Based on a Coupled Hydrological-Hydraulic Model

Published Online: Jan 30, 2017

Page range: 10 - 21

DOI: https://doi.org/10.1515/mmce-2016-0014

Keywords
flash flood, MIKE SHE, MIKE 11, hydrological and hydraulic modelling

© 2016 Veronica Ivanescu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Deriving Rain Threshold for Early Warning Based on a Coupled Hydrological-Hydraulic Model

Published Online: Jan 30, 2017

Page range: 10 - 21

DOI: https://doi.org/10.1515/mmce-2016-0014

Keywordsflash flood, MIKE SHE, MIKE 11, hydrological and hydraulic modelling

© 2016 Veronica Ivanescu et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
flash flood, MIKE SHE, MIKE 11, hydrological and hydraulic modelling