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Using volunteered geographic information data for flood mapping – Wadi Deffa El Bayadh Algeria

Otmani, Azzedine / Hazzab, Abdelkrim / Atallah, M’hamed / Apollonio, Ciro / Petroselli, Andrea

This study presents a coupled application of hydrological and hydraulic models to reconstruct a flash flood event of the ungauged watercourse of Wadi Deffa, Algeria. The objective is to compare the performances of three hydrological models (rational method, EBA4SUB, HEC-HMS) and two hydraulic bidimensional models (HEC-RAS 2D, FLO-2D) by using the Volunteered Geographic Information (VGI) data. The comparison between the observed and simulated flood areas showed satisfactorily performance of the EBA4SUB-FLO-2D approach compared to the other approaches. The analysis of the observed and simulated flood depths showed a good estimate using the approaches EBA4SUB-FLO-2D and EBA4SUB-HEC-RAS 2D. The best estimate of the two flood depth approaches is attributed to the hydrological model EBA4SUB in estimating the peak flow. The results demonstrate that the EBA4SUB-FLO-2D modeling approach can provide reliable data for the management of flood risks in the ungauged watersheds of the southwest region of Algeria.

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Using volunteered geographic information data for flood mapping – Wadi Deffa El Bayadh Algeria

Otmani, Azzedine / Hazzab, Abdelkrim / Atallah, M’hamed / Apollonio, Ciro / Petroselli, Andrea

This study presents a coupled application of hydrological and hydraulic models to reconstruct a flash flood event of the ungauged watercourse of Wadi Deffa, Algeria. The objective is to compare the performances of three hydrological models (rational method, EBA4SUB, HEC-HMS) and two hydraulic bidimensional models (HEC-RAS 2D, FLO-2D) by using the Volunteered Geographic Information (VGI) data. The comparison between the observed and simulated flood areas showed satisfactorily performance of the EBA4SUB-FLO-2D approach compared to the other approaches. The analysis of the observed and simulated flood depths showed a good estimate using the approaches EBA4SUB-FLO-2D and EBA4SUB-HEC-RAS 2D. The best estimate of the two flood depth approaches is attributed to the hydrological model EBA4SUB in estimating the peak flow. The results demonstrate that the EBA4SUB-FLO-2D modeling approach can provide reliable data for the management of flood risks in the ungauged watersheds of the southwest region of Algeria.

Using volunteered geographic information data for flood mapping – Wadi Deffa El Bayadh Algeria

Otmani, Azzedine / Hazzab, Abdelkrim / Atallah, M’hamed / Apollonio, Ciro / Petroselli, Andrea

This study presents a coupled application of hydrological and hydraulic models to reconstruct a flash flood event of the ungauged watercourse of Wadi Deffa, Algeria. The objective is to compare the performances of three hydrological models (rational method, EBA4SUB, HEC-HMS) and two hydraulic bidimensional models (HEC-RAS 2D, FLO-2D) by using the Volunteered Geographic Information (VGI) data. The comparison between the observed and simulated flood areas showed satisfactorily performance of the EBA4SUB-FLO-2D approach compared to the other approaches. The analysis of the observed and simulated flood depths showed a good estimate using the approaches EBA4SUB-FLO-2D and EBA4SUB-HEC-RAS 2D. The best estimate of the two flood depth approaches is attributed to the hydrological model EBA4SUB in estimating the peak flow. The results demonstrate that the EBA4SUB-FLO-2D modeling approach can provide reliable data for the management of flood risks in the ungauged watersheds of the southwest region of Algeria.

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Title:

Using volunteered geographic information data for flood mapping – Wadi Deffa El Bayadh Algeria

Contributors:

Otmani, Azzedine (author) / Hazzab, Abdelkrim (author) / Atallah, M’hamed (author) / Apollonio, Ciro (author) / Petroselli, Andrea (author)

Published in:

Journal of Applied Water Engineering and Research ; 11 ; 464-480

Publication date:

2023-10-02

Size:

17 pages

ISSN:

DOI:

https://doi.org/10.1080/23249676.2022.2155716

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

Hydrological modeling , hydraulic modeling , flood mapping , EBA4SUB , FLO2D , HEC-RAS 2D , ungauged basin

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