Flood Vulnerability Mapping and Risk Assessment Using Hydraulic Modeling and GIS in Tamanrasset Valley Watershed, Algeria

• Autorzy: Madi Housseyn , Bedjaoui Ali , Elhoussaoui Abdelghani , Elbakai Lala Oulad , Bounaama Aya

Identyfikatory

DOI

10.12911/22998993/163252

• Języki publikacji: EN

Abstrakty

EN

The paper is focused on the integration of the US Army Corps of Engineers Hydrologic Engineering Center (HEC) models, particularly the HEC-RAS (River Analysis System) 1D hydraulic model, into a decision support system for predicting the effects of floods. The study was conducted in the Tamanrasset Valley watershed in Algeria, where the HEC-RAS model was used to calculate water flow profiles for various flood events that occurred downstream. The objective of the study was to generate flood maps for extreme river flood events in the area, which could help assessing the risk of flood vulnerability in the area study. The process involved using the HEC-RAS 1D model to simulate the water flow in the river, taking into account the various flow and boundary conditions. The results of the simulation were then exported and analyzed in GIS-based software, HEC-GeoRAS, to prepare the flood inundation maps. The flood maps were based on the water level at each cross-section, which was calculated using the water surface profiles generated by HEC-RAS. The study aimed to identify flood zones using a combination of HEC-GeoRAS and GIS. The HEC-GeoRAS extension was utilized in a GIS environment to determine flood zones associated with 10-year, 20-year, 50-year, and 100-year return periods. The results of the study confirmed the effectiveness of the integration of GIS and HEC-RAS and demonstrated the performance of the model. Based on these findings, the study recommends the application of this model in planning and management programs for both residential and agricultural areas, to ensure appropriate measures are taken for future flood defense.

Słowa kluczowe

EN

HEC-RAS; flood prediction; GIS; flood inundation map; flood zone

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2023
• Tom: Vol. 24, nr 7
• Strony: 35--48
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Madi Housseyn

• LARHYSS Laboratory, University of Biskra, 7000, Algeria
• Faculty of Sciences and Technology, University of Tamanghasset, 11000 Algeria

• https://orcid.org/0000-0003-2041-8722

autor

Bedjaoui Ali

• LARHYSS Laboratory, University of Biskra, 7000, Algeria

autor

Elhoussaoui Abdelghani

• Agence Nationale des Ressources Hydriques, Tamanghasset, 11000, Alegria

autor

Elbakai Lala Oulad

• Faculty of Sciences and Technology, University of Tamanghasset, 11000 Algeria

autor

Bounaama Aya

• Faculty of Sciences and Technology, University of Tamanghasset, 11000 Algeria

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