LARHYSS Journal
Volume 19, Numéro 3, Pages 127-142
2022-09-28

Floods In El Bayadh City: Causes And Factors



Authors : Hafnaoui Mohammed Amin . Madi Mohammed . Ben Said Mosbah . Benmalek Ahmed .

Abstract

Over the last two decades, climatic changes have played a major role in increasing the frequency of floods. El Bayadh city in Algeria has experienced many floods over the last years; the worst flood occurred in October 2011, which affected both population and property. In this paper, some of the local parameters that contribute to flooding in El Bayadh city were analyzed. These include the constriction caused by urban expansion at the edges of Wadi Deffa, which crosses the city, considerably reducing its cross-section and thereby increasing the risk of flooding. The lack of storm drain designs for severe rainstorms contributes to the stagnation of storm water, further increasing the risk. A reduction in the cross-section of the Wadi leads to a change in the flow velocity, which contributes to the overflow. To mitigate the risk, a redevelopment of Wadi Deffa in the zones that are at risk of overflow is necessary. For this purpose, a flood hazard map of the October 2011 flood was realized based on a numerical simulation using HEC-RAS software and the ArcGIS system. This map can be used as a reference to plan the necessary actions to mitigate flooding in El Bayadh city.

Keywords

Floods ; HEC-RAS ; Wadi Deffa ; El-Bayadh city ; Algeria

Les articles similaires

Factors Leading To Academic Delay In French And English: A Field Study Conducted On A Sample Of Middle Schools In Saida And El-bayadh

Makhlouf Abdelkader .  Merahi Abdelkrim . 
pages 302-319.

Effects Of Morphometric Characteristics On Flash Flood Response At Arid Area (case Study Of Wadi Deffa, El Bayadh City, Algeria).

Hachemi Ali .  Hafnaoui Mohammed Amin .  Madi Mohammed . 
pages 50-57.

The Emergence And Containment Of Marginal Neighborhoods Within The Urban Environment From The Point Of View Of Local Actors - The City Of Bougtob Province Of Bayadh As A Model

Bouabdelli Aicha .  Ben Abdesselam Mohamed . 
pages 401-408.

Developing City Logistics: Characteristics And Underlying Factors - Case : City Of Dubaï 2016-2019 -

Benzidane Yacine .  Benzidane Hadj . 
pages 852-872.

Les Inondations Dans La Vallee Du M’zab : Genese Et Prediction Floods In The M’ Zab Valley (south Algeria) : Genesis And Prediction

Benaoudj Abderraouf .  Touaibia Bénina .  Hubert Pierre . 
pages 20-34.

Formats de citation