Assessment of Flood Risks and Their Spatial Modelling in the City of Laghouat Using Geographic Information Systems and Remote Sensing.

Abstract

This study aims to assess flood risks in the city of Laghouat using Geographic Information Systems (GIS) and remote sensing. A Water-level-based flood inundation scenarios forthe M'zi Valley was carried out to determine the impact of changes in water levels on the surrounding areas. Factors such as slope, hydrographic network density, elevation and land cover were also integrated using the Analytic Hierarchy Process (AHP) to create a flood hazard map. The accuracy of this model was verified by the relevant authorities and the local population.This study presents a flood hazard map for Laghouat, created using geographic information systems, which provides decision-makers with a scientific basis for urban planning that takes these risks into account.