| dc.description.abstract | Flooding is a significant and worsening challenge for many human societies, with increasing
severity driven by climate change and land use pressures. This natural hazard constitutes one
of the world's worst natural disasters, causing about a third of all significant human, material,
and economic losses, highlighting the urgent need for effective flood risk management
strategies. This study assessed the flood risk in the Wadi Boudouaou basin using an integrated
approach that combines the Analytical Hierarchy Process method and the Rainfall Runoff
Inundation Model to identify high-risk areas. The AHP method was applied to develop a flood
vulnerability map based on seven key criteria: elevation, slope, rainfall, land use/land cover,
drainage density, topographic wetness index and distance from river to provide a spatial
understanding of areas with varying susceptibility to flood impacts. The RRI model was used
to simulate flood hazard under two major scenarios: with and without the presence of the
Keddara Dam. However, the presence of the dam produced negligible differences in flood
hazard patterns. Furthermore, four rainfall conditions were tested: the actual recorded event,
and hypothetical increases of 20%, 60%, and 100% to simulate the effects of future climate
change. Analysis of the risk map illustrates that the areas situated in proximity to the main
Boudouaou Wadi exhibit very high to high risk to flooding incidents compared to other parts of
the watershed. Additionally, the results showed that flood risk increases significantly with
higher rainfall intensities, particularly along main river channels and low-lying floodplains,
emphasizing the pressing need for proactive flood risk management measures. the findings will
provide policymakers, urban planners, and disaster management authorities with actionable
strategies to reduce flood risk and enhance long-term resilience in the Wadi Boudouaou Basin. | en_US |
