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Climate change is now widely recognized by the scientific community. Nevertheless, its impact on hydrological extremes is not yet known. Half of the world's natural disasters are floods. These disasters result from heavy rainfall, concentrated in time and space. Morocco has experienced floods of exceptional severity in terms of human and economic losses. The catchment area of Wadi Toudgha is located in the South-East of Morocco with an area of 970 km² considered among the most attractive areas for tourists at national and international level, but this basin suffers from hydrological extremes, especially floods for a long time, these hydrological extremes are hydrometeorological phenomena with often dramatic and catastrophic consequences from a material, human and environmental point of view. The methodology adopted in this scientific contribution allows us to assess the risk of floods, it is based on the idea that the risk of these hydrological extremes is the result of the factor of hazard and the factor of vulnerability, this hydrological modelling allows to understand the spatio-temporal evolution of floods and also to determine the extension of floods and historical floods. According to the application, a flood risk map has been produced to allow managers to take mitigation measures in areas likely to be affected by floods and to act more effectively in case of a flood. |
