Several areas of the world and in Morocco are regularly threatened by the phenomenon of floods, and among the areas threatened by floods in Morocco, we find the area of Jebha Which is located on the Mediterranean coast, the phenomenon of flooding is not recent at the level of the city, except that it is felt today in an increasingly strong way because of the demographic, economic, urban and tourist development which the zone knows; It is characterized by fairly short rise times, very high peak flows and a significant load of solid batches increases downstream, which justifies the Total paralysis of economic and social activities, in particular those related to the port, also, the clogging of the work of art which ensures the crossing of the national road "RN16" and the overflows at this point, The port of Jebha is considered as the core for which the Jebha area was built, it is considered as the most sensitive area by floods and the transport of solids by bedloads The watershed of the Jebha area is of the peri-urban type, which manifests itself and presents behaviors of natural and urban type basins, this basin has been subjected to strong pressure, linked to the development of the urban part, and It is also subject to to natural factors and constraints