The use of water resources is steadily increasing with respect to the population growth. This theory also applies in the Kingdom of Morocco specifically in the Sahel-Doukkala region and therefore requires special attention as the water resources are in limited quantity. For industrial, agricultural and domestic reasons, aquifers of this region are subjected to excessive pumping, resulting in environmental harms such as declining groundwater level, which considerably affects both its quality and quantity. The agency of Oued Oum Er R'bia watershed has therefore established a number of strategies for a proper management of those aquifers among which an artificial aquifer recharge to reduce this imbalance; preventing irreversible degradation. This paper is thus devoted to explore solutions that can help characterizing components of the hydrological system of the region in order to determine the potential areas of surface water for its possible remobilization. With an area of 7700 Km2, the semi-arid characteristics and the endoreism at certain location of the region, the geomorphological analysis from digital elevation model (DEM) and the modified equation of Beven-Kirkby index allowed us to locate useful wet and hydromorphic soils from their physical properties revealing remarkable traces of a regular water saturation.