Salinité des ressources en eau: Intrusion marine et interaction eaux-roches (maroc occidental)

Abstract

The migratory flow of the population towards large cities, the growth of industrial and agricultural activities in recent years (1990-2006), have caused an increase in demand on the aquifer of the Rharb basin in western Morocco. These heavy demands have resulted in greater mineralization of the groundwater and degradation of its hydrochemical quality (salinization). The objectives of this paper are: to follow the spatial evolution of the hydrochemical quality of the groundwater, and to interpret the processes of the mineralization as a function of seawater intrusion, the hydraulic gradient and the water-storage interactions. The hydrochemical correlations identified in the coastal zone indicated the presence of seawater contamination. The seawater intrusion and the characterization of the pre-Rifian complexes were identified by means of geophysical and seismic surveys.© 2010 IAHS Press.