Potentialités En Eau Des Karsts Dans La Region De Setif N-E Algerien

Abstract

The territory of the wilaya of Sétif has a significant underground water reserve which manifests itself in the form of resurgences of fresh water emerging between the carbonate Eocene formations and those of the carbonate platform of Cretaceous and probably Jurassic age. This water reserve corresponds to the level of allochthonous south Sétifienne ꓼ djebel Guergour and Anini in the north and djebel sekrin, Braou, Tnoutit, agmerouel, tella, Zdim, Kalaoun, and Youssef in the south. Among the groundwater bodies, karst aquifers are widely used as a source of drinking water. These formations are the object of our work, which consists in carrying out studies on the characteristics of karsts from a geological, hydrogeological and hydrochemical point of view of the Sétifien territory. Karst is a landscape resulting from particular erosion processes: Karstification. These processes are controlled by the dissolution of carbonate rocks (limestone and dolomite) constituting the subsoil of the regions concerned. The karst is therefore also an aquifer: the karst aquifer. The Sétif region is the seat of a complex hydrogeological domain, that of karstic aquifers located in the carbonate massifs of the Sétifien ensemble. Hydrochemistry has shown that these waters are of very good quality and they meet drinking water standards.