Analyse de la sensibilité des bassins versants de la Mitidja Centre et Ouest.

Abstract

In Algeria subterranean waters are the main source of satisfaction of the request in water. Since tens years, the fast urbanization as well as the extensive agricultural increase of the industrial activities and the practices entailed a deterioration of the quality of this resource, already in quantity limited. This situation aggravated by a persistent drought. Consequently it is imperative to act in the sense of its protection and its conservation by the adoption of a preventive approach by the mapping of the vulnerability. Therefore, our choice concerned to the methods the most used, namely DRASTIC and DRIST and finally the new method experimented in Alsace (France) by the GREEPAL. The cartography cannot give good results without a hydrological study, lithologic and hydrogeologic detailed of the region of study. The resultant maps of three methods constitute precious tools for the management.