Étude de reconnaissance hydrogéologique des plaines d’Aïn Azel et d’Aïn Lahdjar (Sud Sétifien- Algérie Nord-orientale)

Abstract

The Aïn Azel Aïn Lahdjar plain name formerly "Ampère, Béhagle", it is located 50 km south of "Sétif". This region is characterized by a semi – arid Climate. From a geological point of view, most of the formations are predominantly carbonate, limestones and marls dated from the secondary which outcrop at the level of the massifs, and heterogeneous detrital formations dated from the Mio-plio-quaternary which outcrop at the level of plain. Several aquifers characterize the zone. There are Mio-plioquaternaire, Eocene, Crétace and the Jurassic. The aim of our work is to carry out a hydro geological survey on the plains of Ain Azel Ain Lahdjar area which belongs to the Par autochthonous and autochthonous Hodnéens. The latter Constitutes a relay between the south sétifien front in the north and the Hodna Mountains in the south (Dj Boutaleb) .Our approach resided in the hydrological study to determine the supply of aquifers on the one hand and to determine their hydrodynamic characteristics on the other hand.