Caractéristiques et évolution de la piézométrie de la nappe du Complexe Terminal de la cuvette de Ouargla

Abstract

In the investigation area, the groundwater represent the main resource in water. The development of the agricultural activities associated to demographic growth solicits these reserves more and more. The plain of Ouargla is a saharian region in the Southeast of Algeria, its geological characteristics associate to the humid paleo-climate allowed the installation of favourable conditions to the storage of an important water reserve. In order to a good management of these waters, a good understanding of aquifers mechanism will be necessary. The objective of our study is the determination of the geometry of the aquifers, the modes of he underground out-flow.The area of study contains a system of two aquifers Mio-Pliocene and Senonian aquifers. The Lowering piezometric level of the CT aquifer would be due to