Inventaire actualisé des points d’eau du système aquifère de la plaine d’El-Kantara région de Biskra

Abstract

The El-Kantara region lies at the NW boundary of the Wilaya of Biskra belongs to the Aurès Mountains, which is the eastern part of the Atlastic range. On the geological level, it is characterized by alluvial formations and limestones. The clayey and marly formations act as an impermeable substratum allowing the runoff of surface water. El Kantara is subjected to a hyper arid climate, cold winters and warm summer, with an average annual precipitation <200 mm and average annual temperatures of 22.95C. Hydrogeological studies have defined three aquifers: the first is characterized by ancient and current alluvial deposits of the Quaternary water table; the second is characterized by massive fissured Maestrichtien limestones, while the third consists of cracked massive limestones Of the Turonian.The hydrochemical study revealed the influence of geological formations on the nature of the chemical facies of groundwater: sulphated calcium facies associated with gypsum margins and urban waters.