Vulnérabilité à la pollution des eaux de la nappe superficielle d’Oued Righ.

Abstract

Oued Righ valley is located in the northern Sahara, are part of the vast expanses, lagoon of North Africa, the altitude of these valley is below sea level about (-20m), The region is characterized by a Saharan climate. In the region of Oued Righ The need for water increases to increase the needs of the population and the great agricultural activity of the palms What is the result of an intensive exploitation of the deep aquifers of the Terminal Complex and the Intercalary Continent. The Oued Righ valley is fed by irrigation water and urban distribution. hydrochemical analysis has shown the very poor quality of surface water and the existence of anthropogenic pollution resulting in significant chloride values. The salinity of the waters, some of which is of geological origin, is continually increasing by poor management of the resource. According to the GOD method the vulnerability of free groundwater is the most vulnerable, pollutants of superficial origin can repaint water from the water through the unsaturated zone, and the surface water is very vulnerable to pollution, the very poor quality of surface water and infiltration of pollutants from the canal water at the level of the cork, either by accidental spills and then on the ground.