QUALITY OF SURFACE WATERS AND ANTHROPOGENIC ACTION ON THE WATERS OF THE BENI HAROUN DAM NORTHEAST ALGERIA. QUALITE DES EAUX DE SURFACE ET ACTION ANTHROPIQUE SUR LES EAUX DU BARRAGE BENI HAROUN NORD-EST ALGERIEN.

Abstract

The quality of surface water resources is increasingly threatened by pollution; this is related to the discharge of wastewater into rivers and the prolonged drought. The dam of Beni Haroun is subject to human actions it is essential to highlight it because it supplies water to a large area of eastern Algeria. The chemical facies of these waters is sulphated to calcium and magnesium and various statistical tools showed that the mineralized water is especially in connection with Ca++, Mg++, Na+, Cl-, and SO4--. The human actions marked by the COD/BOD5, shows that 96% of the values of this report are greater than 3, which means that much of the organic material is not biodegradable, indicating industrial pollution. The concentration of the various components operate in an inverse manner with the volume of water of the dam, which highlights dilution and concentration phenomena.