CONTRIBUTION A L’ETUDE PHYSICO-CHIMIQUE DE L’OUED MOULOUYA ET UN AFFLUENT AU NIVEAU DE LA REGION D’OUTAT EL HAJ

Abstract

The study concerns the analysis of physico-chemical parameters (temperature, pH, E.C, NO₃, Cl, PO₄^3-, HCO₃, SO₄, Ca, Mg) of water of Moulouya river and its tributary "Chog Wadi Al Ard" in order to establish a diagnosis of pollution degree of the river waters in study area. Thus, water samples were carried out at six stations in two different seasons in order to establish a comparison between a dry period and during floods.

The analytical results obtained during the study period, show that water stations present calcium bicarbonate and magnesium character. The parameters studied during like the temperature, hydrogen potential, conductivity, alkalis, alkaline, sulphate, chloride show that in general the obtained values  a good quality. Results of nitrate and orthophosphate analyses give very low values in accord with few “fertilizer and pesticide agricultural treatment”.