Hydrological characteristics and pollution sediment of wslaibat depression south Iraq


This study was conducted on Slaibat depression in Southern Iraq between longitude 45º34´, 45º52 'and Latitude 30º50´, 30º59´, it located between the provinces of Muthanna and Dhi Qar. The result showed that the contribution of wells Al-Ouda and Al-Ghazi in the feeding of the depression. In addition to the contribution of the Valleys, that Slope towards the depression, with different water revenues from one valley to another, with a total of 0.506 billion m3 annually. The results of the Climatic water balance showed that the depression suffers water deficit during most year months, however, water surplus has been concentrated during November, December to February. The sediments were characterized by nuteral pH slightly to moderate. Sediments were characterized during the autumn by the highest concentration lead and cadmium (22.49 and 1.76 mg kg -1 respectively), while sediments, which were characterized during the summer by the highest concentration (0.022 mg kg -1). The overall concentration of heavy elements in the sediments could be classified into permissible limits according to the standards limits of the World Health Organization WHO (2006).