ABSTRACT
The Wadi Surdud coastal plain comprises an area of about 1800 km2 and consists of Quaternary alluvial deposits, which form an unconfined aquifer. Considering the amount of withdrawal, recharge and discharge, there is a possibility of deterioration of quality of groundwater due to saltwater intrusion and also due to upconing of lower Baid Formation saline water. This problem was investigated using chemical criteria and a quasi 3-D finite difference model. The results indicate that saline water intrusion is confined to small areas along the coast while contribution by Baid Formation is large towards the eastern part.
