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Volume :20 Issue : 1 1993      Add To Cart                                                                    Download

Studies of groundwater chemistry of the A1-Shagaya Field-D, Kuwait

Auther : F.M. AL-RUWAIH

 Department of Mathematics, University of Toronto, Toronto, Ontario M5S 1A1, Canada

ABSTRACT

The study area, Field (D), is located in the southwest of Kuwait and occupies an area of 9375 km Field (D) is one of the water well fields of the Al-Shagaya area which supplies Kuwait City with brackish water. Kuwait is characterized by a dry desert climate, with cold winters and hot summers.Geologically, the Dammam limestone aquifer is composed of chalky, siliceous dolomitic limestone of Eocene age, separated from the clastic sediments of the Kuwait Group by a basal clay and a chert layer. Groundwater moves under artesian pressure from SW to NE.The chemical analyses reveal that the groundwater is a brackish water type with an average content of total dissolved solids of 2800 mg/l. Groundwater salinity was almost constant over the period 1977-1989, and increased in the direction of groundwater flow towards the NE. The predicted average groundwater salinity in the year 2000 will be 2835 mg/l. The groundwater is characterized by secondary salinity and shows a simple dissolution or mixing process. Two groundwater chemical types are recognized; these are the Na2SO4 and CaSO4 water types. The high sulphate content in the aquifer is probably related to the dissolution of anhydrite and gypsum layers in the lower parts of the Dammam Formation. The brackish water is used mainly for agricultural and domestic purposes, and about 12% of the water is blended with distilled water for drinking.


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