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The aim of this study is to evaluate the water of the wells existed in the three Oasis within the western desert of Iraq, these Oasis are (Km-98, Al-kesheiti and Fehada ) located within the lower widian district. The ground water observed during one year. Analysis were performed for water samples to be used in evaluation of water for irrigation purposes, according to standard limits suggested by FAO. The results of analyses indicated that the ground water of Km-98 and Al-kesheiti Oasis are classified as slightly to moderate hazard, while ground water of Fahada was classified as hazard water. The sodium adsorption values in all water of oasis are plotted within class S1. The toxic effect of water on plant are unlimited to moderate effect for Na, Cl, B. According to the piper tri linear method, the ground water of Oasis classified as Calcium-Sulphate family with two major water types of alkaline properties thoseand Na-Ca; HCO3-SO4 and Mg-Ca; HCO3-SO4 water type. The origin of the ground water is meteoric (rainfall infiltration).
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AbdulKarem A. M. Alalwany (2013) studied this question.
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