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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9973

Title: Wells water quality evaluation in southern part of Tohama plain, Saudi Arabia
Authors: G. Abdel--Nasser
A. Al-Faraj
A. Sallam
A. Al-Malik
Keywords: water quality indicators, ground water, SAR, Adj. SAR, Adj.RNa
Issue Date: 2008
Publisher: The 6th International Symposium Agro Environ., Antalya, Turkey,
Abstract: The water quality has more importance for farming, especially in arid and semi-arid regions with limited water resources such as Saudi Arabia. The present study objective is to evaluate water quality of wells in the southern part of Tohama plains. The study area lies between longitudes 42 0' 4.2" E and 43 10' 58.4"E and latitudes 16 24' 24.2" N and 17 48' 29.9" N. About 262 groundwater samples were collected in plastic bottles from different wells in the study area for chemical analysis. The electrical conductivity (ECiw), pH, cations, anions, boron and nitrate were determined for each sample using the recommended methods. Also, water quality indices were calculated for all samples for samples classification. The results showed that collected samples differed in their chemical characterization. The dominant cations were Na+ (50.32%)> Ca2+ (29.46%)> Mg2+ (18.33%). Also, the dominant anions were Cl- (57.19%) > SO4= (28.56%) > HCO3- (12.84%). About 33.97% of samples have salinity level over 3 dS/m (according to FAO classification), while 49.24% of samples have salinity level over 2.25 dS/m (class C4 according to the USSL classification). The SAR values were in suitable range (88.55% of samples included in class S1). Boron and nitrate levels were in the allowable range. In general, the salinity of wells water in the study areas increased towards the west (sea direction). The water quality of wells showed wide ranges of salinity effect, which makes their use depend on the selected crops grown in the area.
URI: http://hdl.handle.net/123456789/9973
Appears in Collections:College of Foods And Agricultural Science

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