Doğu Trakya Bölgesi’nde Yeraltı Suyu Kalitesinin Araştırılması Amacıyla Coğrafi Bilgi Sistemi Yardımı ile Su Kalite İndeksi Uygulaması

Abstract

Su kalitesi değerlendirmesi, çevresel yönetim planlarının daima önemli bir parçası olmuştur. Bu çalışmada, Doğu Trakya Bölgesi’ndeki yeraltı sularının içme ve sulama amaçlı kalitesi değerlendirilmiş ve sonuçların mekânsal dağılımı haritalanmıştır. Çalışma alanındaki 18 adet derin su kuyusundan alınan örneklerin su kalitesinin değerlendirilmesi amacıyla hidrokimyasal özellikleri saptanmıştır. İnsani tüketim amaçlı su kalitesi değerlendirmesi için Su Kalite İndeksi (SKİ) hesaplanmıştır. SKİ değerleri, yeraltısularının % 52’sinin tarımsal ilaçlamadan dolayı “kötü” ve “çok kötü” sınıfında olduğunu göstermiştir. Bununla beraber, sulama amaçlı olarak yeraltı sularının büyük kısmının, sodyum absorbsiyon oranı (SAR), artık sodyum bicarbonat (RSC), sodyum yüzdesi (Na%) ve magnezyum tehlikesi (MH) açısından uygun olduğu görülmüştür. 

Keywords

• Coğrafi Bilgi Sistemleri,Yeraltısuyu,Trakya,Su Kalite İndeksi

Application of Water Quality Index with the Aid of Geographic Information System in Eastern Thrace to Assess Groundwater Quality

Abstract

Water quality assessment has always been a major part of environmental management plans. In this study, the groundwater quality and spatial distribution in the eastern Thrace region was assessed and mapped for agricultural and drinking purposes. Groundwater samples (n = 18) were collected from deep wells in the study area and analyzed for hydrochemical properties for the water quality assessment. The Water Quality Index (WQI) was calculated for the quantification of water quality for human consumption. The WQI values showed that 52 % of the groundwater samples fall in the “poor” and “very poor” category due to agricultural impact. Nevertheless, the majority of the groundwater were suitable for irrigation in terms of sodium absorption ratio (SAR), residual sodium carbonate (RSC), sodium ratio (Na%) and magnesium hazard (MH).

Keywords

• Geographical Information System,Groundwater,Thrace,Water Quality Index

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