Quality assessment of groundwater in Central Nigde (Central Anatolia, Türkiye)

Year 2025, Volume: 14 Issue: 2, 1 - 1

Uğur Erdem Dokuz , Selma Yaşar Korkanç , Mustafa Korkanç , Hilal Dokuz

Abstract

This study aims to assess the groundwater quality and usability of the alluvial aquifer where the city center of Niğde is located. Groundwaters were evaluated based on their hydrochemical properties using national and international standards. The water quality was assessed for drinking and domestic use; agricultural irrigation suitability was determined based on Electrical Conductivity (EC), Total Hardness (TH), Sodium Adsorption Ratio (SAR), Sodium Percentage (%Na), Magnesium Ratio (MR), Residual Sodium Carbonate (RSC), Kelly Index (KI), and Permeability Index (PI); while industrial usability was evaluated using the Langelier Saturation Index (LI), Larson-Skold Index (LS), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI), Aggressiveness Index (AI), Chloride-Sulfate Mass Ratio (CSMR), and mineral saturation indices. The results indicate that the groundwater in the study area is generally suitable for irrigation. However, in terms of drinking and domestic use, contamination was detected due to agricultural activities in the central part of the alluvial aquifer and mixing with geothermal waters in the downstream sections. Despite the low ion content in the groundwater in the recharge zone of the aquifer, it was concluded that the groundwater is not suitable for industrial use due to the low pH and high ion load in the region where the geothermal fluid mixture is active.

Keywords

Niğde, Alluvium aquifer, Hydrochemsitry, Water quality

Project Number

FEB2016/14-BAGEP ve MMT2020/1-BAGEP

Niğde (Orta Anadolu, Türkiye) Merkezi yeraltısuyunun kalite değerlendirmesi

Abstract

Bu çalışmanın amacı Niğde kent merkezinin üzerinde yer aldığı alüvyon akiferin yeraltısuyu kalitesinin ve kullanım olanaklarının belirlenmesidir. Yapılan çalışmada, yeraltısuları ulusal ve uluslararası standartlar yardımıyla içme ve kullanma suyu; Elektriksel İletkenlik (EC), Toplam Sertlik (TH); Sodyum Adsorbsiyon Oranı (SAR); Sodyum Yüzdesi (%Na); Magnezyum Oranı (MR); Kalıntı Sodyum Karbonat (RSC); Kelly İndisi (KI), Permeabilite İndisi (PI) yardımıyla tarımsal sulama suyu; Langier Doygunluk İndisi (LI), Larson-Skold İndisi (LS), Ryznar Stabilite İndisi (RSI), Puckorius Kabuklaşma İndisi (PSI), Agresiflik İndisi (AI), Klorür Sülfat Kütle Oranı (CSMR) ve mineral doygunluk indisleri yardımıyla da endüstriyel amaçlı kullanma suyu bakımından değerlendirilmiştir. Çalışma alanındaki suların genel olarak sulamaya uygun kalitede sular olduğu, içme-kullanma suyu olarak ise alüvyonun orta kısmında tarımsal kirlilik, mansap kısmına doğru jeotermal sularla karışım sonucu kirlilik saptanmıştır. Akiferin beslenme bölgesinde yeraltısuyunda düşük iyon içeriğine rağmen, jeotermal akışkan karışımın etkin olduğu bölgede düşük pH ve yüksek iyon yükü nedeniyle yeraltısularının endüstriyel kullanıma uygun olmadığı sonucuna varılmıştır.

Keywords

Niğde, Alüvyon akifer, Hidrokimya, Su kalitesi

Supporting Institution

Niğde Ömer Halisdemir Üniversitesi

Project Number

FEB2016/14-BAGEP ve MMT2020/1-BAGEP

Thanks

Bu çalışma FEB2016/14-BAGEP ve MMT2020/1-BAGEP no’lu projeler kapsamında Niğde Ömer Halisdemir Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından desteklenmiştir. Yazarlar Niğde Ömer Halisdemir Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi'ne teşekkür eder.

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