Evaluation of underground water quali̇ty of Kaman (Kirşehir) region usi̇ng geographical information system (GIS)

The study area includes approximately 1800 km2 in the Kaman district of Kırşehir province. Densities and pollution maps were generated by using GIS (ArcGIS Desktop 10.3) program and the data obtained from terrain and chemical analysis of water samples that are taken from drill and spring water in dry (42 samples) and rainy (23 samples) period. These maps were evaluated together with the geological map of the region and the previous studies (geology, hydrogeology and mineral deposits) in the region, and the groundwater quality in the study area and the factors affecting it were realized. According to the data obtained in the study, depending on the mineral mineralization arsenic (10.00-396.38 ppb) in the south, due to fluorite mine enrichments fluoride (1.5-3.35 ppm) in the west and northeast, depending on the enrichment in the fluorite mine, in the northeast, uranium (dry period = 15.00-36.87 ppb, rainy period = 15.00-33.68 ppb), depending on the fertilizers used in agricultural land nitrate (50.00-109.94 ppm) in the west and ammonium in the north (0.50-1.97 ppm), depending on the gypsum and salts, chloride (250.00-264.49 ppm) and sulfate pollution (250.00-354.25 ppm) in the southwest and it is thought that the water will be negatively affected by the drinking water availability.