Abstract

Seyfe Lake wetland, which has a catchment area of 1487 km 2 , is located south of the Seyfe closed basin in Kirsehir province. The wetland and its surroundings have the status of Nature Reserve Area, First Degree Natural Protected Area and Ramsar Area. In this study; geological, hydrogeological and hydrochemical aspects of Seyfe Lake wetland and its basin were evaluated. In this scope, hydrochemical properties, irrigation usability and quality of the water resources in the basin were investigated. In the study area, metamorphic series of Paleozoic Kirsehir massif, Cenozoic cover units and Quaternary alluvial units are exposed. The field campaign was carried out in the drainage area in September 2019 and in-situ measurements and water sampling were carried out. According to the in-situ measurements; temperatures of the waters vary between 14.5°C-21.2 o C and pH ranges between 7.15-8.65. Character of these waters are neutral to basic. Specific electrical conductivity values of the waters in the study area are between 370-30500 µS/cm. Water resources in the basin belong to Ca-HCO 3 , Na-HCO 3 and Na-SO 4 facies. Discharge rate of the springs are measured between 0.03 and 2.5 l/s. In the study area, suitability of the water resources for irrigation is evaluated using Wilcox and US Salinity Laboratory classification. It is determined that majority of the sampled waters are suitable for irrigation.

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