Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Water Quality of the Seyfe Lake Basin, Turkey

Version 1 : Received: 8 November 2021 / Approved: 9 November 2021 / Online: 9 November 2021 (14:08:29 CET)

How to cite: Kıymaz, S.; Bleam, W. Water Quality of the Seyfe Lake Basin, Turkey. Preprints 2021, 2021110180 (doi: 10.20944/preprints202111.0180.v1). Kıymaz, S.; Bleam, W. Water Quality of the Seyfe Lake Basin, Turkey. Preprints 2021, 2021110180 (doi: 10.20944/preprints202111.0180.v1).

Abstract

Seyfe Lake is an important part of the natural ecosystem of Central Anatolia and lies within a 1487 km2 closed basin. Groundwater withdrawal for irrigation and recent climatic change have caused lake area to decrease for decades and to completely disappear briefly in August 2008. Groundwater quality is crucial for sustainable irrigation in the Seyfe Basin. A key finding of this study is the difference in the Hardie-Eugster alkalinity-to-calcium ratio of the lake water and that of most groundwater wells in the basin. This difference in the chemical signature of Seyfe Lake and basin groundwater means the evaporative salinization pathway of most groundwater discharged into the lake cannot account for the composition of Seyfe Lake. The ratio of actual evapotranspiration to precipitation will increase under current climate change projections. A second finding, with implications for soil salinization, is that most groundwater in Seyfe Basin has a Hardie-Eugster alkalinity-tocalcium ratio greater than unity, meaning soil alkalization will accompany soil salinization.

Keywords

Electrical Conductivity, Sodium Adsorption Ratio, Salinity, Sodicity, Groundwater Chemistry, Surface Water Chemistry, Irrigation Water Quality

Subject

EARTH SCIENCES, Environmental Sciences

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