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Statistical assessment of seasonal variations in water quality for different regions in Lake Van (Türkiye)

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Abstract

On earth, surface water bodies interact and change with the natural ecosystems. These surface waters and water quality may be adversely affected due to different factors. To analyze the effects, parameters indicating water pollution and quality and the possible causes of these parameters should be examined. In addition, environmental pollution issues should be controlled by taking measures. The most important surface water body in the province of Van, located in the east of Türkiye, is the biggest soda Lake Van. The population density around the lake, human polluting factors, unconscious beach use, inadequate wastewater treatment, agriculture and livestock activities, small-scale industrial areas, and chemicals used create a pollution effect. In the study, data were obtained during year of 2018 from six important sampling points around Lake Van and from the middle of the lake. Twenty-seven water quality parameters were analyzed separately and together. These variables’ yearly values were evaluated with Turkish Surface Water Quality Regulation (TSWQR, 2015). As a result, these points were determined to have class I in terms of water parameters according to the seasonal data. The basic descriptive statistics were compared with the regulation, and max, mean, and min values were examined. Data analyzed were done with probability-normality, trend analysis, correlation, and regression methods. The results of this study are that general parameters were normal and the quality of the six points continued to be similar. Na+, Cl−, salinity, and TDS were highly correlated, while DO and F were high matrix value parameters. EC, TDS, and SS regression equations provided high correlation parameters.

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Acknowledgements

The authors thank the Regional Directorate of State Hydraulic Works (Türkiye) for supplying the water quality parameters for Lake Van, Türkiye.

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  1. Chemical Engineering Department, Van Yüzüncü Yıl University, 65080, Van, Turkey

    Ayşenur Turan

  2. Mechanical Engineering Department, Van Yüzüncü Yıl University, 65080, Van, Turkey

    Adnan Aldemir

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Ayşenur Turan: conceptualization, methodology, writing—original draft, writing—review and editing, statistical and formal analysis, visualization, prepared figures and tables. Adnan Aldemir: methodology, resources, writing—original draft, formal analysis, validation, writing review and editing, supervision.

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Turan, A., Aldemir, A. Statistical assessment of seasonal variations in water quality for different regions in Lake Van (Türkiye). Environ Monit Assess 195, 237 (2023). https://doi.org/10.1007/s10661-022-10820-3

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