Increasing Water Quality Modeling Efficiency by Separating the Year into Hot and Cold Months (Case of Study: Watershed of Sanandaj Gheshlagh Dam)

Subject Areas : Water Resource Management

Seyed Pedram Nainiva ¹ , Kamran Chapi ²

1 - M.Sc. Student, Department of Watershed Management Engineering, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran. *(Corresponding Authours)
2 - Assistant Professor, Department of Rangeland and Watershed Management, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran.

Received: 2017-01-07 Accepted : 2017-05-10 Published : 2019-10-23

Keywords: Sanandaj Gheshlagh Dam, Modeling, Water Qualitative Parameters, discharge,

Abstract :

Background and Objective: Nowadays, water is considered as one of the factors for improvement and economic growth of societies. The hot and cold seasons of the year and its comparison with the non-segregation of the hot and cold seasons are 26 years. Method: In this study, after studying the accuracy of discharge data, electrical conductivity, soluble matter, chlorine, calcium, sodium, magnesium, acidity and sodium uptake ratio of the two stations, it was tried to find appropriate regression relationships between discharge parameter and qualitative parameters. Provide water. Findings: The results showed that the Chehelgazi sub-watershed in cold months, the liner relationship between discharge with electrical conductivity, dissolved solids, chloride and sodium and also the exponential relationship was suitable between discharging with calcium. In warm months for this sub-watershed, the linear relationship presented the suitable relationship between discharge with dissolved solids, electrical conductivity, magnesium, calcium, sodium and the sodium adsorption. Also, the linear relationship was suitable between discharge with dissolved solids, electrical conductivity, chloride and sodium whereas the exponential relationship was better between the discharging with calcium in Khalifehtarkhan sub-watershed. In this sub-watershed, for warm months, the linear relationship was suitable for the relationship between discharge with dissolved solids, electrical conductivity, chloride, sodium and sodium adsorption. The separation comparison of cold and warm months with non-separation showed that non-separation of cold and warm months is not possible the chloride and magnesium estimation (in Chehelgazi sub-watershed) and calcium estimation (in Khalifetarkhan sub-watershed). Discussion and Conclusion: using obtained relationships and seasonal changes of surface waters quality, with discharge rate can create modeling water quality, extraction and recovery of water quality data.

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