Gümüssuyu Pond (Erfelek - Sinop)'s water quality examination

This study was conducted to determine the water quality and pollution of Gümüşsuyu Pond located in Erfelek district of Sinop province. In this respect, physical and chemical water parameters used to determine water quality were measured between April 2018 and March 2019. These measurements were made by taking water samples from four stations representing the whole of Gümüsuyu Pond every month. The stations were chosen as the eastern part, the northwestern part (the deepest part), the southern part and the western part of the Gümüşsuyu Pond. During the study, water samples were taken from these four stations once a month and the obtained twelve-month average values (general average, standard deviation, seasonal average) were examined. In order to determine water quality in water samples taken at these four stations; temperature (oC), dissolved oxygen (mg/L), salinity (ppt), pH, electrical conductivity (S/cm), suspended solids (mg/L), chemical oxygen demand (mg/L), biological oxygen demand (mg/L), chloride (mg/L), phosphate (mg/L), sulfate (mg/L), sulfide (mg/L), sodium (mg/L), potassium (mg/L), total hardness (mg/L), total alkalinity (mg/L), magnesium (mg/L), calcium (mg/L), nitrite (mg/L), nitrate (mg/L), ammonium nitrogen (mg/L), iron (µg/L), lead (µg/L), copper (µg/L), cadmium (µg/L), mercury (µg/L), nickel (µg/L), zinc (µg/L) 28 physicochemical parameters were analyzed. The data of the obtained mean annual physicochemical parameters were statistically compared between the seasons. As a result, it was determined that Gümüşsuyu Pond has class-II water quality according to Surface Waters Water Quality Management Regulation. It is also understood that there is no pollution problem in the pond. Although pond water is classified as very hard water, there is no problem in terms of aquaculture. It may be suggested that the pond is suitable for the cultivation of cold water species such as trout.