12th International Congress on Advances in Civil Engineering, İstanbul, Turkey, 21 - 23 September 2016, pp.111
The aim of this study is to monitor and assess the surface water quality of the Eastern Black Sea Basin streams, namely Ağasar, Fol, Galanima, Değirmendere, Yomra, Karadere, Manahoz, and Solaklı, considering water temperature (T, °C), dissolved oxygen concentration (DOC, mg/L) and saturation (DOS, %), pH, and electrical
conductivity (EC, μS/cm). The water-quality variables have been monitored monthly in situ at one station, which was selected at the point where the stream discharges into the Black Sea, for each stream during a period of 12 months from March 2015 to February 2016. Based on the monitoring data, the streams are classified with reference to Turkish Surface Water Quality Regulation.
Considering the mean values for each stream, the range was 12.70-14.84 °C (Solaklı-Ağasar) for T, 10.43-11.38 mg/L (Yomra-Ağasar) for DOC, 100-112 % (Yomra-Ağasar) for DOS, 8.21-8.56 (Manahoz-Galanima) for pH, and 91.48-265.25 μS/cm (Manahoz-Galanima) for EC respectively.
The streams had higher T and EC values during a three-month period from August to October, corresponding to the seasonal trend of stream discharge. On the other hand, the streams had lower T values, which correspond to the temporal trend of local climate being the primary factor affecting stream temperature, resulted in high DOC during a period from January to March. The statistical analysis showed that DOC is negatively and significantly correlated with T for each stream except for the Ağasar Stream.