Evaluation of water qualities of discharging area of some running waters into Black Sea in the Central Black Sea Region of Turkey (original) (raw)

1. Samsun province which is found in the Central Black Sea Region has two big basins which named Yeşilırmak and Kızılırmak. The running waters in Samsun province in these two basins are rapidly deteriorating due to pollution, and water pollution is at the top among the priority environmental problems. 2. Pollutants coming from point-source and non-point-source pollution enter to the runnning waters in these river basins and discharge into the Black Sea. In this study, water quality of in the river mouth regions of some running waters such as Terme Creek, Yeşilırmak River, Gelemen Stream and Mert River which are located in Yeşilırmak River Basin and Kızılırmak River in Kızılırmak River Basin were examined. The study was conducted during rainy seasons (2013-autumn, 2014-spring). 3. Temperature, pH, dissolved oxygen, oxygen saturation, total dissolved solids (TDS), electrical conductivity (EC) and salinity were measured in situ by multi-parameter meter. Turbidity was measured by turbidimeter and ammonia, nitrite, nitrate, sulfate, phosphate, phosphate phosphorus, calcium, magnesium and total hardness were measured with spectrophotometric methods by using HACH kits. 4. When the results of the research were compared with the parameters in the Surface Water Quality Regulation, temperature, pH, dissolved oxygen, oxygen saturation, TDS, nitrate-N and sulfate values of the running waters corresponded to the water quality class I. EC, nitrite-N and phosphate-P values corresponded to the water quality class II property. The highest EC (2495 µS/cm) was found in Terme Creek and the highest nitrite-N (0.025 mg/l) was measured in the mouth of Yeşilırmak River, and the highest phosphate-P (0.231 mg/l) was found in the mouth of Mert River. 5. The river basins must be preserved, and they should be monitored for the fulfillment of Water Framework Directive in Turkey.