Evaluating the suitability of water in border tributaries of The Diyala’s River Basin for various purposes
Keywords:
Diyala River, Border Tributaries, Water Quality Index, PollutionAbstract
This research aimed to examine the water quality of some international tributaries within Diyala River Basin that originate from Iran. Diyala River and its tributaries plays a significant role in providing water for manufacturing, irrigation and domestic purposes for large part of Sulaymaniyah and Diyala Province. Recently, this river and its tributaries (Sirwan, Alwand, Qurato, Hawasan and Zmkan) have suffered from increasing pollution, due to decreasing their flows from Iran as a result of constructing many dams and irrigation projects, as well as changing the course of some of them into Iran. Also, wastes from domestic sewage, industries and agricultural activities are discharging directly into Diyala River and its tributaries without treatment, and then causes deterioration of water quality in large scale. Investigating the tributaries of Diyala River is very important to implement a study for understanding the quality of waters that flow into it. Water Quality Index (WQI) was utilized to describe the quality level of water in the observed tributaries. Some chemical characterization: pH, EC, TH, NO3, DO and F- of water samples were analyzed to calculate the value of WQI at each tributary. Based on the overall values of WQI, waters in all the monitored tributaries are not suitable for drinking purpose; while, most of them are acceptable for irrigation purpose. Water quality was found (Unsuitable/Proper treatment required) only in Alwand Tributary.
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