Rivers are one of the most important water resources in the earth that play a key role in supplying water required for various activities such as agriculture, industry and drinking. Protection and optimal use of water resources is one of the most important the principles of sustainable development of any country. One of the most important factors that always threatens the quality of river water is the discharge of untreated wastewater in urban, industrial and agricultural centers. Discharge of various types of agricultural, industrial and urban wastewater into rivers has made rivers one of the critical hotspots in terms of pollution Surface water qualities in different regions are different due to the diversity of geological structures and hydrogeological factors. Recognizing and evaluating the quality of water resources in its management and optimal use is of great importance. Hence, determining the parameters that can well-express the water quality and also creating a water quality monitoring system with appropriate efficiency are problems in assessing surface water quality.
