Characterization and Impact of Rainbow Trout Farm Effluent on Water Quality of Haraz River

The Haraz River is one of the most important rivers in the North of Iran which almost 27 salmon fish farms. Inlet and outlet waters of three farms as a representative of upstream, middle-stream and downstream were selected and evaluated in terms of physical, chemical and bacterial on Haraz River. Results of this study showed that PO4 -3, TP, NO2, NH4+, TDS, EC were increased significantly from Farm A to Farm C. The results suggest that suitable distance between farms are different and depends on the fish populations and farms activities, dilution and self-purification capacities of the water body

Keywords:

Rainbow Trout farm , Effluent , Environmental impact , HarazRiver , Iran