Water Quality Modeling of River Tungabhadra near Harihar

River Tungabhadra flowing near Harihar taluk in Karnataka (India), receives waste water discharges from villages on the bank of River and also waste water discharges from industries located in Harihar. The present study involves the implementation of QUAL2KW model to determine the water quality status of this polluted stretch of River. The River samples are collected for post monsoon and lab results are used for calibrating the model. Predicted values of the model are approximately in match with the observed values. Model results for post-monsoons indicate decreasing quality of water from upstream to downstream for the selected segment. . This is because of discharge of domestic waste water from Rajanahalli, Halasabalu and Nalawagal into River, agricultural surface runoff during rain and also due to release of waste water from industries located on banks of River in Harihar. Since many water quality parameters are exceeding their limits, water in this segment is not fit for drinking.