Spatial Assessment of Water Quality in the Three Reservoir of Cauvery River, Tamil Nadu, India

Abstract

This study was designed to assess the physico-chemical characteristics of Cauvery river three stations (S1- Sozhasiramani dam (Polluted), S2- –Maynor Dam (Less Polluted) and S3- Mettur Dam (Free from Pollution.) during the study period December 2021 to May 2022. The parameters were analysed such as Temperature, transparency, Total hardness, pH, DO2, BOD, Phosphate, Nitrate, Nitrite, Ammonia, Slicate and CR, NPP, GPP. This study concluded that the water quality of three reservoir of Cauvery River during the study period revealed that the three stations (Sozhasiramani dam, Mayanur dam and Mettur dam). Among these reservoir Mayanur dam and Mettur dam could be rated for good quality of water, which is suitable for consuming purpose but Sozhasiramani dam receiving some of the unauthorized textile dyeing and bleaching units in Eroad and Pallipalayam in above units discharge treated and untreated effluent into the municipal drain along with the domestic sewage reached the river cauvery in station 1 is highly polluted, then the other two stations.