
The present study was carried out Seasonal variation of physico chemical parameters from Willington Lake (Latitude: 11° 20' 10" N; Longitude: 79° 32’ 40" E), Tittagudi taluk, Cuddalore district of Tamil Nadu, India. The sampling was carried out for a period of one year from January 2016 to December 2016. The Mean (± SD) value of the Physico chemical parameters viz. Atmospheric Temperature, Water Temperature, Turbidity, Total Dissolved Solid, Electrical Conductivity, pH and Salinity was observed. The maximum value was observed during summer season and the minimum was observed in Monsoon season. The Dissolved Oxygen, Total Alkalinity, Calcium, Nitrate, Nitrite, Phosphate and Silicate were also observed. The maximum value was recorded during Monsoon season and the minimum was investigated in summer season. It was concluded that the seasonal variation of physico chemical parameters to be governed by rainfall and the quality of water generally refers to the component of water present at the optimum level of for suitable growth of plants and animals.