Seasonal variations of physico-chemical characteristics were carried out in Veeranam lake Kattumannarkovil in Cuddalore District, Tamil Nadu, India, for a period of twelve months (January 2017 to December 2017). Nine various physico-chemical parameters were analyzed by using standard methods (APHA, 1998). Water temperature varied from 28.55 to 32.52ºC, pH ranged from 7.23 to 8.28. Turbidity was varied between 26.48 to 40.38 cm and salinity was noted (0.07 to 0.16 ppt). Dissolved oxygen content varied from 4.71 to 5.71 mg/L, calcium (37.56 to 58.36 mg/L), phosphate (0.14 to 0.31), nitrate (0.21 to 0.29 mg/L) and ammonia (0.28 to 0.37 mg/L) also varied independently.
