The turbidity and pH are two key factors in any aquatic ecosyatems. The present paper highlights the seasonal variations of turbidity and pH in Tamiraparani River (West) from June 2011 to May 2013. Twelve stations were selected for the study. The study reveals that high turbidity of 5.5 NTU was found in Station 9 (S9) during the months June-Aug (2011 and 2012), Sept-Nov (2011and 2012) and Mar-May (2013), and low turbidity of 0.2 NTU was found in stations S1, S3, S4, S5 during Dec to Feb (2011, 2012) and Mar-May (2012).The pH was found to be acidic (below 7) in all the seasons. However, higher pH level was found during bothmonsoon seasons in all the station studied. The fluctuation in pH due to rain water influx is also discussed. The turbidity and pH was found to be significantly correlated (r=0.6780) in the 7th degree polynomial fit and the relationship established and discussed.