
Puthen Dam is a small reservoir regarded as mother of irrigation projects of kanyakumari District receives water from both Pechipparai and Perunchani reservoirs. Five stations were selected from the associated water bodies. The study was carried from April 2013 to April 2014.This present paper deals with the dynamic changes of pH, electrical conductivity metal ions in water and sediments of the reservoir. The seasonal variations in the water and sediment characteristics of the reservoir are presented and the significance is highlighted. The sediment pH found to have significant relationship with water pH in polynomial fit while other parameters are not significantly related. The best fit mathematical models are presented and discussed in the light of previous literature.