The present study dealt with assessment of the physico –chemical parameters and correlation coefficient of vedadri reservoir, Krishna district, AP, India. The physico-chemical characteristics and correlation coefficient were studied and analyzed during janauary-december 2014. Seasonal variation in water samples of Vedadri in different seasons were observed. The results stated that there was significant seasonal changes in some physico- chemical parameters and most of the parameters were in normal limits and indicated for better quality of lake water. Correlation co-efficient indicates showed high significant positive and negative relationship (p<0.01) and also show significant positive and negative relationship (p<0.05).