Studies on the Physico-chemical Parameters and Correlation Coefficient of Dharapadavedu Lake, Vellore Tamilnadu, India

The present studies were carried out based on the physical-chemical parameters and the correlation coefficient of Dharapadavedu Lake. Monthly changes in physicochemical parameters such as Water Temperature, Turbidity, pH, Alkalinity, EC, Hardness, Phosphate, Calcium, Magnesium, Nitrate, Nitrite Sulfate, Phosphate, Chloride, Ammonia, Fluoride, Bio-Chemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD) were analyzed for a period of one year from January to December 2021. The results indicated that the physicochemical parameters of the water were within permissible limits and could be used for fish culture, domestic use, and irrigation. The correlation coefficient indicates positive and negative relationships. All the correlations indicate that different parameters are strongly related to each other. A correlation coefficient provides an excellent tool for calculating various water quality parameters within a reasonable degree of accuracy. The observed values of various Physicochemical parameters of water samples were compared with the mean and standard values recommended by WHO. It is discovered that a significant positive correlation exists between Quantities such as EC, Alkalinity, pH, Hardness, Phosphate, Calcium, Magnesium, Nitrate, Sulfate, Phosphate, COD, And BOD contents showing the high significance of the positive relationship (p<0.01 level). There was a significant negative relationship between Chloride, Ammonia, Fluoride, and Nitrite (p< 0.05 level).