Surface water Quality analysis was analysed in the four perennial tanks of Haliyal Taluk. According to the Digital Elevation model, water chemistry in the four selected water bodies were dependent on precipitation events. Schoeller plot revealed anomalous salinity composition in the Mothikeri tank, indicating urban pollution. Nutrient analysis revealed bimodal fluctuations. Principal Component analysis classified the sample data matrix into four clusters, characterised by distinct nutrient dynamics. Water Quality index revealed poor water quality in the summer samples of Neelvani and Mothikeri Tank.