WQI values give a clear representation of the utilisation of lake water for drinking and other purposes. Calculated results have revealed that WQI values range from 32.8 to 94.75 with a mean value of 72.91 and most of the samples fell under ‘Poor’ categories (except S1, ‘Good’) during the pre-monsoon (Table 3). While in post-monsoon, the WQI varies from 25.31 to 94.75 with an average of 44.47 and the majority of samples were of ‘Good’ water quality (except S5, ‘Poor’ and S6, ‘Moderate’). WQI values of lake water demonstrate notable variations in the quality of water in various sampling locations (Figure 2). A maximum decline in water quality is observed at sampling point S5, due to the discharge of wastewater and raw sewage from nearby human settlements. The obtained results infer that the lake's water quality in some locations is at an alarming stage. Therefore, necessary initiatives and measures should be taken on an urgent basis for proper management of the lake and restoration of the lake ecosystem to achieve the desired water quality.