Author(s): Rahul Kumar and Ramesh C Sharma

Abstract: The current study was carried out to investigate the water quality of Badhani Tal. The samples were collected for a period of one year during January, 2015 to December, 2015. A total of 16 physico-chemical parameters were assessed to develop the water quality index. It is the first report on any aspect of Badhani Tal. The mean values of pH ranged from 6.9 to 7.8; water temperature fluctuated from 16.1 to 25.12 ⁰C; dissolved oxygen varied from 8.2 to 9.8 mg.l^-1; free CO₂ varied from 1.23 to 2.13 mg.l^-1; total dissolved solids varied from 110 to 188 mg.l^-1; calcium from 11.22 to 28.86 mg.l^-1 and magnesium from 1.45 to 5.82 mg.l^-1. The Water Quality Index was recorded as 37.66. Most of the values of physico-chemical parameters are within the prescribed limits of WHO/BIS recommended for the water used for drinking purpose. The calculated value of WQI based on the weight values of these physico-chemical parameters revealed the ‘excellent’ water quality of the lake. The government officials have to make policies and take necessary action for its conservation and management.

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