Abstract
A Study was carried out in Upper Manair Dam Located in Narmal Village Rajanna Siricilla District. In the present study, monthly variation of Physico-chemical parameters and phytoplankton in Upper manair dam carried out for a period of one year. The various Physico-chemical parameters like Temperature, pH, carbonates, bicarbonates, chlorides, Total hardness, calcium, Magnesium, Dissolved oxygen, Nitrates, Nitrites, Phosphates and sulphates were analyzed. The values of Physico-chemical parameters which were found in the lake always below the drinking water quality standards. Upper Manair Dam, for a period of one years. The phytoplankton revealed the presence of four major groups: Cyanophyceae, Chlorophyceae, Euglenophyceae and Bacillariophyceae. This Upper Manair Dam provides multiple uses like source of drinking water for uncountable rural and urban communities and livestock, fish culture, recharge of ground water, etc.,[1]. Therefore, it can be concluded that the water of the Lake is fit for consumption according to drinking water quality standards [2].
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