Assessment of physico-chemical and biological parameters in Fox Sagar Lake, Hyderabad, Telangana

Three sampling stations were selected from the Fox Sagar Lake and are characterized. The water samples from the surface were collected from the three sampling stations every month in polythene cans for a period of 2 years from June 2013 to May 2015. All the samples were carried to the laboratory. The samples were analyzed on the same day for different physico-chemical factors following the standard methods. One litre of the sample was kept in sedimentation columns after adding 4% Formaldehyde solution. In Fox Sagar lake four groups of algae were recorded i.e, Cyanophyceae, Chlorophyceae, Bacillariophyceae and Euglenophyceae. Among the four groups of algae Cyanophyceae dominated over the other groups of algae, followed by Chlorophyceae. All the physico chemical parameters are well above the permissible limits. Hence on the basis of both physicochemical and biological parameters the lake is polluted. From the foregoing accountit can be concluded that the lake is highly polluted and eutrophic in nature.