Phytoplankton occupies a remarkable position as a primary producer in the food chain of aquatic ecosystem. Their distribution depends on various hydrobiological variables. The seasonal observation of phytoplankton showed a total of 52 species belonging to four classes namely Bacillariophyta 16, Chlorophyta 22, Cyanophyta 11, and Euglenophyta 3. Due to eutrophication, few microalgal mainly chroococcus turgidus, Oscillatoria limosa, Microcystis aeruginosa and Anabaena circularis species over grow and form algal blooms. The algal diversity studies and bloom formation serve as to indicate the water quality of the freshwater environment.