The variety of phytoplankton seen in water bodies, specifically Kamuni Lake in Shamshabad, Rangareddy district, Telangana is the study area of current research. The current research was carried out in two years, in 2022 and 2023. About 67 species, representing four major groups Bacillariophyceae, Chlorophyceae, Euglenophyceae, and Cyanophyceae were found to be present in Lake Water body during research period, according to the algal diversity survey, among which the Chlorophyceae predominated over all other group of phytoplaktons. The descending order of phytoplankton diversity as follow Chlorophyceae> Bacillariophyceae>Euglenophyceae>Cyanophyceae about 22 species of Bacillariophyceae, 25 species of Chlorophyceae, 6 species of Cyanophyceae and 14 species of Euglenophyceae ,which contribute 38% species of Chlorophyceae, and 33% species of Bacillariophyceae, Euglinophyceae 20% and Cyanophyceae is about 9% According to the study, there were significant variations between these phytoplankton types and the indicators of water quality.