In this present investigation, seasonal distribution of micro algae in Konam reservoir (Visakhapatnam district, Andhra Pradesh) was studied for a period of one year from November 2022 to October 2023. A total of 61 species were reported which belongs to four groups of algae such as Chlorophyceae (26), Bacillariophyceae (15) Cyanophyceae (15) and Euglenophyceae (5). In post monsoon season higher number (57) of micro algal forms were recorded and lower number (41) of microalgae were reported during monsoon season.