Phythoplankton is a parameter used to determine the trophic status of a waters. A research aim to determine types and abundance of phytoplankton in the Pangean Reservoir has been carried out on June-July 2019. Samples were taken from four station, namely station 1 in the riverine, station 2 and 3 in the transtition and station 4 in the lacustrine area. Water sampler were taken once/week for 3 w…