Present investigations were carried out on the physicochemical studies of Govindgarh lake Rewa (M.P.) with special reference to phytoplanktons. Present investigation has been conducted on Govindgarh lake Rewa of Madhya Pradesh with special reference to its zooplankton diversity in relation physico-chemical characteristics. The maximum of total phytoplankton was recorded in winter (December) and summer (April) due to suitable range of temperature. The members of Bacillariophyceae dominated in phytoplankton population. Poor representation was made by the members of Euglenophyceae.