Abstract: Primary production refers to evaluation of the capacity of an ecosystem to build up, at the expense of external energy both radiant and chemical ,primary organic compounds of high chemical potentials for further transformation and flow to higher system levels. The highest values of gross, net primary production and biotic respirations were obtained during winter due to low water temperature, higher transparency, high dissolved oxygen values, bright and clear weather where as in summer because of high water temperature leading towards higher photosynthetic rate as well as higher metabolic rate, the primary productivity also become high and lower values during rainy season due to cloudy weather.