Assessing the Hydrobiological Parameters of Gaya Ji Dam in Gaya,bihar, India.

Water is one of the most essential natural resource of our planet which is required for survival and sustenance of biota.The ecological status of water body measures the overall health of its aquatic ecosystem. The present investigation deals with month and season wise variation on various hydrobiological parameters of Gaya Ji dam. Water temperature (27.0°C), FCO2 (15.17 mg/L), BA (207.25 mg /L), Chloride content (113.25 mg /L), Sulphate (39.92 mg /L), TH (120.5 mg /L), TN (0.59 mg /L) and BOD (5.85 mg /L) were recorded maximum during summer. pH (7.67), Transparency (43.65 cm), D.O (7.85 mg /L), CA (12.55 mg/L) and GPP (1.88 mg C/L/hr) were reported maximum during winter season where as Silicate (28.42 mg/L) and Phosphate (0.61 mg /L) showed maxima during monsoon.The nature of water was alkaline through out the year and showed bicarbonate type of alkalinity.The study of various hydrobiological parameters and their statistics reveals that the water was nutrient rich and productive which support directly and indirectly the growth of phytoplankton, zooplankton and ichthyofauna.