This research paper represents a brief analysis of physico-chemical characteristics of three different water bodies namely: earthen pond, cemented pond and lake located at Bhimtal, Nainital, Uttarakhand during winter season. Air temperature, water temperature, pH, DO, free CO2, total alkalinity, total hardness, total nitrogen, nitrite, nitrate, phosphate, ammonium and silicate were the physico-chemical parameters observed during the experimental period. The physico-chemical parameters influencing the aquatic productivity of the water bodies were found in the range of 12 to 17.5°C, 6.5 to 8.8, 5.7 to 8.0 mg/L, 0.36 to 2.7 mg/L, 38 to 63 mg/L, 0.01 to 0.23 mg/L, 0.02 to 0.15 mg/L, 0.4 to 4.3 mg/L, 0.36 to 2.38 mg/L, 0.4 to 158 mg/L, 31 to 46 mg/L, 1.0 to 2.2 mg/L for temperature, pH, dissolved oxygen, free carbon dioxide, total alkalinity, ammonia, nitrite, nitrate, phosphate, silicate, total hardness and total nitrogen, respectively.
Key words: Physico-chemical, aquatic productivity, water.
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