Abstract

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.