Study of Nutrients and Trophic Status of Tighra Reservoir, Gwalior (Madhya Pradesh), India

Dinesh K. Uchchariya, D.N. Saksena


In the present study, transparency (128.70±4.44 cm), total dissolved solids (113.90±4.25 mg L-1), electrical conductivity (138.7±3.51µS/cm), pH (8.47±0.02), free carbon dioxide (0.26±0.05 mg L-1), total alkalinity (28.69±2.28 mg L-1), total hardness (50.10±1.92 mg L-1), chlorides (26.96±0.92 mg L-1), nitrate-nitrogen (0.032±0.0017 mg L-1), inorganic phosphorous (0.009±0.001 mg L-1), calcium (16.70±0.44 mg L-1), magnesium (3.58±0.16 mg L-1), sodium (4.22±0.15 mg L-1) and potassium (2.92±0.07 mg  L-1) were analyzed to assess the trophic status of Tighra reservoir. When various physico-chemical characteristics of Tighra reservoir have been compared with the range values and categories of trophic status as provided by various authors, then Tighra reservoir can safely be placed under the category of oligo-mesotrophic water bodies.

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