Research Article
Water Quality Assessment of the Central Himalayan Lake, Nainital
Table 2
Descriptive statistics of water quality parameters for Nainital Lake for all 4 seasons (January, April, July, and October).
| | Parameter | Nainital Lake (Mallital) | Nainital Lake (Tallital) | | For all 4 seasons | Mean ± Std. deviation | For all 4 seasons | Mean ± Std. deviation | | Maximum | Minimum | Maximum | Minimum |
| | 0.18 | 0.09 | 0.143 ± 0.046 | 0.16 | 0.09 | 0.123 ± 0.036 | | Temp. | 22.00 | 17.00 | 19.50 ± 2.08 | 22.00 | 18.00 | 20.50 ± 1.73 | | DO | 8.60 | 7.90 | 8.20 ± 0.29 | 7.20 | 4.00 | 5.77 ± 1.39 | | pH | 8.20 | 7.20 | 7.55 ± 0.47 | 8.20 | 7.40 | 7.75 ± 0.34 | | BOD | 3.50 | 2.80 | 3.25 ± 0.33 | 4.80 | 3.80 | 4.25 ± 0.41 | | Turbidity | 16.00 | 6.00 | 10.25 ± 4.64 | 18.00 | 6.00 | 10.50 ± 5.25 | | TH | 290.00 | 192.00 | 250.00 ± 41.53 | 392.00 | 112.00 | 241.50 ± 125.9 | | TA | 278.00 | 230.00 | 253.50 ± 21.56 | 154.00 | 120.00 | 142.00 ± 15.05 | | TDS | 422.00 | 375.00 | 400.00 ± 23.05 | 582.00 | 359.00 | 443.25 ± 98.29 | | TSS | 390.00 | 286.00 | 338.00 ± 44.92 | 412.00 | 258.00 | 341.25 ± 68.62 | | Cl | 18.00 | 11.00 | 14.50 ± 2.88 | 19.00 | 14.00 | 16.750 ± 2.62 | | EC | 580.00 | 500.00 | 536.00 ± 33.62 | 550.00 | 500.00 | 525.00 ± 28.86 | | Na | 3.20 | 2.42 | 2.79 ± 0.40 | 3.30 | 2.89 | 3.14 ± 0.18 | | K | 14.57 | 11.80 | 12.82 ± 1.20 | 11.24 | 10.27 | 10.57 ± 0.45 | | Pb | .34 | .24 | 0.28 ± 0.04 | .27 | .21 | 0.23 ± 0.02 | | Cu | .24 | .14 | 0.19 ± 0.04 | .22 | .18 | 0.20 ± 0.01 | | Fe | .73 | .62 | 0.68 ± 0.04 | .79 | .64 | 0.70 ± 0.06 | | Zn | .08 | .03 | 0.06 ± 0.02 | .07 | .02 | 0.04 ± 0.02 |
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