Table 1.
Mean physical parameters of the water at up-, mid-, and downstream station of Sungai Congkak and Sungai Batu.
| Mean ± SD of parameter | Sungai Congkak | Sungai Batu | ||||
|---|---|---|---|---|---|---|
| Up-S | Mid-S | Down-S | Up-S | Mid-S | Down-S | |
| DO (mg/L) | 8.53 ± 0.15 | 8.65 ± 0.07 | 8.39 ± 0.12 | 8.82 ± 0.18 | 8.68 ± 0.21 | 8.72 ± 0.14 |
| pH | 6.68 ± 0.13 | 6.60 ± 0.14 | 6.61 ± 0.13 | 6.60 ± 0.10 | 6.54 ± 0.08 | 6.54 ± 0.05 |
| Temp (°C) | 23.05 ± 0.29 | 23.43 ± 0.27 | 25.42 ± 0.51 | 23.09 ± 0.27 | 23.52 ± 0.27 | 23.95 ± 0.33 |
| Con (μS/cm) | 35.73 ± 4.50 | 34.17 ± 3.92 | 37.10 ± 4.74 | 28.60 ± 2.67 | 28.97 ± 2.89 | 30.9 ± 3.21 |
| Tur (NTU) | 3.12 ± 0.46 | 6.09 ± 2.22 | 4.96 ± 0.93 | 22.51 ± 8.21 | 19.25 ± 6.25 | 17.66 ± 4.10 |
Up-S = upstream, Mid-S = midstream, Down-S = downstream, DO = dissolved oxygen, Temp = temperature, Con = conductivity, μS = micron siemens, Tur = turbidity, NTU = nephelometric turbidity unit, SE = standard error.