Table 7. Comparison community structure Index on benthic macroinvertebrates at each sampling sites (mean±S.D)
| Site | Dominance index (DI) | Species diversity index (H') | Species richness index (RI) | Evenness index (J') |
| 2021 | 2023 | 2021 | 2023 | 2021 | 2023 | 2021 | 2023 |
| St. 1 | 0.46 ± 0.02 | 0.64 ± 0.07 | 3.29 ± 0.21 | 1.76 ± 0.38 | 3.72 ± 0.65 | 1.98 ± 1.23 | 0.75 ± 0.01 | 0.73 ± 0.05 |
| St. 2 | 0.53 ± 0.28 | 0.45 ± 0.07 | 3.16 ± 0.79 | 2.43 ± 0.02 | 4.40 ± 0.31 | 3.23 ± 0.55 | 0.67 ± 0.18 | 0.83 ± 0.06 |
| St. 3 | 0.46 ± 0.17 | 0.55 ± 0.02 | 3.56 ± 0.49 | 2.11 ± 0.15 | 4.80 ± 0.54 | 2.44 ± 0.41 | 0.72 ± 0.05 | 0.78 ± 0.00 |
| St. 4 | 0.51 ± 0.11 | 0.46 ± 0.02 | 3.20 ± 0.64 | 2.28 ± 0.00 | 4.25 ± 1.69 | 2.91 ± 0.07 | 0.71 ± 0.06 | 0.78 ± 0.02 |
| St. 5 | 0.55 ± 0.08 | 0.38 ± 0.05 | 3.29 ± 0.34 | 2.57 ± 0.17 | 5.04 ± 0.48 | 3.36 ± 0.56 | 0.67 ± 0.07 | 0.84 ± 0.02 |
| St. 6 | 0.43 ± 0.01 | 0.55 ± 0.17 | 3.55 ± 0.00 | 2.01 ± 0.35 | 5.27 ± 0.14 | 2.23 ± 0.28 | 0.70 ± 0.01 | 0.77 ± 0.12 |