Sub zone | Branch ratio | Drainage net work compression | ||||||
| Fatoral licence | Floodgating amount | Flood gating grade | Factoral licence | Flood gating amount | Flood gating grade | ||
1 | 57 | Middle | 3 | 0.47 | Middle | 4 | ||
2 | 0.69 | Relatively high | 2 | 0.49 | Middle | 3 | ||
3 | 0.69 | Relatively high | 1 | 0.68 | Relatively high | 2 | ||
4 | 0.40 | Relatively low | 4 | 0.71 | high | 1 | ||