Sub zone | Space | Water way length | |||||||
| Fatoral licence | Floodgating amount | Flood gating grade | Factoral licence | Flood gating amount | Flood gating grade | |||
1 | 0.47 | Relatively low | 4 | 0.36 | Relatively low | 4 | |||
2 | 0.69 | Relatively high | 1 | 0.65 | Relatively high | 1 | |||
3 | 0.52 | Middle | 3 | 0.49 | Middle | 3 | |||
4 | 0.51 | Middle | 2 | 0.44 | middle | 2 | |||