| 大島(国) |
(渡良瀬川) |
| 計画高水位 | ||
| 氾濫危険水位 | ||
| 避難判断水位 | ||
| 氾濫注意水位 | ||
| 水防団待機水位 | ||
| 現在水位 | 2.53 | ↑ |
| 09/08 | 10:00 | 1.01 | ↑ |
| 11:00 | 1.04 | ↑ | |
| 12:00 | 1.03 | ↓ | |
| 13:00 | 1.01 | ↓ | |
| 14:00 | 0.80 | ↓ | |
| 15:00 | 0.34 | ↓ | |
| 16:00 | 0.48 | ↑ | |
| 17:00 | 0.57 | ↑ | |
| 18:00 | 0.56 | ↓ | |
| 19:00 | 0.55 | ↓ | |
| 20:00 | 0.70 | ↑ | |
| 21:00 | 0.81 | ↑ | |
| 22:00 | 1.06 | ↑ | |
| 23:00 | 1.43 | ↑ | |
| 09/09 | 00:00 | 1.71 | ↑ |
| 01:00 | 1.86 | ↑ | |
| 02:00 | 1.98 | ↑ | |
| 03:00 | 2.02 | ↑ | |
| 04:00 | 2.08 | ↑ | |
| 05:00 | 2.20 | ↑ | |
| 06:00 | 2.30 | ↑ | |
| 07:00 | 2.35 | ↑ | |
| 08:00 | 2.40 | ↑ | |
| 09:00 | 2.51 | ↑ | |
| 10:00 | 2.53 | ↑ |