| 渡良瀬貯水池 | 05/18 |
| 貯水位(m) | |
| 12時間履歴 | ||
| 23:00 | 15.08 | - |
| 22:00 | 15.08 | - |
| 21:00 | 15.08 | - |
| 20:00 | 15.08 | ▲ |
| 19:00 | 15.07 | - |
| 18:00 | 15.07 | - |
| 17:00 | 15.07 | - |
| 16:00 | 15.07 | ▼ |
| 15:00 | 15.08 | - |
| 14:00 | 15.08 | ▼ |
| 13:00 | 15.09 | - |
| 12:00 | 15.09 | ▼ |
| 2時間履歴(10分) | ||
| 23:10 | 15.08 | - |
| 23:00 | 15.08 | - |
| 22:50 | 15.08 | - |
| 22:40 | 15.08 | - |
| 22:30 | 15.08 | - |
| 22:20 | 15.08 | - |
| 22:10 | 15.08 | - |
| 22:00 | 15.08 | - |
| 21:50 | 15.08 | - |
| 21:40 | 15.08 | - |
| 21:30 | 15.08 | - |
| 21:20 | 15.08 | - |