| 八ッ場ダム | 06/09 |
| 貯水率(%) | |
| 12時間履歴 | ||
| 00:00 | 70.9 | ▼ |
| 23:00 | 71.0 | - |
| 22:00 | 71.0 | ▼ |
| 21:00 | 71.1 | - |
| 20:00 | 71.1 | ▼ |
| 19:00 | 71.2 | - |
| 18:00 | 71.2 | ▼ |
| 17:00 | 71.3 | ▼ |
| 16:00 | 71.4 | - |
| 15:00 | 71.4 | ▼ |
| 14:00 | 71.5 | - |
| 13:00 | 71.5 | ▼ |
| 2時間履歴(10分) | ||
| 00:30 | 70.9 | - |
| 00:20 | 70.9 | - |
| 00:10 | 70.9 | - |
| 00:00 | 70.9 | - |
| 23:50 | 70.9 | - |
| 23:40 | 70.9 | ▼ |
| 23:30 | 71.0 | - |
| 23:20 | 71.0 | - |
| 23:10 | 71.0 | - |
| 23:00 | 71.0 | - |
| 22:50 | 71.0 | - |
| 22:40 | 71.0 | - |