| 八ッ場ダム | 04/06 |
| 貯水率(%) | |
| 12時間履歴 | ||
| 04:00 | 56.8 | ▲ |
| 03:00 | 56.7 | ▲ |
| 02:00 | 56.6 | ▲ |
| 01:00 | 56.5 | ▲ |
| 00:00 | 56.4 | ▲ |
| 23:00 | 56.3 | ▲ |
| 22:00 | 56.2 | ▲ |
| 21:00 | 56.1 | ▲ |
| 20:00 | 56.0 | - |
| 19:00 | 56.0 | ▲ |
| 18:00 | 55.9 | ▲ |
| 17:00 | 55.8 | ▲ |
| 最新 | 56.7 | |
| 前日 | 55.4 | |
| 前々日 | 53.5 |
| 2時間履歴(10分) | ||
| 04:20 | 56.8 | - |
| 04:10 | 56.8 | - |
| 04:00 | 56.8 | ▲ |
| 03:50 | 56.7 | - |
| 03:40 | 56.7 | - |
| 03:30 | 56.7 | - |
| 03:20 | 56.7 | - |
| 03:10 | 56.7 | - |
| 03:00 | 56.7 | - |
| 02:50 | 56.7 | ▲ |
| 02:40 | 56.6 | - |
| 02:30 | 56.6 | - |