| 矢木沢ダム | 06/09 |
| 貯水位(m) | |
| 12時間履歴 | ||
| 00:00 | 848.98 | ▲ |
| 23:00 | 848.95 | ▲ |
| 22:00 | 848.93 | ▲ |
| 21:00 | 848.90 | ▲ |
| 20:00 | 848.89 | ▼ |
| 19:00 | 848.98 | ▼ |
| 18:00 | 849.08 | ▼ |
| 17:00 | 849.14 | ▼ |
| 16:00 | 849.16 | ▲ |
| 15:00 | 849.13 | ▲ |
| 14:00 | 849.11 | ▲ |
| 13:00 | 849.08 | ▲ |
| 2時間履歴(10分) | ||
| 00:10 | 848.98 | - |
| 00:00 | 848.98 | ▲ |
| 23:50 | 848.97 | - |
| 23:40 | 848.97 | - |
| 23:30 | 848.97 | ▲ |
| 23:20 | 848.96 | - |
| 23:10 | 848.96 | ▲ |
| 23:00 | 848.95 | - |
| 22:50 | 848.95 | ▲ |
| 22:40 | 848.94 | - |
| 22:30 | 848.94 | - |
| 22:20 | 848.94 | ▲ |