| 矢木沢ダム | 04/02 |
| 貯水位(m) | |
| 12時間履歴 | ||
| 12:00 | 831.01 | ▲ |
| 11:00 | 830.93 | ▲ |
| 10:00 | 830.87 | ▲ |
| 09:00 | 830.81 | ▲ |
| 08:00 | 830.74 | ▲ |
| 07:00 | 830.68 | ▲ |
| 06:00 | 830.62 | ▲ |
| 05:00 | 830.56 | ▲ |
| 04:00 | 830.50 | ▲ |
| 03:00 | 830.44 | ▲ |
| 02:00 | 830.38 | ▲ |
| 01:00 | 830.32 | ▲ |
| 2時間履歴(10分) | ||
| 12:40 | 831.04 | - |
| 12:30 | 831.04 | ▲ |
| 12:20 | 831.03 | ▲ |
| 12:10 | 831.02 | ▲ |
| 12:00 | 831.01 | ▲ |
| 11:50 | 830.99 | - |
| 11:40 | 830.99 | ▲ |
| 11:30 | 830.96 | ▲ |
| 11:20 | 830.95 | ▲ |
| 11:10 | 830.94 | ▲ |
| 11:00 | 830.93 | - |
| 10:50 | 830.93 | ▲ |