COLUMBIA--WANAPUM DAM (WANW1)
| Observed | Forecast/Trend Issued: 2026-06-26 10:52 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-06-27 00:00 | 161000 | 2026-06-27 05:00 | 149042.69 |
| 2026-06-26 00:00 | 143800 | 2026-06-27 11:00 | 148778.72 |
| 2026-06-25 00:00 | 139500 | 2026-06-27 17:00 | 148666.9 |
| 2026-06-24 00:00 | 150300 | 2026-06-27 23:00 | 148566.62 |
| 2026-06-23 00:00 | 128000 | 2026-06-28 05:00 | 148466.37 |
| 2026-06-22 00:00 | 104200 | 2026-06-28 11:00 | 148364.2 |
| 2026-06-21 00:00 | 111400 | 2026-06-28 17:00 | 146095.29 |
| 2026-06-20 00:00 | 154400 | 2026-06-28 23:00 | 140246.4 |
| 2026-06-19 00:00 | 136100 | 2026-06-29 05:00 | 134283.83 |
| 2026-06-18 00:00 | 120400 | 2026-06-29 11:00 | 131161.68 |
| 2026-06-17 00:00 | 159100 | 2026-06-29 17:00 | 130203.7 |
| 2026-06-29 23:00 | 130075.67 | ||
| 2026-06-30 05:00 | 130221.27 | ||
| 2026-06-30 11:00 | 130421.2 | ||
| 2026-06-30 17:00 | 130570.71 | ||
| 2026-06-30 23:00 | 130659.39 | ||
| 2026-07-01 05:00 | 130470.6 | ||
| 2026-07-01 11:00 | 129731.78 | ||
| 2026-07-01 17:00 | 128838.53 | ||
| 2026-07-01 23:00 | 128369.43 | ||
| 2026-07-02 05:00 | 128512.02 | ||
| 2026-07-02 11:00 | 129348.33 | ||
| 2026-07-02 17:00 | 130682.89 | ||
| 2026-07-02 23:00 | 131903.63 | ||
| 2026-07-03 05:00 | 132575.39 | ||
| 2026-07-03 11:00 | 132684.07 | ||
| 2026-07-03 17:00 | 132372.41 | ||
| 2026-07-03 23:00 | 131791.12 | ||
| 2026-07-04 05:00 | 131077.42 | ||
| 2026-07-04 11:00 | 130301.28 | ||
| 2026-07-04 17:00 | 129461.79 | ||
| 2026-07-04 23:00 | 128558.09 | ||
| 2026-07-05 05:00 | 127622.73 | ||
| 2026-07-05 11:00 | 126688.84 | ||
| 2026-07-05 17:00 | 125694.47 | ||
| 2026-07-05 23:00 | 124331.95 | ||
| 2026-07-06 05:00 | 120489.85 | ||