COLUMBIA--PRIEST RAPIDS DAM (PRWW1)
| Observed | Forecast/Trend Issued: 2026-05-08 15:21 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-05-09 00:00 | 121500 | 2026-05-09 11:00 | 173843.76 |
| 2026-05-08 00:00 | 142900 | 2026-05-09 17:00 | 173944.8 |
| 2026-05-07 00:00 | 158400 | 2026-05-09 23:00 | 173530.96 |
| 2026-05-06 00:00 | 167600 | 2026-05-10 05:00 | 173427 |
| 2026-05-05 00:00 | 170400 | 2026-05-10 11:00 | 173028.28 |
| 2026-05-04 00:00 | 160000 | 2026-05-10 17:00 | 171561.32 |
| 2026-05-03 00:00 | 173900 | 2026-05-10 23:00 | 169807.68 |
| 2026-05-02 00:00 | 168200 | 2026-05-11 05:00 | 168785.74 |
| 2026-05-01 00:00 | 163400 | 2026-05-11 11:00 | 168407.78 |
| 2026-04-30 00:00 | 155300 | 2026-05-11 17:00 | 168188.72 |
| 2026-04-29 00:00 | 136500 | 2026-05-11 23:00 | 167952.52 |
| 2026-05-12 05:00 | 167762.34 | ||
| 2026-05-12 11:00 | 167654.39 | ||
| 2026-05-12 17:00 | 167601.47 | ||
| 2026-05-12 23:00 | 167634.89 | ||
| 2026-05-13 05:00 | 167802.76 | ||
| 2026-05-13 11:00 | 168053.24 | ||
| 2026-05-13 17:00 | 168283.18 | ||
| 2026-05-13 23:00 | 168462.84 | ||
| 2026-05-14 05:00 | 168608.62 | ||
| 2026-05-14 11:00 | 168695.68 | ||
| 2026-05-14 17:00 | 168683.16 | ||
| 2026-05-14 23:00 | 168590.8 | ||
| 2026-05-15 05:00 | 168471.48 | ||
| 2026-05-15 11:00 | 168330.36 | ||
| 2026-05-15 17:00 | 168123.3 | ||
| 2026-05-15 23:00 | 167829.04 | ||
| 2026-05-16 05:00 | 167461.84 | ||
| 2026-05-16 11:00 | 167030.58 | ||
| 2026-05-16 17:00 | 166520.75 | ||
| 2026-05-16 23:00 | 165936.51 | ||
| 2026-05-17 05:00 | 165312.81 | ||
| 2026-05-17 11:00 | 164681.38 | ||
| 2026-05-17 17:00 | 164047.29 | ||
| 2026-05-17 23:00 | 163423.77 | ||
| 2026-05-18 05:00 | 162857.13 | ||