COLUMBIA--PRIEST RAPIDS DAM (PRWW1)
| Observed | Forecast/Trend Issued: 2026-09-19 10:41 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-09-19 00:00 | 54100 | 2026-09-19 23:00 | 50253.45 |
| 2026-09-18 00:00 | 56100 | 2026-09-20 05:00 | 51299.59 |
| 2026-09-17 00:00 | 51500 | 2026-09-20 11:00 | 51685.01 |
| 2026-09-16 00:00 | 56300 | 2026-09-20 17:00 | 51742.91 |
| 2026-09-15 00:00 | 44900 | 2026-09-20 23:00 | 51741.72 |
| 2026-09-14 00:00 | 36900 | 2026-09-21 05:00 | 51736.55 |
| 2026-09-13 00:00 | 34200 | 2026-09-21 11:00 | 51730.96 |
| 2026-09-12 00:00 | 41000 | 2026-09-21 17:00 | 51724.92 |
| 2026-09-11 00:00 | 49600 | 2026-09-21 23:00 | 51718.99 |
| 2026-09-10 00:00 | 65500 | 2026-09-22 05:00 | 51744.3 |
| 2026-09-09 00:00 | 55700 | 2026-09-22 11:00 | 51855.76 |
| 2026-09-22 17:00 | 52060.68 | ||
| 2026-09-22 23:00 | 52316.23 | ||
| 2026-09-23 05:00 | 52585.91 | ||
| 2026-09-23 11:00 | 52856.98 | ||
| 2026-09-23 17:00 | 53127.41 | ||
| 2026-09-23 23:00 | 53397.37 | ||
| 2026-09-24 05:00 | 53667.67 | ||
| 2026-09-24 11:00 | 53938.67 | ||
| 2026-09-24 17:00 | 54210.77 | ||
| 2026-09-24 23:00 | 54483.47 | ||
| 2026-09-25 05:00 | 54756.04 | ||
| 2026-09-25 11:00 | 55028.44 | ||
| 2026-09-25 17:00 | 55300.47 | ||
| 2026-09-25 23:00 | 55572.21 | ||
| 2026-09-26 05:00 | 55843.94 | ||
| 2026-09-26 11:00 | 56115.95 | ||
| 2026-09-26 17:00 | 56388.87 | ||
| 2026-09-26 23:00 | 56662.86 | ||
| 2026-09-27 05:00 | 56938.17 | ||
| 2026-09-27 11:00 | 57214.75 | ||
| 2026-09-27 17:00 | 57491.88 | ||
| 2026-09-27 23:00 | 57769.3 | ||
| 2026-09-28 05:00 | 58047.16 | ||
| 2026-09-28 11:00 | 58325.52 | ||
| 2026-09-28 17:00 | 58604.23 | ||
| 2026-09-28 23:00 | 58883.07 | ||
| 2026-09-29 05:00 | 59162.18 | ||