COLUMBIA--CHIEF JOSEPH DAM (CHJW1)
| Observed | Forecast/Trend Issued: 2026-05-22 09:29 PDT | ||
| Date/Time (PDT) | Pool Height | Date/Time (PDT) | Pool Height |
| 2026-05-22 00:00 | 952.4 | 2026-05-22 17:00 | 953.9 |
| 2026-05-21 00:00 | 952.5 | 2026-05-22 23:00 | 953.9 |
| 2026-05-20 00:00 | 953.9 | 2026-05-23 05:00 | 953.9 |
| 2026-05-19 00:00 | 953.2 | 2026-05-23 11:00 | 953.9 |
| 2026-05-18 00:00 | 952.6 | 2026-05-23 17:00 | 953.9 |
| 2026-05-17 00:00 | 953.9 | 2026-05-23 23:00 | 953.9 |
| 2026-05-16 00:00 | 952.8 | 2026-05-24 05:00 | 953.9 |
| 2026-05-15 00:00 | 952.3 | 2026-05-24 11:00 | 953.9 |
| 2026-05-14 00:00 | 952.6 | 2026-05-24 17:00 | 953.9 |
| 2026-05-13 00:00 | 953 | 2026-05-24 23:00 | 953.9 |
| 2026-05-12 00:00 | 952.6 | 2026-05-25 05:00 | 953.9 |
| 2026-05-25 11:00 | 953.9 | ||
| 2026-05-25 17:00 | 953.9 | ||
| 2026-05-25 23:00 | 953.9 | ||
| 2026-05-26 05:00 | 953.9 | ||
| 2026-05-26 11:00 | 953.9 | ||
| 2026-05-26 17:00 | 953.9 | ||
| 2026-05-26 23:00 | 953.9 | ||
| 2026-05-27 05:00 | 953.9 | ||
| 2026-05-27 11:00 | 953.9 | ||
| 2026-05-27 17:00 | 953.9 | ||
| 2026-05-27 23:00 | 953.9 | ||
| 2026-05-28 05:00 | 953.9 | ||
| 2026-05-28 11:00 | 953.9 | ||
| 2026-05-28 17:00 | 953.9 | ||
| 2026-05-28 23:00 | 953.9 | ||
| 2026-05-29 05:00 | 953.9 | ||
| 2026-05-29 11:00 | 953.9 | ||
| 2026-05-29 17:00 | 953.9 | ||
| 2026-05-29 23:00 | 953.9 | ||
| 2026-05-30 05:00 | 953.9 | ||
| 2026-05-30 11:00 | 953.9 | ||
| 2026-05-30 17:00 | 953.9 | ||
| 2026-05-30 23:00 | 953.9 | ||
| 2026-05-31 05:00 | 953.9 | ||
| 2026-05-31 11:00 | 953.9 | ||
| 2026-05-31 17:00 | 953.9 | ||
| 2026-05-31 23:00 | 953.9 | ||
| 2026-06-01 05:00 | 953.9 | ||