COLUMBIA--CHIEF JOSEPH DAM (CHJW1)
| Observed | Forecast/Trend Issued: 2026-07-21 09:33 PDT | ||
| Date/Time (PDT) | Pool Height | Date/Time (PDT) | Pool Height |
| 2026-07-21 00:00 | 951.9 | 2026-07-21 23:00 | 952.3 |
| 2026-07-20 00:00 | 952.8 | 2026-07-22 05:00 | 952.3 |
| 2026-07-19 00:00 | 953.3 | 2026-07-22 11:00 | 952.3 |
| 2026-07-18 00:00 | 953.2 | 2026-07-22 17:00 | 952.3 |
| 2026-07-17 00:00 | 953.4 | 2026-07-22 23:00 | 952.3 |
| 2026-07-16 00:00 | 953.3 | 2026-07-23 05:00 | 952.3 |
| 2026-07-15 00:00 | 952.9 | 2026-07-23 11:00 | 952.3 |
| 2026-07-14 00:00 | 953.1 | 2026-07-23 17:00 | 952.3 |
| 2026-07-13 00:00 | 948.6 | 2026-07-23 23:00 | 952.3 |
| 2026-07-12 00:00 | 953.3 | 2026-07-24 05:00 | 952.3 |
| 2026-07-11 00:00 | 953.4 | 2026-07-24 11:00 | 952.3 |
| 2026-07-24 17:00 | 952.3 | ||
| 2026-07-24 23:00 | 952.3 | ||
| 2026-07-25 05:00 | 952.3 | ||
| 2026-07-25 11:00 | 952.3 | ||
| 2026-07-25 17:00 | 952.3 | ||
| 2026-07-25 23:00 | 952.3 | ||
| 2026-07-26 05:00 | 952.3 | ||
| 2026-07-26 11:00 | 952.3 | ||
| 2026-07-26 17:00 | 952.3 | ||
| 2026-07-26 23:00 | 952.3 | ||
| 2026-07-27 05:00 | 952.3 | ||
| 2026-07-27 11:00 | 952.3 | ||
| 2026-07-27 17:00 | 952.3 | ||
| 2026-07-27 23:00 | 952.3 | ||
| 2026-07-28 05:00 | 952.3 | ||
| 2026-07-28 11:00 | 952.3 | ||
| 2026-07-28 17:00 | 952.3 | ||
| 2026-07-28 23:00 | 952.3 | ||
| 2026-07-29 05:00 | 952.3 | ||
| 2026-07-29 11:00 | 952.3 | ||
| 2026-07-29 17:00 | 952.3 | ||
| 2026-07-29 23:00 | 952.3 | ||
| 2026-07-30 05:00 | 952.3 | ||
| 2026-07-30 11:00 | 952.3 | ||
| 2026-07-30 17:00 | 952.3 | ||
| 2026-07-30 23:00 | 952.3 | ||
| 2026-07-31 05:00 | 952.3 | ||