COLUMBIA--THE DALLES DAM (TDAO3)
| Observed | Forecast/Trend Issued: 2026-03-15 10:18 PDT | ||
| Date/Time (PDT) | Pool Height | Date/Time (PDT) | Pool Height |
| 2026-03-15 00:00 | 157.85 | 2026-03-15 17:00 | 159.11 |
| 2026-03-14 00:00 | 157.83 | 2026-03-15 23:00 | 159.11 |
| 2026-03-13 00:00 | 158.78 | 2026-03-16 05:00 | 159.11 |
| 2026-03-12 00:00 | 159.03 | 2026-03-16 11:00 | 159.11 |
| 2026-03-11 00:00 | 159.03 | 2026-03-16 17:00 | 159.11 |
| 2026-03-10 00:00 | 158.82 | 2026-03-16 23:00 | 159.11 |
| 2026-03-09 00:00 | 158.8 | 2026-03-17 05:00 | 159.11 |
| 2026-03-08 00:00 | 158.65 | 2026-03-17 11:00 | 159.11 |
| 2026-03-07 01:00 | 158.65 | 2026-03-17 17:00 | 159.11 |
| 2026-03-06 01:00 | 158.72 | 2026-03-17 23:00 | 159.11 |
| 2026-03-05 01:00 | 158.62 | 2026-03-18 05:00 | 159.11 |
| 2026-03-18 11:00 | 159.11 | ||
| 2026-03-18 17:00 | 159.11 | ||
| 2026-03-18 23:00 | 159.11 | ||
| 2026-03-19 05:00 | 159.11 | ||
| 2026-03-19 11:00 | 159.11 | ||
| 2026-03-19 17:00 | 159.11 | ||
| 2026-03-19 23:00 | 159.11 | ||
| 2026-03-20 05:00 | 159.11 | ||
| 2026-03-20 11:00 | 159.11 | ||
| 2026-03-20 17:00 | 159.11 | ||
| 2026-03-20 23:00 | 159.11 | ||
| 2026-03-21 05:00 | 159.11 | ||
| 2026-03-21 11:00 | 159.11 | ||
| 2026-03-21 17:00 | 159.11 | ||
| 2026-03-21 23:00 | 159.11 | ||
| 2026-03-22 05:00 | 159.11 | ||
| 2026-03-22 11:00 | 159.11 | ||
| 2026-03-22 17:00 | 159.11 | ||
| 2026-03-22 23:00 | 159.11 | ||
| 2026-03-23 05:00 | 159.11 | ||
| 2026-03-23 11:00 | 159.11 | ||
| 2026-03-23 17:00 | 159.11 | ||
| 2026-03-23 23:00 | 159.11 | ||
| 2026-03-24 05:00 | 159.11 | ||
| 2026-03-24 11:00 | 159.11 | ||
| 2026-03-24 17:00 | 159.11 | ||
| 2026-03-24 23:00 | 159.11 | ||
| 2026-03-25 05:00 | 159.11 | ||