COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-02-10 09:29 PST | ||
| Date/Time (PST) | Pool Height | Date/Time (PST) | Pool Height |
| 2026-02-10 00:00 | 612.01 | 2026-02-10 10:00 | 612.33 |
| 2026-02-09 00:00 | 611.61 | 2026-02-10 16:00 | 612.33 |
| 2026-02-08 00:00 | 612.13 | 2026-02-10 22:00 | 612.33 |
| 2026-02-07 00:00 | 612.01 | 2026-02-11 04:00 | 612.33 |
| 2026-02-06 00:00 | 611.84 | 2026-02-11 10:00 | 612.33 |
| 2026-02-05 00:00 | 611.87 | 2026-02-11 16:00 | 612.33 |
| 2026-02-04 00:00 | 611.9 | 2026-02-11 22:00 | 612.33 |
| 2026-02-03 00:00 | 611.85 | 2026-02-12 04:00 | 612.33 |
| 2026-02-02 00:00 | 611.96 | 2026-02-12 10:00 | 612.33 |
| 2026-02-01 00:00 | 612.01 | 2026-02-12 16:00 | 612.33 |
| 2026-01-31 00:00 | 612 | 2026-02-12 22:00 | 612.33 |
| 2026-02-13 04:00 | 612.33 | ||
| 2026-02-13 10:00 | 612.33 | ||
| 2026-02-13 16:00 | 612.33 | ||
| 2026-02-13 22:00 | 612.33 | ||
| 2026-02-14 04:00 | 612.33 | ||
| 2026-02-14 10:00 | 612.33 | ||
| 2026-02-14 16:00 | 612.33 | ||
| 2026-02-14 22:00 | 612.33 | ||
| 2026-02-15 04:00 | 612.33 | ||
| 2026-02-15 10:00 | 612.33 | ||
| 2026-02-15 16:00 | 612.33 | ||
| 2026-02-15 22:00 | 612.33 | ||
| 2026-02-16 04:00 | 612.33 | ||
| 2026-02-16 10:00 | 612.33 | ||
| 2026-02-16 16:00 | 612.33 | ||
| 2026-02-16 22:00 | 612.33 | ||
| 2026-02-17 04:00 | 612.33 | ||
| 2026-02-17 10:00 | 612.33 | ||
| 2026-02-17 16:00 | 612.33 | ||
| 2026-02-17 22:00 | 612.33 | ||
| 2026-02-18 04:00 | 612.33 | ||
| 2026-02-18 10:00 | 612.33 | ||
| 2026-02-18 16:00 | 612.33 | ||
| 2026-02-18 22:00 | 612.33 | ||
| 2026-02-19 04:00 | 612.33 | ||
| 2026-02-19 10:00 | 612.33 | ||
| 2026-02-19 16:00 | 612.33 | ||
| 2026-02-19 22:00 | 612.33 | ||
| 2026-02-20 04:00 | 612.33 | ||