COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-02-15 10:25 PST | ||
| Date/Time (PST) | Inflow | Date/Time (PST) | Inflow |
| 2026-02-15 00:00 | 113920 | 2026-02-15 22:00 | 123340.75 |
| 2026-02-14 00:00 | 142820 | 2026-02-16 04:00 | 128238.49 |
| 2026-02-13 00:00 | 115770 | 2026-02-16 10:00 | 138530.56 |
| 2026-02-12 00:00 | 138880 | 2026-02-16 16:00 | 145776.54 |
| 2026-02-11 00:00 | 144150 | 2026-02-16 22:00 | 147776.38 |
| 2026-02-10 00:00 | 124150 | 2026-02-17 04:00 | 147904.57 |
| 2026-02-09 00:00 | 112460 | 2026-02-17 10:00 | 147840.24 |
| 2026-02-08 00:00 | 124440 | 2026-02-17 16:00 | 147779.63 |
| 2026-02-07 00:00 | 118300 | 2026-02-17 22:00 | 147722.58 |
| 2026-02-06 00:00 | 114640 | 2026-02-18 04:00 | 147668.59 |
| 2026-02-05 00:00 | 122960 | 2026-02-18 10:00 | 147616.41 |
| 2026-02-18 16:00 | 147566.8 | ||
| 2026-02-18 22:00 | 147518.52 | ||
| 2026-02-19 04:00 | 147471.04 | ||
| 2026-02-19 10:00 | 147423.75 | ||
| 2026-02-19 16:00 | 147375.64 | ||
| 2026-02-19 22:00 | 147327.16 | ||
| 2026-02-20 04:00 | 147278.43 | ||
| 2026-02-20 10:00 | 147229.46 | ||
| 2026-02-20 16:00 | 147179.15 | ||
| 2026-02-20 22:00 | 147128.49 | ||
| 2026-02-21 04:00 | 147077.58 | ||
| 2026-02-21 10:00 | 147027.47 | ||
| 2026-02-21 16:00 | 146977.86 | ||
| 2026-02-21 22:00 | 146928.31 | ||
| 2026-02-22 04:00 | 146878.72 | ||
| 2026-02-22 10:00 | 146830.22 | ||
| 2026-02-22 16:00 | 146781.86 | ||
| 2026-02-22 22:00 | 146733.83 | ||
| 2026-02-23 04:00 | 146685.33 | ||
| 2026-02-23 10:00 | 146636.49 | ||
| 2026-02-23 16:00 | 146587.69 | ||
| 2026-02-23 22:00 | 146539.34 | ||
| 2026-02-24 04:00 | 146491.99 | ||
| 2026-02-24 10:00 | 146444.52 | ||
| 2026-02-24 16:00 | 145727.69 | ||
| 2026-02-24 22:00 | 144269.97 | ||
| 2026-02-25 04:00 | 143266.46 | ||