COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-08-27 09:23 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-08-27 00:00 | 92820 | 2026-08-27 23:00 | 83075.94 |
| 2026-08-26 00:00 | 100620 | 2026-08-28 05:00 | 81955.35 |
| 2026-08-25 00:00 | 86360 | 2026-08-28 11:00 | 81864.81 |
| 2026-08-24 00:00 | 67140 | 2026-08-28 17:00 | 81787.61 |
| 2026-08-23 00:00 | 66100 | 2026-08-28 23:00 | 81602.07 |
| 2026-08-22 00:00 | 96890 | 2026-08-29 05:00 | 81268.56 |
| 2026-08-21 00:00 | 94450 | 2026-08-29 11:00 | 80642.24 |
| 2026-08-20 00:00 | 95910 | 2026-08-29 17:00 | 79543.8 |
| 2026-08-19 00:00 | 81680 | 2026-08-29 23:00 | 78124.36 |
| 2026-08-18 00:00 | 95220 | 2026-08-30 05:00 | 76902 |
| 2026-08-17 00:00 | 84890 | 2026-08-30 11:00 | 76223.5 |
| 2026-08-30 17:00 | 75993.43 | ||
| 2026-08-30 23:00 | 75952.25 | ||
| 2026-08-31 05:00 | 75940.94 | ||
| 2026-08-31 11:00 | 75920.97 | ||
| 2026-08-31 17:00 | 75899.54 | ||
| 2026-08-31 23:00 | 75874.22 | ||
| 2026-09-01 05:00 | 71148.84 | ||
| 2026-09-01 11:00 | 61266.49 | ||
| 2026-09-01 17:00 | 54278.81 | ||
| 2026-09-01 23:00 | 52225.34 | ||
| 2026-09-02 05:00 | 51935.1 | ||
| 2026-09-02 11:00 | 51831.48 | ||
| 2026-09-02 17:00 | 51729.77 | ||
| 2026-09-02 23:00 | 51629.53 | ||
| 2026-09-03 05:00 | 51530.47 | ||
| 2026-09-03 11:00 | 51432.2 | ||
| 2026-09-03 17:00 | 51333.35 | ||
| 2026-09-03 23:00 | 51231.82 | ||
| 2026-09-04 05:00 | 51127.33 | ||
| 2026-09-04 11:00 | 51021.57 | ||
| 2026-09-04 17:00 | 50914.1 | ||
| 2026-09-04 23:00 | 50804.08 | ||
| 2026-09-05 05:00 | 50692.76 | ||
| 2026-09-05 11:00 | 50582.99 | ||
| 2026-09-05 17:00 | 50476.43 | ||
| 2026-09-05 23:00 | 50371.96 | ||
| 2026-09-06 05:00 | 50269.35 | ||