COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-01-31 10:02 PST | ||
| Date/Time (PST) | Inflow | Date/Time (PST) | Inflow |
| 2026-01-31 00:00 | 142080 | 2026-01-31 22:00 | 133618.09 |
| 2026-01-30 00:00 | 143200 | 2026-02-01 04:00 | 129005.81 |
| 2026-01-29 00:00 | 129070 | 2026-02-01 10:00 | 125481.36 |
| 2026-01-28 00:00 | 145710 | 2026-02-01 16:00 | 122932.11 |
| 2026-01-27 00:00 | 152550 | 2026-02-01 22:00 | 121500.72 |
| 2026-01-26 00:00 | 150970 | 2026-02-02 04:00 | 124943.43 |
| 2026-01-25 00:00 | 148540 | 2026-02-02 10:00 | 133226.79 |
| 2026-01-24 00:00 | 140670 | 2026-02-02 16:00 | 139149.98 |
| 2026-01-23 00:00 | 142290 | 2026-02-02 22:00 | 140890.35 |
| 2026-01-22 00:00 | 154900 | 2026-02-03 04:00 | 141175.54 |
| 2026-01-21 00:00 | 152450 | 2026-02-03 10:00 | 141287.09 |
| 2026-02-03 16:00 | 141322.42 | ||
| 2026-02-03 22:00 | 141280.41 | ||
| 2026-02-04 04:00 | 141205.95 | ||
| 2026-02-04 10:00 | 141123.52 | ||
| 2026-02-04 16:00 | 141041.67 | ||
| 2026-02-04 22:00 | 140967.27 | ||
| 2026-02-05 04:00 | 140911.68 | ||
| 2026-02-05 10:00 | 140878.17 | ||
| 2026-02-05 16:00 | 140858.7 | ||
| 2026-02-05 22:00 | 140848.62 | ||
| 2026-02-06 04:00 | 140854.46 | ||
| 2026-02-06 10:00 | 140876.63 | ||
| 2026-02-06 16:00 | 140906.37 | ||
| 2026-02-06 22:00 | 140939.53 | ||
| 2026-02-07 04:00 | 140982.86 | ||
| 2026-02-07 10:00 | 141035.23 | ||
| 2026-02-07 16:00 | 141088.24 | ||
| 2026-02-07 22:00 | 141149.81 | ||
| 2026-02-08 04:00 | 141285.96 | ||
| 2026-02-08 10:00 | 141533.86 | ||
| 2026-02-08 16:00 | 141834.32 | ||
| 2026-02-08 22:00 | 142162.45 | ||
| 2026-02-09 04:00 | 142533.31 | ||
| 2026-02-09 10:00 | 142869.54 | ||
| 2026-02-09 16:00 | 143075.58 | ||
| 2026-02-09 22:00 | 143150.48 | ||
| 2026-02-10 04:00 | 143098.02 | ||