COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-05-13 11:07 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-05-13 00:00 | 145910 | 2026-05-13 17:00 | 163089.95 |
| 2026-05-12 00:00 | 152510 | 2026-05-13 23:00 | 163751.5 |
| 2026-05-11 00:00 | 131320 | 2026-05-14 05:00 | 163998.46 |
| 2026-05-10 00:00 | 166580 | 2026-05-14 11:00 | 164048.43 |
| 2026-05-09 00:00 | 119980 | 2026-05-14 17:00 | 163879.75 |
| 2026-05-08 00:00 | 138120 | 2026-05-14 23:00 | 163572.97 |
| 2026-05-07 00:00 | 129650 | 2026-05-15 05:00 | 163219.83 |
| 2026-05-06 00:00 | 170980 | 2026-05-15 11:00 | 162860.34 |
| 2026-05-05 00:00 | 157800 | 2026-05-15 17:00 | 162489.91 |
| 2026-05-04 00:00 | 155460 | 2026-05-15 23:00 | 162097.02 |
| 2026-05-03 00:00 | 161910 | 2026-05-16 05:00 | 161668.27 |
| 2026-05-16 11:00 | 161182.1 | ||
| 2026-05-16 17:00 | 160633.03 | ||
| 2026-05-16 23:00 | 160038.22 | ||
| 2026-05-17 05:00 | 159421.16 | ||
| 2026-05-17 11:00 | 158807.28 | ||
| 2026-05-17 17:00 | 158212.14 | ||
| 2026-05-17 23:00 | 157644.2 | ||
| 2026-05-18 05:00 | 157106.12 | ||
| 2026-05-18 11:00 | 156599.18 | ||
| 2026-05-18 17:00 | 156125.63 | ||
| 2026-05-18 23:00 | 155691.24 | ||
| 2026-05-19 05:00 | 155320.94 | ||
| 2026-05-19 11:00 | 155040.27 | ||
| 2026-05-19 17:00 | 154817.99 | ||
| 2026-05-19 23:00 | 154621.52 | ||
| 2026-05-20 05:00 | 154484.27 | ||
| 2026-05-20 11:00 | 154398.71 | ||
| 2026-05-20 17:00 | 154316.5 | ||
| 2026-05-20 23:00 | 154271.48 | ||
| 2026-05-21 05:00 | 154346.04 | ||
| 2026-05-21 11:00 | 154502.43 | ||
| 2026-05-21 17:00 | 154658.43 | ||
| 2026-05-21 23:00 | 154848.83 | ||
| 2026-05-22 05:00 | 155125.24 | ||
| 2026-05-22 11:00 | 155415.12 | ||
| 2026-05-22 17:00 | 155642.43 | ||
| 2026-05-22 23:00 | 155915.56 | ||
| 2026-05-23 05:00 | 156363.57 | ||