COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-04-07 10:47 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-04-07 00:00 | 119230 | 2026-04-07 23:00 | 121802.43 |
| 2026-04-06 00:00 | 118820 | 2026-04-08 05:00 | 121979.41 |
| 2026-04-05 00:00 | 119370 | 2026-04-08 11:00 | 121734.75 |
| 2026-04-04 00:00 | 122950 | 2026-04-08 17:00 | 121416.78 |
| 2026-04-03 00:00 | 117210 | 2026-04-08 23:00 | 121115.21 |
| 2026-04-02 00:00 | 124050 | 2026-04-09 05:00 | 120891.33 |
| 2026-04-01 00:00 | 144130 | 2026-04-09 11:00 | 120763.35 |
| 2026-03-31 00:00 | 146590 | 2026-04-09 17:00 | 120695.53 |
| 2026-03-30 00:00 | 122070 | 2026-04-09 23:00 | 120664.23 |
| 2026-03-29 00:00 | 148630 | 2026-04-10 05:00 | 120685.96 |
| 2026-03-28 00:00 | 154080 | 2026-04-10 11:00 | 120710.79 |
| 2026-04-10 17:00 | 120648.71 | ||
| 2026-04-10 23:00 | 120570.82 | ||
| 2026-04-11 05:00 | 120573.65 | ||
| 2026-04-11 11:00 | 120630.91 | ||
| 2026-04-11 17:00 | 120669.02 | ||
| 2026-04-11 23:00 | 120664.14 | ||
| 2026-04-12 05:00 | 120643.79 | ||
| 2026-04-12 11:00 | 120635.86 | ||
| 2026-04-12 17:00 | 121681.01 | ||
| 2026-04-12 23:00 | 124067.88 | ||
| 2026-04-13 05:00 | 126207.84 | ||
| 2026-04-13 11:00 | 127531.68 | ||
| 2026-04-13 17:00 | 128538.13 | ||
| 2026-04-13 23:00 | 129480.48 | ||
| 2026-04-14 05:00 | 130350.19 | ||
| 2026-04-14 11:00 | 131106.41 | ||
| 2026-04-14 17:00 | 131731.23 | ||
| 2026-04-14 23:00 | 132238.57 | ||
| 2026-04-15 05:00 | 132656.22 | ||
| 2026-04-15 11:00 | 133004.18 | ||
| 2026-04-15 17:00 | 133291.67 | ||
| 2026-04-15 23:00 | 133533.26 | ||
| 2026-04-16 05:00 | 133755.2 | ||
| 2026-04-16 11:00 | 133969.74 | ||
| 2026-04-16 17:00 | 134171.26 | ||
| 2026-04-16 23:00 | 134368.97 | ||
| 2026-04-17 05:00 | 134589.25 | ||