COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-05-07 15:45 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-05-07 00:00 | 129650 | 2026-05-07 17:00 | 133267.21 |
| 2026-05-06 00:00 | 170980 | 2026-05-07 23:00 | 148768.13 |
| 2026-05-05 00:00 | 157800 | 2026-05-08 05:00 | 165987.23 |
| 2026-05-04 00:00 | 155460 | 2026-05-08 11:00 | 171381.54 |
| 2026-05-03 00:00 | 161910 | 2026-05-08 17:00 | 171565.04 |
| 2026-05-02 00:00 | 169040 | 2026-05-08 23:00 | 171062.98 |
| 2026-05-01 00:00 | 148070 | 2026-05-09 05:00 | 170727.82 |
| 2026-04-30 00:00 | 164720 | 2026-05-09 11:00 | 170520.38 |
| 2026-04-29 00:00 | 129000 | 2026-05-09 17:00 | 170343.36 |
| 2026-04-28 00:00 | 132950 | 2026-05-09 23:00 | 170610.48 |
| 2026-04-27 00:00 | 130490 | 2026-05-10 05:00 | 171976.72 |
| 2026-05-10 11:00 | 172778.04 | ||
| 2026-05-10 17:00 | 171602.86 | ||
| 2026-05-10 23:00 | 170220.74 | ||
| 2026-05-11 05:00 | 169672.28 | ||
| 2026-05-11 11:00 | 169431.54 | ||
| 2026-05-11 17:00 | 169130.28 | ||
| 2026-05-11 23:00 | 168813.76 | ||
| 2026-05-12 05:00 | 168598.44 | ||
| 2026-05-12 11:00 | 168454.44 | ||
| 2026-05-12 17:00 | 168332 | ||
| 2026-05-12 23:00 | 168302.92 | ||
| 2026-05-13 05:00 | 168396.14 | ||
| 2026-05-13 11:00 | 168501.1 | ||
| 2026-05-13 17:00 | 168530.36 | ||
| 2026-05-13 23:00 | 168523.02 | ||
| 2026-05-14 05:00 | 168524.16 | ||
| 2026-05-14 11:00 | 168486.2 | ||
| 2026-05-14 17:00 | 168370.86 | ||
| 2026-05-14 23:00 | 168238 | ||
| 2026-05-15 05:00 | 168147.04 | ||
| 2026-05-15 11:00 | 168059.2 | ||
| 2026-05-15 17:00 | 167922.34 | ||
| 2026-05-15 23:00 | 167772 | ||
| 2026-05-16 05:00 | 167645.51 | ||
| 2026-05-16 11:00 | 167497.45 | ||
| 2026-05-16 17:00 | 167272.37 | ||
| 2026-05-16 23:00 | 166986.68 | ||
| 2026-05-17 05:00 | 166684.11 | ||