COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-06-01 16:14 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-06-01 00:00 | 141410 | 2026-06-02 05:00 | 182024.12 |
| 2026-05-31 00:00 | 114500 | 2026-06-02 11:00 | 182307.22 |
| 2026-05-30 00:00 | 143150 | 2026-06-02 17:00 | 182129.7 |
| 2026-05-29 00:00 | 139970 | 2026-06-02 23:00 | 182004.08 |
| 2026-05-28 00:00 | 128500 | 2026-06-03 05:00 | 181970.02 |
| 2026-05-27 00:00 | 138760 | 2026-06-03 11:00 | 181984.14 |
| 2026-05-26 00:00 | 135220 | 2026-06-03 17:00 | 182013.1 |
| 2026-05-24 00:00 | 120770 | 2026-06-03 23:00 | 182055.14 |
| 2026-05-23 00:00 | 138590 | 2026-06-04 05:00 | 182120.14 |
| 2026-05-22 00:00 | 146050 | 2026-06-04 11:00 | 182151.54 |
| 2026-06-04 17:00 | 182142 | ||
| 2026-06-04 23:00 | 182111.9 | ||
| 2026-06-05 05:00 | 182086.5 | ||
| 2026-06-05 11:00 | 182076.5 | ||
| 2026-06-05 17:00 | 182077.8 | ||
| 2026-06-05 23:00 | 182087.62 | ||
| 2026-06-06 05:00 | 182097.74 | ||
| 2026-06-06 11:00 | 182097.04 | ||
| 2026-06-06 17:00 | 182067.74 | ||
| 2026-06-06 23:00 | 181987.9 | ||
| 2026-06-07 05:00 | 181846.7 | ||
| 2026-06-07 11:00 | 181652.18 | ||
| 2026-06-07 17:00 | 183412.42 | ||
| 2026-06-07 23:00 | 187332.8 | ||
| 2026-06-08 05:00 | 190004.9 | ||
| 2026-06-08 11:00 | 190578.94 | ||
| 2026-06-08 17:00 | 190408.74 | ||
| 2026-06-08 23:00 | 190170.22 | ||
| 2026-06-09 05:00 | 189962.62 | ||
| 2026-06-09 11:00 | 189804.62 | ||
| 2026-06-09 17:00 | 189688.76 | ||
| 2026-06-09 23:00 | 189607.24 | ||
| 2026-06-10 05:00 | 189550.22 | ||
| 2026-06-10 11:00 | 189488.76 | ||
| 2026-06-10 17:00 | 189397.64 | ||
| 2026-06-10 23:00 | 189298.26 | ||
| 2026-06-11 05:00 | 189220.34 | ||