COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed | Forecast/Trend Issued: 2026-04-13 15:47 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-04-13 00:00 | 145380 | 2026-04-13 23:00 | 135153.95 |
| 2026-04-12 00:00 | 120480 | 2026-04-14 05:00 | 132974.73 |
| 2026-04-11 00:00 | 128010 | 2026-04-14 11:00 | 131994.86 |
| 2026-04-10 00:00 | 105880 | 2026-04-14 17:00 | 131841.83 |
| 2026-04-09 00:00 | 112560 | 2026-04-14 23:00 | 132008.42 |
| 2026-04-08 00:00 | 99820 | 2026-04-15 05:00 | 132299.73 |
| 2026-04-07 00:00 | 119230 | 2026-04-15 11:00 | 132734.74 |
| 2026-04-06 00:00 | 118820 | 2026-04-15 17:00 | 132994.31 |
| 2026-04-05 00:00 | 119370 | 2026-04-15 23:00 | 133038.16 |
| 2026-04-04 00:00 | 122950 | 2026-04-16 05:00 | 133103.78 |
| 2026-04-03 00:00 | 117210 | 2026-04-16 11:00 | 133357.33 |
| 2026-04-16 17:00 | 133712.77 | ||
| 2026-04-16 23:00 | 133941.51 | ||
| 2026-04-17 05:00 | 133843.49 | ||
| 2026-04-17 11:00 | 133424.04 | ||
| 2026-04-17 17:00 | 132863.04 | ||
| 2026-04-17 23:00 | 132307.56 | ||
| 2026-04-18 05:00 | 131895.66 | ||
| 2026-04-18 11:00 | 132035.22 | ||
| 2026-04-18 17:00 | 133186.9 | ||
| 2026-04-18 23:00 | 135063.89 | ||
| 2026-04-19 05:00 | 136709.59 | ||
| 2026-04-19 11:00 | 137526.12 | ||
| 2026-04-19 17:00 | 137604.39 | ||
| 2026-04-19 23:00 | 137308.52 | ||
| 2026-04-20 05:00 | 137038.96 | ||
| 2026-04-20 11:00 | 137047.84 | ||
| 2026-04-20 17:00 | 137287.19 | ||
| 2026-04-20 23:00 | 137662.7 | ||
| 2026-04-21 05:00 | 138775.6 | ||
| 2026-04-21 11:00 | 140637.85 | ||
| 2026-04-21 17:00 | 142055.53 | ||
| 2026-04-21 23:00 | 142696.4 | ||
| 2026-04-22 05:00 | 142731.58 | ||
| 2026-04-22 11:00 | 142463.81 | ||
| 2026-04-22 17:00 | 142473.19 | ||
| 2026-04-22 23:00 | 142821.76 | ||
| 2026-04-23 05:00 | 143290.37 | ||