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COLUMBIA - BLO ROCK ISLAND DAM (RISW1) Forecasts for Water Year 2027 |
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Natural Forecast
ESP with 10 Days QPF Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast | |||||
| Forecasts Are in KAF | 30 Year Average (1991-2020) | ||||
| 90 % | 50 % | % Average |
10 % | ||
| APR-SEP | 47681 | 58700 | 86 | 78294 | 68217 |
| APR-JUL | 37641 | 47059 | 82 | 61161 | 57718 |
| APR-AUG | 44177 | 54267 | 84 | 72760 | 64240 |
| JAN-SEP | 53980 | 65838 | 85 | 85511 | 77883 |
| JAN-JUL | 44608 | 54416 | 81 | 69218 | 67384 |
| OCT-SEP | 60340 | 72428 | 82 | 91763 | 87957 |
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Experimental
HEFS with 15 days EQPF Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast | |||||
| APR-SEP | 47954 | 59597 | 87 | 78803 | 68217 |
| APR-JUL | 38024 | 47436 | 82 | 61439 | 57718 |
| APR-AUG | 44427 | 55075 | 86 | 72942 | 64240 |
| JAN-SEP | 54310 | 65794 | 84 | 86793 | 77883 |
| JAN-JUL | 44926 | 54970 | 82 | 69872 | 67384 |
| OCT-SEP | 60987 | 74059 | 84 | 93361 | 87957 |
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Reference
ESP with 0 Days QPF Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast | |||||
| APR-SEP | 50012 | 60379 | 89 | 79552 | 68217 |
| APR-JUL | 39108 | 48311 | 84 | 62310 | 57718 |
| APR-AUG | 46181 | 55724 | 87 | 73533 | 64240 |
| JAN-SEP | 56604 | 67986 | 87 | 88559 | 77883 |
| JAN-JUL | 46234 | 56331 | 84 | 70913 | 67384 |
| OCT-SEP | 63184 | 76020 | 86 | 95320 | 87957 |
| Move the mouse over the desired "Forecast Period" to display a graph. | |||||
APR-SEP
