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COLUMBIA - BLO ROCK ISLAND DAM (RISW1) Forecasts for Water Year 2026 |
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Natural Forecast
ESP with 10 Days QPF Ensemble: 2025-10-22 Issued: 2025-10-22 Hide Forecast | |||||
| Forecasts Are in KAF | 30 Year Average (1991-2020) | ||||
| 90 % | 50 % | % Average |
10 % | ||
| APR-SEP | 52317 | 64155 | 94 | 83495 | 68217 |
| APR-JUL | 41914 | 51509 | 89 | 65556 | 57718 |
| JAN-SEP | 59406 | 71415 | 92 | 92211 | 77883 |
| JAN-JUL | 49196 | 59856 | 89 | 74640 | 67384 |
| OCT-SEP | 66608 | 79714 | 91 | 99348 | 87957 |
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Experimental
HEFS with 15 days EQPF Ensemble: 2025-10-22 Issued: 2025-10-22 Hide Forecast | |||||
| APR-SEP | 52558 | 63457 | 93 | 82585 | 68217 |
| APR-JUL | 41820 | 50541 | 88 | 65034 | 57718 |
| JAN-SEP | 59291 | 71105 | 91 | 92003 | 77883 |
| JAN-JUL | 49261 | 58837 | 87 | 74002 | 67384 |
| OCT-SEP | 66282 | 80589 | 92 | 99567 | 87957 |
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Reference
ESP with 0 Days QPF Ensemble: 2025-10-22 Issued: 2025-10-22 Hide Forecast | |||||
| APR-SEP | 51294 | 62377 | 91 | 81001 | 68217 |
| APR-JUL | 40869 | 49889 | 86 | 63983 | 57718 |
| JAN-SEP | 58144 | 70356 | 90 | 90690 | 77883 |
| JAN-JUL | 48030 | 58034 | 86 | 72856 | 67384 |
| OCT-SEP | 64853 | 79085 | 90 | 97677 | 87957 |
| Move the mouse over the desired "Forecast Period" to display a graph. | |||||
APR-SEP
