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COLUMBIA - JOHN DAY DAM (JDAO3) 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 | 65799 | 83336 | 88 | 109862 | 94749 |
| APR-JUL | 54039 | 69692 | 85 | 88156 | 81538 |
| APR-AUG | 61321 | 78491 | 88 | 101732 | 89527 |
| JAN-SEP | 76786 | 96310 | 85 | 129176 | 113078 |
| JAN-JUL | 64922 | 82215 | 82 | 107469 | 99868 |
| OCT-SEP | 85951 | 106094 | 83 | 140684 | 128097 |
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Experimental
HEFS with 15 days EQPF Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast | |||||
| APR-SEP | 65960 | 84132 | 89 | 109796 | 94749 |
| APR-JUL | 53867 | 70007 | 86 | 88438 | 81538 |
| APR-AUG | 61647 | 78784 | 88 | 101679 | 89527 |
| JAN-SEP | 77849 | 97410 | 86 | 129316 | 113078 |
| JAN-JUL | 65853 | 84096 | 84 | 107680 | 99868 |
| OCT-SEP | 87323 | 107257 | 84 | 140944 | 128097 |
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Reference
ESP with 0 Days QPF Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast | |||||
| APR-SEP | 67904 | 85656 | 90 | 110461 | 94749 |
| APR-JUL | 55074 | 71759 | 88 | 89936 | 81538 |
| APR-AUG | 63545 | 80788 | 90 | 102818 | 89527 |
| JAN-SEP | 80018 | 98074 | 87 | 129901 | 113078 |
| JAN-JUL | 67848 | 84148 | 84 | 108119 | 99868 |
| OCT-SEP | 90054 | 110536 | 86 | 141874 | 128097 |
| Move the mouse over the desired "Forecast Period" to display a graph. | |||||
APR-SEP
