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COLUMBIA - ROCKY REACH DAM (RRHW1) Forecasts for Water Year 2027 |
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Natural Forecast
ESP with 10 Days QPF Ensemble: 2026-10-23 Issued: 2026-10-23 Hide Forecast | |||||
| Forecasts Are in KAF | 30 Year Average (1991-2020) | ||||
| 90 % | 50 % | % Average |
10 % | ||
| APR-SEP | 46409 | 57119 | 86 | 76167 | 66718 |
| APR-JUL | 36811 | 46071 | 82 | 59441 | 56343 |
| APR-AUG | 42828 | 52619 | 84 | 70689 | 62785 |
| JAN-SEP | 51818 | 64094 | 84 | 83288 | 76041 |
| JAN-JUL | 42371 | 52936 | 81 | 67191 | 65667 |
| OCT-SEP | 57879 | 70514 | 82 | 89441 | 85780 |
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Experimental
HEFS with 15 days EQPF Ensemble: 2026-10-23 Issued: 2026-10-23 Hide Forecast | |||||
| APR-SEP | 46035 | 57894 | 87 | 76607 | 66718 |
| APR-JUL | 36540 | 45555 | 81 | 59813 | 56343 |
| APR-AUG | 42596 | 53494 | 85 | 70912 | 62785 |
| JAN-SEP | 52122 | 63869 | 84 | 84713 | 76041 |
| JAN-JUL | 42987 | 53349 | 81 | 67970 | 65667 |
| OCT-SEP | 58488 | 70904 | 83 | 91152 | 85780 |
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Reference
ESP with 0 Days QPF Ensemble: 2026-10-23 Issued: 2026-10-23 Hide Forecast | |||||
| APR-SEP | 48602 | 59515 | 89 | 77658 | 66718 |
| APR-JUL | 38184 | 47057 | 84 | 60718 | 56343 |
| APR-AUG | 44876 | 54889 | 87 | 71714 | 62785 |
| JAN-SEP | 54995 | 66517 | 87 | 86165 | 76041 |
| JAN-JUL | 45150 | 54283 | 83 | 69098 | 65667 |
| OCT-SEP | 61480 | 74005 | 86 | 92667 | 85780 |
| Move the mouse over the desired "Forecast Period" to display a graph. | |||||
APR-SEP
