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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: 2026-10-13 Issued: 2026-10-13 Hide Forecast | |||||
| Forecasts Are in KAF | 30 Year Average (1991-2020) | ||||
| 90 % | 50 % | % Average |
10 % | ||
| APR-SEP | 49487 | 60508 | 91 | 78664 | 66718 |
| APR-JUL | 38901 | 47834 | 85 | 61598 | 56343 |
| APR-AUG | 45698 | 55840 | 89 | 72683 | 62785 |
| JAN-SEP | 56032 | 67613 | 89 | 87365 | 76041 |
| JAN-JUL | 46020 | 55276 | 84 | 70152 | 65667 |
| OCT-SEP | 62882 | 75460 | 88 | 94227 | 85780 |
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Experimental
HEFS with 15 days EQPF Ensemble: 2026-10-13 Issued: 2026-10-13 Hide Forecast | |||||
| APR-SEP | 49262 | 60635 | 91 | 78138 | 66718 |
| APR-JUL | 38826 | 47675 | 85 | 61532 | 56343 |
| APR-AUG | 45525 | 55574 | 89 | 72194 | 62785 |
| JAN-SEP | 55843 | 67840 | 89 | 86946 | 76041 |
| JAN-JUL | 45850 | 55450 | 84 | 69611 | 65667 |
| OCT-SEP | 63134 | 75923 | 89 | 94440 | 85780 |
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Reference
ESP with 0 Days QPF Ensemble: 2026-10-13 Issued: 2026-10-13 Hide Forecast | |||||
| APR-SEP | 51355 | 63537 | 95 | 80327 | 66718 |
| APR-JUL | 40080 | 50245 | 89 | 63136 | 56343 |
| APR-AUG | 47310 | 58371 | 93 | 74464 | 62785 |
| JAN-SEP | 57708 | 70261 | 92 | 88290 | 76041 |
| JAN-JUL | 47278 | 58043 | 88 | 71366 | 65667 |
| OCT-SEP | 64894 | 78819 | 92 | 95925 | 85780 |
| Move the mouse over the desired "Forecast Period" to display a graph. | |||||
APR-SEP
