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| NISQUALLY--ALDER RESERVOIR | |
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| Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks. |
| NISQUALLY--ALDER RESERVOIR (ALRW1) Forecasts for Water Year 2025 Ensemble Date: 2025-05-12 Forecast Period: May 12 to September 1 | |||
| Exceedence Probability | Inflow CFS | Probable Date of Peak | |
| 95 % | 1299 | 2025-05-24 | |
| 90 % | 1430 | 2025-05-26 | |
| 70 % | 1586 | 2025-06-01 | |
| 50 % | 2380 | 2025-06-05 | |
| 30 % | 2795 | 2025-06-13 | |
| 10 % | 4906 | 2025-06-27 | |
| 05 % | 5823 | 2025-07-11 | |
