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| COWLITZ--NEAR KOSMOS | |
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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. |
| COWLITZ--NEAR KOSMOS (COKW1) Forecasts for Water Year 2027 Ensemble Date: 2026-10-05 Forecast Period: October 5 to February 1 | |||
| Exceedence Probability | Stage feet | Discharge CFS | Probable Date of Peak |
| 95 % | 68.31 | 5086 | 2026-11-09 |
| 90 % | 71.26 | 9953 | 2026-11-17 |
| 70 % | 73.77 | 15239 | 2026-12-04 |
| 50 % | 76.81 | 23533 | 2026-12-21 |
| 30 % | 79.43 | 32393 | 2027-01-09 |
| 10 % | 82.39 | 44536 | 2027-01-26 |
| 05 % | 84.99 | 57147 | 2027-01-30 |
