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| CHEHALIS--NEAR GRAND MOUND | |
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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. |
| CHEHALIS--NEAR GRAND MOUND (CGMW1) Forecasts for Water Year 2022 Ensemble Date: 2021-12-07 Forecast Period: December 7 to April 1 | |||
| Exceedence Probability | Stage feet | Discharge CFS | Probable Date of Peak |
| 95 % | 138.18 | 12119 | 2021-12-13 |
| 90 % | 138.18 | 12119 | 2021-12-13 |
| 70 % | 140.50 | 18064 | 2021-12-31 |
| 50 % | 142.03 | 22827 | 2022-01-12 |
| 30 % | 142.64 | 27068 | 2022-01-25 |
| 10 % | 144.96 | 48399 | 2022-02-20 |
| 05 % | 145.88 | 59521 | 2022-03-03 |
