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| JOHN DAY--AT SERVICE CK | |
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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. |
| JOHN DAY--AT SERVICE CK (SERO3) Forecasts for Water Year 2026 Ensemble Date: 2026-09-10 Forecast Period: September 10 to January 1 | |||
| Exceedence Probability | Stage feet | Discharge CFS | Probable Date of Peak |
| 95 % | 2.55 | 421 | 2026-11-13 |
| 90 % | 2.73 | 507 | 2026-11-26 |
| 70 % | 3.30 | 839 | 2026-12-10 |
| 50 % | 3.97 | 1341 | 2026-12-18 |
| 30 % | 5.10 | 2465 | 2026-12-22 |
| 10 % | 7.63 | 6318 | 2026-12-31 |
| 05 % | 8.22 | 7504 | 2026-12-31 |
