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| SF BOISE--ANDERSON RANCH DAM | |
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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. |
| SF BOISE--ANDERSON RANCH DAM (ARAI1) Forecasts for Water Year 2027 Ensemble Date: 2026-10-05 Forecast Period: October 5 to February 1 | |||
| Exceedence Probability | Inflow CFS | Probable Date of Peak | |
| 95 % | 275 | 2026-10-19 | |
| 90 % | 302 | 2026-10-23 | |
| 70 % | 379 | 2026-11-01 | |
| 50 % | 433 | 2026-11-11 | |
| 30 % | 539 | 2026-12-02 | |
| 10 % | 929 | 2027-01-06 | |
| 05 % | 1805 | 2027-01-29 | |
