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| HENRYS FORK--ISLAND PARK 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. |
| HENRYS FORK--ISLAND PARK DAM (IPDI1) Forecasts for Water Year 2026 Ensemble Date: 2026-01-23 Forecast Period: January 23 to May 1 | |||
| Exceedence Probability | Inflow CFS | Probable Date of Peak | |
| 95 % | 535 | 2026-04-08 | |
| 90 % | 616 | 2026-04-17 | |
| 70 % | 842 | 2026-04-22 | |
| 50 % | 960 | 2026-04-25 | |
| 30 % | 1142 | 2026-04-29 | |
| 10 % | 1297 | 2026-05-01 | |
| 05 % | 1529 | 2026-05-01 | |
