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| BIG LOST--MACKAY RESERVOIR NEAR MACKAY | |
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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. |
| BIG LOST--MACKAY RESERVOIR NEAR MACKAY (MACI1) Forecasts for Water Year 2026 Ensemble Date: 2026-02-06 Forecast Period: February 6 to June 1 | |||
| Exceedence Probability | Inflow CFS | Probable Date of Peak | |
| 95 % | 1107 | 2026-04-19 | |
| 90 % | 1189 | 2026-04-26 | |
| 70 % | 1616 | 2026-05-11 | |
| 50 % | 1931 | 2026-05-24 | |
| 30 % | 2346 | 2026-05-29 | |
| 10 % | 3144 | 2026-06-01 | |
| 05 % | 3607 | 2026-06-01 | |