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| NISQUALLY--NEAR NATIONAL | |
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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. |
| NISQUALLY--NEAR NATIONAL (NISW1) Forecasts for Water Year 2026 Ensemble Date: 2026-08-16 Forecast Period: August 16 to December 1 | |||
| Exceedence Probability | Stage feet | Discharge CFS | Probable Date of Peak |
| 95 % | 5.01 | 596 | 2026-09-08 |
| 90 % | 5.72 | 1128 | 2026-10-01 |
| 70 % | 6.53 | 2018 | 2026-11-04 |
| 50 % | 7.17 | 2958 | 2026-11-12 |
| 30 % | 8.43 | 5344 | 2026-11-21 |
| 10 % | 11.00 | 12489 | 2026-11-26 |
| 05 % | 11.75 | 15176 | 2026-11-28 |
