Peakflow Forecasts Header

STEHEKIN--AT STEHEKIN
   State:  Washington    County:  CHELAN
   Latitude:  48 19' 47" North    Longitude:  120 41' 26" West
   Elevation:  1099 feet
   Supporting WFO:  Spokane    
   Action Stage:  22'   Flood Stage:  24'

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.

STEHEKIN--AT STEHEKIN   (STHW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-02
Forecast Period: July 2 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 20.52 1825 2025-07-02
90 % 20.52 1825 2025-07-02
70 % 20.52 1825 2025-07-02
50 % 20.52 1825 2025-07-02
30 % 20.53 1830 2025-07-10
10 % 21.37 3438 2025-10-25
05 % 21.83 4300 2025-10-31

Peakflow exceedence plot for STHW1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon