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: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 21.16 3034 2025-05-24
90 % 21.27 3247 2025-05-26
70 % 21.62 3907 2025-06-01
50 % 21.85 4330 2025-06-03
30 % 22.20 5010 2025-06-07
10 % 22.67 5954 2025-06-17
05 % 23.03 6674 2025-06-21

Peakflow exceedence plot for STHW1

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