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WENATCHEE--AT PESHASTIN
   State:  Washington    County:  CHELAN
   Latitude:  47 35' 3" North    Longitude:  120 37' 12" West
   Elevation:  1028 feet
   Supporting WFO:  Spokane    
   Action Stage:  12'   Flood Stage:  13'   Moderate Flood Stage:  14'
   Major Flood Stage:  15'

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.

WENATCHEE--AT PESHASTIN   (PESW1)
Forecasts for Water Year 2027
Ensemble Date: 2026-10-09
 Forecast Period: October 9 to February 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.17 725 2026-11-01
90 % 2.76 1178 2026-11-06
70 % 4.55 3323 2026-11-18
50 % 5.31 4608 2026-12-03
30 % 6.09 6121 2027-01-05
10 % 8.60 11729 2027-01-27
05 % 10.39 16424 2027-01-31

Peakflow exceedence plot for PESW1

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