Peakflow Forecasts Header

CHELAN--LAKE CHELAN DAM
   State:  Washington    County:  CHELAN
   Latitude:  47 50' 11" North    Longitude:  120 3' 37" West
   Elevation:  995 feet
   Supporting WFO:  Spokane    
   Inflow Data  

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.

CHELAN--LAKE CHELAN DAM   (CHDW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 4138 2025-05-24
90 % 4596 2025-05-25
70 % 5894 2025-05-30
50 % 6712 2025-06-01
30 % 8194 2025-06-06
10 % 10004 2025-06-11
05 % 11442 2025-06-17

Peakflow exceedence plot for CHDW1

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