Peakflow Forecasts Header

YAKIMA--KEECHELUS LAKE
   State:  Washington    County:  KITTITAS
   Latitude:  47 19' 0" North    Longitude:  121 20' 0" West
   Elevation:  2479 feet
   Supporting WFO:  Pendleton    
   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.

YAKIMA--KEECHELUS LAKE   (KEDW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-12
Forecast Period: July 12 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 86 2025-07-12
90 % 132 2025-09-02
70 % 339 2025-10-12
50 % 657 2025-10-22
30 % 1330 2025-10-29
10 % 2672 2025-11-01
05 % 5016 2025-11-01

Peakflow exceedence plot for KEDW1

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