Peakflow Forecasts Header

KACHESS--KACHESS DAM
   State:  Washington    County:  KITTITAS
   Latitude:  47 16' 0" North    Longitude:  121 12' 0" West
   Elevation:  2269 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.

KACHESS--KACHESS DAM   (KADW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-08
Forecast Period: July 8 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 68 2025-07-26
90 % 86 2025-09-20
70 % 210 2025-10-18
50 % 434 2025-10-23
30 % 756 2025-10-29
10 % 1677 2025-10-31
05 % 2253 2025-11-01

Peakflow exceedence plot for KADW1

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