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YAKIMA--AT KIONA
   State:  Washington    County:  YAKIMA
   Latitude:  46 15' 11" North    Longitude:  119 28' 37" West
   Elevation:  454 feet
   Supporting WFO:  Pendleton    
   Action Stage:  11'   Flood Stage:  13'   Moderate Flood Stage:  14.5'
   Major Flood Stage:  16'

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--AT KIONA   (KIOW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-14
 Forecast Period: May 14 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 4.53 2845 2025-05-16
90 % 4.63 2974 2025-05-28
70 % 4.92 3370 2025-05-28
50 % 5.12 3636 2025-05-30
30 % 5.34 3953 2025-06-02
10 % 5.87 4730 2025-06-14
05 % 6.27 5334 2025-06-21

Peakflow exceedence plot for KIOW1

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