Peakflow Forecasts Header

KETTLE--NEAR FERRY
   State:  Washington    County:  FERRY
   Latitude:  48 58' 53" North    Longitude:  118 45' 55" West
   Elevation:  1837 feet
   Supporting WFO:  Spokane    
   Action Stage:  17.5'   Flood Stage:  18.5'   Moderate Flood Stage:  19.5'
   Major Flood Stage:  20.5'

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.

KETTLE--NEAR FERRY   (FRYW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-12
 Forecast Period: May 12 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 15.28 7466 2025-05-14
90 % 15.28 7466 2025-05-14
70 % 15.28 7466 2025-05-14
50 % 15.43 7758 2025-05-28
30 % 15.94 8833 2025-06-07
10 % 16.54 10147 2025-06-20
05 % 16.92 11027 2025-06-27

Peakflow exceedence plot for FRYW1

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