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 2026
Ensemble Date: 2026-03-14
 Forecast Period: March 14 to July 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 13.66 4519 2026-04-18
90 % 14.15 5350 2026-04-21
70 % 15.02 6948 2026-04-28
50 % 15.48 7872 2026-05-08
30 % 16.00 8953 2026-05-20
10 % 17.24 11793 2026-05-29
05 % 17.63 12710 2026-06-02

Peakflow exceedence plot for FRYW1

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