Peakflow Forecasts Header

WHITE SALMON--NEAR UNDERWOOD
   State:  Washington    County:  KLICKITAT
   Latitude:  45 45' 0" North    Longitude:  121 32' 0" West
   Elevation:  113 feet
   Supporting WFO:  Pendleton    

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.

WHITE SALMON--NEAR UNDERWOOD   (UNDW1)
Forecasts for Water Year
2027
Ensemble Date: 2026-10-10
Forecast Period: October 10 to February 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.86 810 2026-11-24
90 % 4.12 1035 2026-12-07
70 % 5.00 2030 2026-12-27
50 % 5.35 2528 2027-01-07
30 % 5.71 3016 2027-01-16
10 % 6.88 4210 2027-01-31
05 % 8.59 6566 2027-01-31

Peakflow exceedence plot for UNDW1

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