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COWLITZ--AT RANDLE
   State:  Washington    County:  LEWIS
   Latitude:  46 31' 57" North    Longitude:  121 57' 20" West
   Elevation:  890 feet
   Supporting WFO:  Seattle    
   Action Stage:  13.2'   Flood Stage:  18'   Moderate Flood Stage:  20'
   Major Flood Stage:  22'

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.

COWLITZ--AT RANDLE   (RAWW1)
Forecasts for Water Year 2026
Ensemble Date: 2025-11-16
 Forecast Period: November 16 to March 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 8.16 4393 2025-11-16
90 % 9.68 6338 2025-12-03
70 % 14.66 12976 2025-12-20
50 % 16.99 16167 2026-01-09
30 % 20.43 22075 2026-01-29
10 % 22.12 28664 2026-02-21
05 % 22.83 35055 2026-02-24

Peakflow exceedence plot for RAWW1

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