Peakflow Forecasts Header

SKOOKUMCHUCK--NEAR BUCODA
   State:  Washington    County:  THURSTON
   Latitude:  46 46' 19" North    Longitude:  122 55' 25" West
   Elevation:  195 feet
   Supporting WFO:  Seattle    
   Action Stage:  209.5'   Flood Stage:  211.5'   Moderate Flood Stage:  213'
   Major Flood Stage:  215'

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.

SKOOKUMCHUCK--NEAR BUCODA   (BCDW1)
Forecasts for Water Year 2026
Ensemble Date: 2026-06-14
 Forecast Period: June 14 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 203.85 155 2026-06-14
90 % 203.85 155 2026-06-14
70 % 203.85 155 2026-06-14
50 % 203.85 155 2026-06-14
30 % 203.85 155 2026-06-14
10 % 203.85 156 2026-06-20
05 % 203.96 180 2026-08-31

Peakflow exceedence plot for BCDW1

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