Peakflow Forecasts Header

SAMISH--NEAR BURLINGTON
   State:  Washington    County:  SKAGIT
   Latitude:  48 32' 44" North    Longitude:  122 20' 18" West
   Elevation:  0 feet
   Supporting WFO:  Seattle    
   Action Stage:  9.99'   Flood Stage:  11.24'   Moderate Flood Stage:  15.16'
   Major Flood Stage:  18.4'

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.

SAMISH--NEAR BURLINGTON   (SMRW1)
Forecasts for Water Year 2026
Ensemble Date: 2026-04-15
 Forecast Period: April 15 to August 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 5.73 232 2026-04-16
90 % 5.73 232 2026-04-16
70 % 5.73 232 2026-04-16
50 % 6.60 445 2026-05-10
30 % 7.10 587 2026-05-23
10 % 7.59 746 2026-06-09
05 % 7.78 815 2026-06-27

Peakflow exceedence plot for SMRW1

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