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: 2026-07-20
 Forecast Period: July 20 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 4.51 45 2026-08-27
90 % 4.66 58 2026-09-13
70 % 5.56 185 2026-10-20
50 % 6.16 322 2026-10-25
30 % 7.01 550 2026-10-28
10 % 8.47 1077 2026-10-31
05 % 9.09 1356 2026-11-01

Peakflow exceedence plot for SMRW1

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