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
2025
Ensemble Date: 2025-07-01
Forecast Period: July 1 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.46 55 2025-08-05
90 % 4.60 69 2025-09-01
70 % 5.51 202 2025-10-18
50 % 5.98 308 2025-10-23
30 % 6.91 547 2025-10-28
10 % 8.41 1062 2025-10-31
05 % 9.08 1354 2025-11-01

Peakflow exceedence plot for SMRW1

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