Peakflow Forecasts Header

SF NOOKSACK--AT SAXON BRIDGE
   State:  Washington    County:  WHATCOM
   Latitude:  48 40' 39" North    Longitude:  122 9' 56" West
   Elevation:  380 feet
   Supporting WFO:  Seattle    
   Action Stage:  6.9'   Flood Stage:  8'   Moderate Flood Stage:  8.5'
   Major Flood Stage:  9.5'

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.

SF NOOKSACK--AT SAXON BRIDGE   (NSSW1)
Forecasts for Water Year 2026
Ensemble Date: 2026-04-18
 Forecast Period: April 18 to August 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.20 1265 2026-04-23
90 % 2.20 1265 2026-04-23
70 % 2.46 1570 2026-05-05
50 % 2.61 1762 2026-05-14
30 % 2.90 2179 2026-05-27
10 % 3.71 3565 2026-06-14
05 % 4.14 4300 2026-07-02

Peakflow exceedence plot for NSSW1

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