NF STILLAGUAMISH − NEAR ARLINGTON (ARGW1)
   State:  Washington
   County:  Snohomish
   Latitude:  48 15' 38" North
   Longitude:  122 2' 51" West
   Elevation:  89 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for ARGW1
   


   Action Stage:  
10.7 ft
   Flood Stage:  
13 ft
   Moderate Flood Stage:  
14 ft
   Major Flood Stage:  
15 ft
Daily Historical Statistics for August 17, 2026
Mean Stage: 1.86 ft  Mean Flow: 379 cfs
Max Stage: 2.95 ft  Max Flow: 1160 cfs (1950)
Min Stage:  1.35 ft   Min Flow: 170 cfs (1938)

Statistics based on water years: 1928-2024
* statistics estimated based on current rating

Record Stage: 
15.59 ft
Record Flow: 
49400 cfs
Date of Record: 
January 8, 2009

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for ARGW1

Data Used In Plot   "label   USGS Observations