SF STILLAGUAMISH − NEAR GRANITE FALLS (GFLW1)
   State:  Washington
   County:  Snohomish
   Latitude:  48 6' 13" North
   Longitude:  121 56' 44" West
   Elevation:  310 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for GFLW1

   Action Stage:  
12.9 ft
   Flood Stage:  
14 ft
   Moderate Flood Stage:  
16 ft
   Major Flood Stage:  
18 ft
Daily Historical Statistics for September 24, 2023
Mean Stage: 4.71 ft  Mean Flow: 508 cfs
Max Stage: 6.71 ft  Max Flow: 2380 cfs (1969)
Min Stage:  3.74 ft   Min Flow: 75 cfs (1938)

Statistics based on water years: 1928-1980
* statistics estimated based on current rating

Record Stage: 
22.82 ft
Record Flow: 
32400 cfs
Date of Record: 
November 13, 1932

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

Hydrograph plot for GFLW1


For Data Used In Plot   "label