SF SNOQUALMIE − NEAR EDGEWICK (SFSW1)
   State:  Washington
   County:  King
   Latitude:  47 27' 10" North
   Longitude:  121 43' 0" West
   Elevation:  616 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for SFSW1
   

Daily Historical Statistics for March 15, 2026
Mean Stage: 7.53 ft  Mean Flow: 503 cfs
Max Stage: 9.67 ft  Max Flow: 2710 cfs (2017)
Min Stage:  6.31 ft   Min Flow: 120 cfs (2019)

Statistics based on water years: 1963-2025
* statistics estimated based on current rating

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

Hydrograph plot for SFSW1

Data Used In Plot   "label   USGS Observations