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 July 13, 2026
Mean Stage: 6.75 ft  Mean Flow: 221 cfs
Max Stage: 8.11 ft  Max Flow: 904 cfs (1964)
Min Stage:  5.90 ft   Min Flow: 54 cfs (2015)

Statistics based on water years: 1962-2025
* 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