MF SNOQUALMIE − NEAR TANNER (TANW1)
   State:  Washington
   County:  King
   Latitude:  47 29' 0" North
   Longitude:  121 39' 0" West
   Elevation:  780 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for TANW1
   

Daily Historical Statistics for May 09, 2026
Mean Stage: 4.27 ft  Mean Flow: 1740 cfs
Max Stage: 7.06 ft  Max Flow: 5250 cfs (2018)
Min Stage:  2.26 ft   Min Flow: 507 cfs (2015)

Statistics based on water years: 1961-2024
* 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 TANW1

Data Used In Plot   "label   USGS Observations