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 August 30, 2026
Mean Stage: 1.84 ft  Mean Flow: 361 cfs
Max Stage: 4.61 ft  Max Flow: 2040 cfs (1964)
Min Stage:  0.83 ft   Min Flow: 121 cfs (2003)

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