PILCHUCK − NEAR SNOHOMISH (PILW1)
   State:  Washington
   County:  Snohomish
   Latitude:  47 56' 6" North
   Longitude:  122 4' 18" West
   Elevation:  0 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for PILW1
   


   Action Stage:  
16 ft
   Flood Stage:  
18 ft
   Moderate Flood Stage:  
20 ft
   Major Flood Stage:  
22 ft
Daily Historical Statistics for October 18, 2026
Mean Stage: 11.02 ft  Mean Flow: 348 cfs
Max Stage: 12.97 ft  Max Flow: 1530 cfs (2017)
Min Stage:  9.84 ft   Min Flow: 43 cfs (2023)

Statistics based on water years: 1993-2025
* statistics estimated based on current rating

Record Stage: 
20.39 ft

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

Hydrograph plot for PILW1

Data Used In Plot   "label   USGS Observations