GREEN − NEAR PALMER (GPUW1)
   State:  Washington
   County:  King
   Latitude:  47 18' 0" North
   Longitude:  121 51' 0" West
   Elevation:  860 ft

   Supporting NWS Forecast Office: WFO Seattle

   
Click for NWS Official River Forecasts for GPUW1
   

Daily Historical Statistics for April 16, 2026
Mean Stage: 6.17 ft  Mean Flow: 1330 cfs
Max Stage: 8.41 ft  Max Flow: 3380 cfs (2002)
Min Stage:  3.78 ft   Min Flow: 255 cfs (1992)

Statistics based on water years: 1964-2024
* 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 GPUW1

Data Used In Plot   "label   USGS Observations