WILLAMETTE − AT PORTLAND (PRTO3)
   State:  Oregon
   County:  Multnomah
   Latitude:  45 31' 5" North
   Longitude:  122 40' 15" West
   Elevation:  2 ft

   Supporting NWS Forecast Office: WFO Portland
   Click for NWS Official River Forecasts for PRTO3

   Action Stage:  17 ft
   Flood Stage:  18 ft
   Moderate Flood Stage:  24 ft
   Major Flood Stage:  28 ft
Daily Historical Statistics for January 09, 2026
Mean Flow: 65200 cfs
Max Flow: 160000 cfs (1983)
Min Flow: 7880 cfs (1977)

Statistics based on water years: 1973-2025
* statistics estimated based on current rating

Record Stage: 33 ft
Date of Record: June 7, 1894

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

Hydrograph plot for PRTO3


For Data Used In Plot   "label


Hydrograph plot for PRTO3


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Hydrograph plot for PRTO3


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