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 July 01, 2025
Mean Flow: 12500 cfs
Max Flow: 22400 cfs (2022)
Min Flow: 7230 cfs (1987)

Statistics based on water years: 1973-2024
* 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


For Data Used In Plot   "label


Hydrograph plot for PRTO3


For Data Used In Plot   "label