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 February 11, 2026
Mean Flow:
47900 cfs
Max Flow:
311000 cfs (1996)
Min Flow:
6240 cfs (1977)
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.
Data Used In Plot
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Data Used In Plot
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Data Used In Plot
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PRTO3
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