Major Flood
28 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
24 ft
Minor Flood
18 ft
Action Stage
17 ft
What Floods at Each Level
30 ft
expect flooding of downtown Portland from Park Ave east to the Willamette and north of Burnside. Historically, Union Station begins to flood at this point and rail traffic will likely be impacted. Expect flooding of Oaks Park, along with moorages and industrial areas from Oregon City through downtown Portland into industrial NW Portland.
28.8 ft
expect the river level to reach the top of the lowest point of the downtown Portland sea-wall. Flooding of some portions of Waterfront Park is possible at this and higher stages.
27 ft
expect flooding of Front Street near the Burnside Bridge.
26 ft
expect flooding of numerous structures along the Willamette river from Oregon city to the confluence with the Columbia.
24 ft
expect localized flooding in the Northwest Portland industrial area.
22 ft
expect minor localized flooding along the Willamette from Oregon City to the confluence with the Columbia.
18 ft
expect minor flooding of localized areas along the lower willamette. Flooding is mainly confined to the islands on the willamette river from oregon city to the confluence with the columbia.
17 ft
expect flooding of some low spots of trails along the west and east banks of the Willamette in and near downtown Portland.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jun 6, 1894 | 33 ft | -9,999 cfs |
| May 31, 1948 | 30 ft | — |
| Jun 13, 1948 | 30 ft | — |
About This Gauge
USGS Site
NWS LID
PRTO3
River
Willamette River
County
Multnomah, OR
Coordinates
45.5183°N, 122.6711°W
Get Flood Alerts for Willamette River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Willamette River at Portland?
The Willamette River at Portland gauge is maintained by USGS (site 14211720) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Willamette River at Portland?
The NWS-defined flood stage for Willamette River at Portland is 18 feet. Action stage begins at 17 feet. Moderate flooding starts at 24 feet, and major flooding at 28 feet.
How do I get alerts when Willamette River rises?
Download StormCast free on Google Play, go to River Gauges, and add Willamette River at Portland to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Willamette River at Portland gauge located?
The gauge is located in Multnomah County, Oregon at coordinates 45.5183°N, 122.6711°W. USGS site number: 14211720. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- Gauge reading affected by ocean tides.