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Local weather forecast by
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Weather Forecast Office Portland, OR
Northwest River Forecast Center
River at a Glance
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
NOTE: Gauge reading affected by ocean tides.
Forecasts for the Willamette River at Portland are issued routinely year-round.
Scale to Flood Categories
Return to Area Map
Flood Categories (in feet)
Major Flood Stage:
Moderate Flood Stage:
(1) 33.00 ft on 06/07/1894
(2) 30.00 ft on 06/14/1948
(3) 30.00 ft on 06/01/1948
(4) 29.80 ft on 12/25/1964
(5) 28.70 ft on 02/06/1890
Show More Historical Crests
: Preliminary values subject to further review.
Low Water Records
(1) -2.20 ft on 12/08/1990
(2) -0.58 ft on 07/14/2001
(3) -0.51 ft on 10/10/2001
Show More Low Water Records
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos
If you notice any errors in the below information, please contact our
Above 30.0 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.
At 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.
Above 27.0 ft, Expect flooding of Front Street near the Burnside Bridge.
Above 26.0 ft, Expect flooding of numerous structures along the Willamette river from Oregon city to the confluence with the Columbia.
Above 24.0 ft, Expect localized flooding in the Northwest Portland industrial area.
Above 22.0 ft, Expect minor localized flooding along the Willamette from Oregon City to the confluence with the Columbia.
Above 18.0 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.
About This Location
Latitude: 45.518333° N, Longitude: 122.671111° W, Horizontal Datum: NAD83/WGS84
Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
Older USGS topographic maps, NGVD29 benchmarks
Older USGS topographic maps, MSL benchmarks
Low Water Alerts are issued for stages below 1.0'
Archived/Historical Data at USACE DataQuery
10-day Forecast/Trend, Northwest River Forecast Center
River Forecast Centers
River Stage Summary
Text Table Temp & Precip Forecasts
3-Day Detailed Precip Forecast
10-Day Temp & Precip Outlook
Lewis River Reservoir Data - updated hourly
Lower Columbia Reservoir and River conditions
COE real-time and archived data
USGS WaterWatch Oregon
USGS WaterWatch Washington
USGS River Temperatures & Water Quality Oregon
USGS River Temperatures & Water Quality Washington
Oregon Water Resources Dept - Surface Water Data
NWS Precipitation and River Forecasting
AHPS Iframes for Developers
Mobile iNWS for emergency management
AHPS Web Brochure
NRCS SNOTEL data map interface
Willamette Valley Reservoirs
USBR PacNW Reservoirs
Oregon Drought Information
Nationa Drought Information
USGS Oregon Water Science Center
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details,
please click here
National Weather Service
Portland Weather Forecast Office
5241 NE 122nd Avenue
Portland, OR 97230-1089
Page last modified: 5-Aug-2014 6:36 PM