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This probabilistic forecast is issued by the Northwest River Forecast Center.
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About this graph
Forecasts for the Willamette River at Salem are issued routinely year-round.
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Upstream Locations Upstream Gauge
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 32
Moderate Flood Stage: 0
Flood Stage: 28
Action Stage: 21.2
Low Stage (in feet): 0

Historic Crests
(1) 47.00 ft on 12/04/1891
(2) 47.00 ft on 12/04/1861
(3) 45.10 ft on 02/05/1890
(4) 43.30 ft on 01/16/1880
(5) 37.78 ft on 12/23/1964
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(P): Preliminary values subject to further review.

Recent Crests
(1) 27.30 ft on 04/12/2019
(2) 29.42 ft on 01/21/2012
(3) 22.01 ft on 02/02/2003
(4) 22.96 ft on 11/27/1999
(5) 28.75 ft on 12/30/1998
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 3.50 ft on 09/02/1940
(2) 3.50 ft on 08/27/1940
(3) 3.60 ft on 12/01/1936
Show More Low Water Records
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Gauge LocationGauge Map Marker
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 Collapse
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37 Keizer begins to flood. Also expect major widespread flooding from Santiam confluence to Oregon City.
35 numerous roads and structures are flooded. The Willamette River also backs up water from tributary streams and creeks, which in turn produces flooding of residential neighborhoods along these creeks in Salem and Keizer.
32 expect widespread flooding. Numerous roads and structures in the Salem/Keizer vicinity are flooded. The Willow Lake Wastewater Treatment Plant is likely flooded at this level.
30 expect widespread flooding of lowland agricultural areas and rural and secondary roads. Also expect flooding along some creeks which drain into the Willamette in and near Salem due to backwater from the Willamette. The Willow Lake Wastewater Treatment Plant is threatened with flood water above this level.
28 widespread lowland flooding begins along the banks of the Willamette and islands on the mid Willamette, such as Browns, Minto, and Windsor islands. Numerous secondary roads begin flooding at this point.
26 expect flooding of numerous roads along the Willamette in the Salem area. Homes on Browns Island begin flooding at this level.
23 minor flooding occurs on Grand Island and other islands in the mid Willamette River. Access roads to these islands are also likely flooded at this point.
20 access roads to the islands on the Willamette River near Salem begin to flood.
18 numerous sloughs are filled, and a few secondary roads begin to flood at this point.
15 the Wheatland and Buena Vista ferries will likely cease operation due to safety concerns.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
10-day Forecast/Trend, Northwest River Forecast Center
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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.
NWS Information
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Portland, OR 97230-1089
(503) 261-9246
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Page last modified: 2-Nov-2020 7:27 PM
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