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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 Tualatin River near Dilley are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 19.5
Moderate Flood Stage: 0
Flood Stage: 17.5
Action Stage: 16
Low Stage (in feet): -9999

Historic Crests
(1) 19.34 ft on 12/22/1964
(2) 19.27 ft on 01/21/1972
(3) 19.06 ft on 02/08/1996
(4) 19.00 ft on 12/05/2007
(5) 18.80 ft on 12/22/1955
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.67 ft on 11/25/2016
(2) 17.93 ft on 12/09/2015
(3) 17.57 ft on 03/30/2012
(4) 17.48 ft on 01/09/2009
(5) 17.88 ft on 01/02/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 4.60 ft on 10/08/1974
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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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19.5 expect major and widespread flooding in the upper Tualatin Valley, with numerou road closures likely and several homes flooded or isolated due to surrounding flood waters.
18.5 a few homes are threatened by floodwaters. Numerous roads are flooded and may be closed, and widespread lowland agricultural flooding occurs.
17.5 several minor roads begin to flood and may be closed. Widespread lowland agricultural flooding occurs at this and higher stages.
17 expect inundation of low areas, including some farmland, along the river channel.
(1) USGS gage house
(2) Downstream view from Spring Hill Rd Bridge
(3) Upstream view from Spring Hill Rd Bridge
(4) Upstream view from gage

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
10-day Forecast/Trend, Northwest River Forecast Center
Collaborative Agencies Collapse
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.
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Page last modified: 30-Oct-2020 4:07 PM
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