Flood in Clackamas County, Oregon
Flood November 7, 2006 · Clackamas County, Oregon
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
The Sandy River near Bull Run crested at flood stage of 19.3 on November 7th.
The wider storm
Several days of nearly non-stop weather systems brought copious amounts of rainfall to northwest Oregon. With moderate temperatures in place, very close to all of this rainfall became run-off, and many rivers over the area swelled in response. Many rivers reached and maintained flood stage for a couple days.
One river in particular, the Wilson River near Tillamook, recorded record flooding. This river's flood stage is 12.0 feet, and the river crested at 22.8 feet (38,500 cfs), well above major flood stage. The town of Tillamook, downstream from this gauge, was underwater for several days after the crest.
Began near Bull Run (45.4300, -122.2300).
Source: NOAA Storm Events Database, event 4700. Narratives are written by the National Weather Service forecast office that issued the report.
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