Flood in Clackamas County, Oregon

Flood January 16, 2011 · Clackamas County, Oregon

$9.0M

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Heavy rain combined with snowmelt runoff resulting in the flooding of the Sandy River. The Sandy River at Bull Run crested at 21.8 feet (61,600 cfs) on January 16th at 21:48 PST. This was the third highest flow on record.

The wider storm

A series of weather disturbances over the weekend brought sub-tropical moisture to the Pacific Northwest producing heavy rainfall over the region. The heavy rainfall combined with snowmelt runoff led to flooding on several rivers and streams in Northwest Oregon as well as landslides and debris flows.

Began near Cattrell (45.4572, -122.2717).

Source: NOAA Storm Events Database, event 278739. Narratives are written by the National Weather Service forecast office that issued the report.

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