Flood — Clackamas, Oregon

2011-01-16 · near Cattrell, Clackamas, Oregon

Event narrative

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.

Wider weather episode

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.

View location on OpenStreetMap → (45.4572, -122.2717)

Source: NOAA Storm Events Database, event_id 278739. Narrative written by the NWS forecast office that issued the report.