Oct 22, 2017
A very potent atmospheric river brought strong winds to the north Oregon Coast and Coast Range on October 21st. What followed was a tremendous amount of rain for some locations along the north Oregon Coast and in the Coast Range, with Lees Camp receiving upwards of 9 inches of rain. All this heavy rain brought the earliest significant Wilson River Flood on record, as well as flooding on several other rivers around the area.
Source: NOAA National Weather Service Storm Events Database (event 724687). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Clackamas County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.