Apr 8, 2019
A particularly strong atmospheric river took aim for the south Willamette Valley, sitting over areas south of Salem for two days, producing anywhere from 2.5 to 5 inches of rain over a 48 hour period. Some areas in the Cascades and Cascade Foothills saw 5 to 7 inches of rain over that 48 hour period. Heavy rain combined with snow melt from all the snow from a few weeks prior in this same area caused flooding along most of our rivers in this area as well as along the main-stem Willamette River
Source: NOAA National Weather Service Storm Events Database (event 818934). 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.