May 8, 2018
Spring time mountain snow melt caused the Similkameen River to achieve Moderate Flood Stage during the second and third week of May. No structures were flooded but a few homes in the river valley suffered yard inundation. The main impacts were extensive field and bottom land flooding in the river valley and the flooding of secondary roads near the river and along Palmer Lake, specifically the Loomis-Oroville Road and Chopaka Road. Palmer Lake flooded as the river backed up along the outlet to t
Source: NOAA National Weather Service Storm Events Database (event 756474). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Okanogan County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.