Ontario, OR has a moderate earthquake risk, with a total of 2 earthquakes since 1931. The USGS database shows that there is a 18.42% chance of a major earthquake within 50km of Ontario, OR within the next 50 years. The largest earthquake within 30 miles of Ontario, OR was a 3.7 Magnitude in 1989.
View the probability of a major earthquake within the next 50 years in Ontario, OR.
View the number of earthquake incidents in Ontario, OR by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Ontario, OR within 30 miles. All distances and depths in the table are measured in miles.