Gallia County, OH has a very low earthquake risk, with a total of 1 earthquakes since 1931. The USGS database shows that there is a 0.73% chance of a major earthquake within 50km of Gallia County, OH within the next 50 years. The largest earthquake within 30 miles of Gallia County, OH was a 3.3 Magnitude in 1975.
View the probability of a major earthquake within the next 50 years in Gallia County, OH.
View the number of earthquake incidents in Gallia County, OH by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Gallia County, OH within 30 miles. All distances and depths in the table are measured in miles.