Rock Township, IA has a very low earthquake risk, with a total of 0 earthquakes since 1931. The USGS database shows that there is a 0.28% chance of a major earthquake within 50km of Rock Township, IA within the next 50 years.
View the probability of a major earthquake within the next 50 years in Rock Township, IA.
See Iowa Earthquake Report or Sioux County, IA Earthquake Report