Rock River Township, MI has a very low earthquake risk, with a total of 0 earthquakes since 1931. The USGS database shows that there is a 0.16% chance of a major earthquake within 50km of Rock River Township, MI within the next 50 years.
View the probability of a major earthquake within the next 50 years in Rock River Township, MI.
See Michigan Earthquake Report or Alger County, MI Earthquake Report