Earthquake Hazards in Wisconsin
Wisconsin has a very low comparative expectation of earthquakes (see maps below).
Earthquakes can have a impact on water. Water quality, water availability, and flood hazards can be affected by seismic activity. Common water disruptions during earthquakes include water impoundment breaks, ruptured supply and drainage lines, well contamination, and increased non-point runoff.
See more Wisconsin earthquake information >
This map shows Wisconsin's relatively low probability of low-motion earthquakes. The peak acceleration is the maximum velocity experienced by the ground during an earthquake. It's measured in g, or m/s². Wisconsin is rated at 6%g or less. Most structures not built to resist earthquakes can withstand peak acceleration of up to 10%g. For more on U.S. hazards, see earthquake.usgs.gov.
The National Seismic Hazard Map (2008) below shows a comparative view of Wisconsin within the continental U.S.