Major Fault Lines:
* Lost River Fault: This is the most significant fault in Idaho, extending over 200 miles from the Oregon border to the Snake River Plain. It's responsible for some of the state's largest earthquakes, including the 1983 Borah Peak earthquake (M6.9).
* Lemhi Fault: Running parallel to the Lost River Fault, this fault is also responsible for significant earthquakes in the past.
* Salmon River Fault: This major fault is located in central Idaho and has been associated with several large earthquakes.
* Teton Fault: While primarily located in Wyoming, the Teton Fault extends into Idaho and is known for its potential to produce large earthquakes.
Other Significant Faults:
* Wasatch Fault: This fault, located on the western edge of the state, is a major fault system in the Rocky Mountains and is responsible for significant earthquakes in Utah. It extends into Idaho near the Utah border.
* Snake River Plain Fault System: This complex system of faults is associated with the volcanic activity of the Snake River Plain. It is responsible for numerous smaller earthquakes.
Important Note:
While these are some of the most prominent fault lines in Idaho, there are many other smaller faults that could also produce earthquakes. The entire state is prone to seismic activity, and it's important to be aware of the risks.
Resources for More Information:
* Idaho Geological Survey: https://www.idahogeology.org/
* United States Geological Survey (USGS): https://www.usgs.gov/
* Idaho Department of Lands: https://idl.idaho.gov/
These resources can provide detailed information about seismic hazards in Idaho, including maps of fault lines, historical earthquake records, and earthquake preparedness guidelines.
