The Wasatch Fault is an active fault located primarily on the western edge of the Wasatch Mountains in the U.S. state of Utah. The fault is 240 miles long, stretching from southern Idaho, through northern Utah, before terminating in central Utah near the town of Fayette. It is made up of several segments, on average 25 miles long, each of which can independently produce earthquakes as powerful as local magnitude 7.5.