Many geothermal areas throughout the world exhibit earthquake activity in the form of swarms (Ward, 1972). Detailed epicenters and characteristics of earthquake swarms can provide Useful information on stress orientation and the possibility of locating fault zones that could provide underground conduits for geothermal fluids. Furthermore potential earthquakes and related hazards which may influence a geothermal reservoir can be better understood from a detailed assessment of local earthquake activity. It was hoped that an earthquake survey of the Roosevelt Hot Springs and Cove Fort areas of southwestern Utah (Figure 1) could provide information about the geothermal potential of this area and the relationship between the earthquakes and the local tectonic patterns