in Virginia, geothermal heat flow reaching the surface (measured in milliwatts/square meter) is highest near Bath County
Source: Department of Energy, Geothermal Heat Flow and Existing Plants
Virginia has 20 thermal springs, ranging in temperature from 60-106 degrees Fahrenheit. However, the state's greatest geothermal asset is the stable-temperature soil, which averages around 56 degrees. In the winter, that is warm; in the summer, that is cool.
geothermal energy potential in the United States
Source: US Energy Information Administration, Geothermal Explained: Where Geothermal Energy Is Found
geysers such as Old Faithful in Yellowstone National Park are generated by water heated at depth, reaching the boiling point, and then surging to the surface