Frost line depth in Nye County, NV
How deep the ground freezes in Nye County, NV
21 in. Dig to 21 in, just below the frost. Nearest NOAA station: Twin Spring Fallini, 22.5 mi.
Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.