Frost line depth in Stanley County, SD

How deep the ground freezes in Stanley County, SD

43 in. Dig to 43 in, just below the frost. Nearest NOAA station: Ft Pierre 17 Wsw, 12.5 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.

Code depth · Snow