Frost line depth in Spink County, SD

How deep the ground freezes in Spink County, SD

54 in. Dig to 55 in, just below the frost. Nearest NOAA station: Redfield, 9.9 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