Frost line depth in Foster County, ND

How deep the ground freezes in Foster County, ND

65 in. Dig to 66 in, just below the frost. Nearest NOAA station: Carrington 4 N, 11.9 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