Frost line depth in Cavalier County, ND

How deep the ground freezes in Cavalier County, ND

77 in. Dig to 77 in, just below the frost. Nearest NOAA station: Langdon Exp Farm, 5.4 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