Frost line depth in Towner County, ND

How deep the ground freezes in Towner County, ND

76 in. Dig to 77 in, just below the frost. Nearest NOAA station: Rolla 1ne, 20.6 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 · Method