Frost line depth in Cerro Gordo County, IA

How deep the ground freezes in Cerro Gordo County, IA

48 in. Dig to 48 in, just below the frost. Nearest NOAA station: Mason City Muni Ap, 6.7 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