Frost line depth in Obion County, TN

How deep the ground freezes in Obion County, TN

16 in. Dig to 16 in, just below the frost. Nearest NOAA station: Union City, 6.8 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