Frost line depth in Naugatuck Valley Planning Region, CT

How deep the ground freezes in Naugatuck Valley Planning Region, CT

18 in. Dig to 18 in, just below the frost. Nearest NOAA station: Ansonia 1 Ne, 11.7 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