Frost line depth in Lower Connecticut River Valley Planning Region, CT

How deep the ground freezes in Lower Connecticut River Valley Planning Region, CT

24 in. Dig to 24 in, just below the frost. Nearest NOAA station: Meriden Markham Muni Ap, 18.4 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.

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