Frost line depth in Baltimore city, MD

How deep the ground freezes in Baltimore city, MD

13 in. Dig to 13 in, just below the frost. Nearest NOAA station: Md Sci Ctr Baltimore, 1.3 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