Frost line depth in Bristol Bay Borough, AK

How deep the ground freezes in Bristol Bay Borough, AK

64 in. Dig to 65 in, just below the frost. Nearest NOAA station: King Salmon, 13.6 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