Frost line depth in Dillingham Census Area, AK

How deep the ground freezes in Dillingham Census Area, AK

64 in. Dig to 65 in, just below the frost. Nearest NOAA station: King Salmon, 83.3 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 · Method