Frost line depth in Kenai Peninsula Borough, AK

How deep the ground freezes in Kenai Peninsula Borough, AK

52 in. Dig to 52 in, just below the frost. Nearest NOAA station: Big River Lakes, 30.9 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