Frost line depth in Otter Tail County, MN

How deep the ground freezes in Otter Tail County, MN

64 in. Dig to 65 in, just below the frost. Nearest NOAA station: Ottertail, 8 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