Frost line depth in Brown County, MN

How deep the ground freezes in Brown County, MN

53 in. Dig to 53 in, just below the frost. Nearest NOAA station: Springfield 1 Nw, 12.5 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