Frost line depth in Owyhee County, ID

How deep the ground freezes in Owyhee County, ID

14 in. Dig to 15 in, just below the frost. Nearest NOAA station: Bruneau, 29 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