Frost line depth in La Plata County, CO

How deep the ground freezes in La Plata County, CO

27 in. Dig to 27 in, just below the frost. Nearest NOAA station: Durango, 1 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