Frost line depth in Mariposa County, CA

How deep the ground freezes in Mariposa County, CA

18 in. Dig to 19 in, just below the frost. Nearest NOAA station: Yosemite Village 12 W, 13.7 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