Sinkhole risk in Macon County, GA: Pockets of it

Pockets of it

Soluble rock at the surface or under thin cover in part of the county.

On soluble rock: 33%
At or near the surface: 32%
Buried under cover: under 1%

What to do about a house in Macon County

Check the parcel against your state survey sinkhole map, and ask for an inspection if cracks, depressions or sticking doors show up.

That works out to roughly 131 of Macon County's 401 square miles on soluble rock, 128 of them with the rock at or near the surface. With about 11,831 residents (30 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 279 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Macon County

The nearest county rated sinkhole country is Peach County, GA, about 19 miles northeast, close enough that the same rock may run under the county line. None of the 6 closest counties land in the same band, so Macon County stands out from its surroundings.

Schley County, GA 17 mi southwest · 0% at surface
Taylor County, GA 18 mi northwest · 0% at surface
Peach County, GA 19 mi northeast · 59% at surface
Dooly County, GA 20 mi southeast · 88% at surface
Houston County, GA 24 mi east · 61% at surface
Sumter County, GA 24 mi south · 8% at surface

Which formation it is

The largest mapped soluble unit here is the Eocene undifferentiated (sand), Eocene in age, covering about 32% of the county. Next is the Ocala Limestone at under 1%.

Against the rest of Georgia

Macon County ranks 28 of 159 in Georgia for soluble rock at the surface, and sits above 80% of US counties on that measure.