Sinkhole risk in Toombs 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: 100%
At or near the surface: 0%
Buried under cover: 100%

What this means before you buy

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 364 of Toombs County's 364 square miles on soluble rock. With about 27,488 residents (76 per square mile), there is effectively nowhere in the county off the soluble rock, town or country. The figures come from 289 map points about 1.1 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: why the 100% under cover still counts, and the signs to look for and how an inspection works.

Counties around Toombs County

The nearest county rated sinkhole country is Pulaski County, GA, about 68 miles west. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Montgomery County, GA 12 mi west · 0% at surface
Tattnall County, GA 17 mi east · 0% at surface
Wheeler County, GA 24 mi west · 0% at surface
Treutlen County, GA 25 mi northwest · 0% at surface
Candler County, GA 25 mi northeast · 0% at surface
Evans County, GA 26 mi east · 0% at surface

What Toombs County is built on

The largest mapped soluble unit here is the "Hawthorn Formation" (sand), Miocene in age, covering about 100% of the county.

Against the rest of Georgia

Toombs County ranks 147 of 159 in Georgia for soluble rock at the surface, and sits above 0% of US counties on that measure.