Sinkhole risk in Wilkinson 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: 92%
At or near the surface: 44%
Buried under cover: 48%

The next step for one property

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 412 of Wilkinson County's 449 square miles on soluble rock, 196 of them with the rock at or near the surface. With about 8,667 residents (19 per square mile), there is effectively nowhere in the county off the soluble rock, town or country. The figures come from 597 map points about 0.9 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why the 48% under cover still counts, and the signs to look for and how an inspection works.

Counties around Wilkinson County

The nearest county rated sinkhole country is Houston County, GA, about 37 miles southwest, close enough that the same rock may run under the county line. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Twiggs County, GA 17 mi southwest · 39% at surface
Baldwin County, GA 18 mi north · 21% at surface
Washington County, GA 25 mi northeast · 10% at surface
Jones County, GA 27 mi northwest · 11% at surface
Bleckley County, GA 27 mi south · 39% at surface
Bibb County, GA 30 mi west · 6% at surface

What Wilkinson County is built on

The largest mapped soluble unit here is the Lower Tertiary-Cretaceous undifferentiated (sand), Lower Tertiary-Cretaceous in age, covering about 74% of the county. Next is the Ocala Limestone at 10%.

Against the rest of Georgia

Wilkinson County ranks 22 of 159 in Georgia for soluble rock at the surface, and sits above 85% of US counties on that measure.