Sinkhole risk in Liberty County, GA: Mostly deep or small

Mostly deep or small

Some soluble rock, mostly deeply buried or in a small share of the county.

On soluble rock: 42%
At or near the surface: 0%
Buried under cover: 42%

What to do about a house in Liberty County

Sinkholes are uncommon here; watch for new depressions after heavy rain or leaking pipes.

That works out to roughly 217 of Liberty County's 516 square miles on soluble rock. With about 68,607 residents (133 per square mile), homes are spread across towns and farmland, and a mapped unit may or may not reach the developed parts. The figures come from 369 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Liberty County

The nearest county rated sinkhole country is Hampton County, SC, about 70 miles north. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Bryan County, GA 15 mi north · under 1% at surface
Long County, GA 17 mi west · 0% at surface
McIntosh County, GA 23 mi south · 0% at surface
Chatham County, GA 25 mi northeast · 0% at surface
Wayne County, GA 32 mi southwest · 0% at surface
Evans County, GA 35 mi northwest · 0% at surface

The rock underneath

The largest mapped soluble unit here is the Charlton Formation and Duplin Marl (limestone), Pliocene in age, covering about 42% of the county.

Against the rest of Georgia

Liberty County ranks 118 of 159 in Georgia for soluble rock at the surface, and sits above 0% of US counties on that measure.