Sinkhole risk in Crisp County, GA: Sinkhole country
Sinkhole country
Soluble rock at or near the surface across much of the county.
- On soluble rock
- 93%
- At or near the surface
- 50%
- Buried under cover
- 43%
What this means before you buy
Get a sinkhole or geotechnical inspection before buying, building or adding weight to a foundation.
That works out to roughly 254 of Crisp County's 273 square miles on soluble rock, 137 of them with the rock at or near the surface. With about 19,468 residents (71 per square mile), there is effectively nowhere in the county off the soluble rock, town or country. The figures come from 352 map points about 0.9 miles apart, so a pocket smaller than that can be missed or overstated.
Read next: why the 43% under cover still counts, and the signs to look for and how an inspection works.
Counties around Crisp County
The closest county with no soluble rock mapped is Schley County, GA, about 41 miles northwest. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Turner County, GA 16 mi southeast · 0% at surface
- Dooly County, GA 16 mi north · 88% at surface
- Wilcox County, GA 19 mi east · 28% at surface
- Lee County, GA 24 mi west · 75% at surface
- Worth County, GA 26 mi south · 28% at surface
- Pulaski County, GA 27 mi northeast · 67% at surface
Which formation it is
The largest mapped soluble unit here is the Suwannee Limestone and its residuum (limestone), Oligocene in age, covering about 67% of the county. Next is the Ocala Limestone at 26%.
Against the rest of Georgia
Crisp County ranks 21 of 159 in Georgia for soluble rock at the surface, and sits above 87% of US counties on that measure.
- Miller County 100%
- Baker County 93%
- Dougherty County 90%
- Dooly County 88%
- Seminole County 86%