Sinkhole risk in Pickaway County, OH: 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: 36%
At or near the surface: 0%
Buried under cover: 36%

What to do about a house in Pickaway County

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

That works out to roughly 179 of Pickaway County's 501 square miles on soluble rock. With about 62,158 residents (124 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 300 map points about 1.3 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Pickaway County

The nearest county rated sinkhole country is Mason County, KY, about 84 miles southwest. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Franklin County, OH 22 mi north · 0% at surface
Ross County, OH 22 mi south · 0% at surface
Fayette County, OH 23 mi west · 0% at surface
Fairfield County, OH 24 mi east · 0% at surface
Madison County, OH 25 mi northwest · 0% at surface
Hocking County, OH 32 mi east · 0% at surface

What Pickaway County is built on

The largest mapped soluble unit here is the Salina Group (dolostone (dolomite)), Silurian in age, covering about 22% of the county. Next is the Columbus Limestone at 10%.

Against the rest of Ohio

Pickaway County ranks 66 of 88 in Ohio for soluble rock at the surface, and sits above 0% of US counties on that measure.