Sinkhole risk in Clinton County, OH: 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%

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 409 of Clinton County's 409 square miles on soluble rock. With about 42,019 residents (103 per square mile), there is effectively nowhere in the county off the soluble rock, town or country. The figures come from 302 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why the 100% under cover still counts, and the signs to look for and how an inspection works.

Counties around Clinton County

The nearest county rated sinkhole country is Kenton County, KY, about 52 miles southwest. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Greene County, OH 19 mi north · 0% at surface
Highland County, OH 19 mi southeast · 3% at surface
Warren County, OH 20 mi west · 0% at surface
Fayette County, OH 21 mi northeast · 0% at surface
Clermont County, OH 31 mi southwest · 0% at surface
Brown County, OH 34 mi south · 9% at surface

The rock underneath

The largest mapped soluble unit here is the Cedarville, Springfield, Euphemia, and Laurel Dolomites; Massie Shale, Undivided (dolostone (dolomite)), Silurian in age, covering about 29% of the county. Next is the Drakes, Whitewater and Liberty Formations, Undivided at 26%.

Against the rest of Ohio

Clinton County ranks 21 of 88 in Ohio for soluble rock at the surface, and sits above 0% of US counties on that measure.