Sinkhole risk in Greene 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%

What to do about a house in Greene County

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 414 of Greene County's 414 square miles on soluble rock. With about 172,347 residents (417 per square mile), there is effectively nowhere in the county off the soluble rock, town or country. The figures come from 325 map points about 1.1 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Greene County

The nearest county rated sinkhole country is Kenton County, KY, about 62 miles southwest. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Clark County, OH 17 mi north · 0% at surface
Clinton County, OH 19 mi south · 0% at surface
Montgomery County, OH 22 mi west · 0% at surface
Warren County, OH 23 mi southwest · 0% at surface
Fayette County, OH 25 mi east · 0% at surface
Madison County, OH 30 mi northeast · 0% at surface

The rock underneath

The largest mapped soluble unit here is the Cincinnati Group as used by Wickstrom (1990) (shale), Ordovician in age, covering about 30% of the county. Next is the Cedarville, Springfield, and Euphemia Dolomites, Undivided at 21%.

Against the rest of Ohio

Greene County ranks 35 of 88 in Ohio for soluble rock at the surface, and sits above 0% of US counties on that measure.