Sinkhole risk in Robertson County, KY: Pockets of it

Pockets of it

Soluble rock at the surface or under thin cover in part of the county.

On soluble rock: 39%
At or near the surface: 39%
Buried under cover: 0%

What to do about a house in Robertson 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 38 of Robertson County's 100 square miles on soluble rock, 38 of them with the rock at or near the surface. With about 2,382 residents (24 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 260 map points about 0.6 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Robertson County

The nearest county rated sinkhole country is Mason County, KY, about 14 miles northeast, close enough that the same rock may run under the county line. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Bracken County, KY 12 mi north · 33% at surface
Nicholas County, KY 12 mi south · 38% at surface
Mason County, KY 14 mi northeast · 76% at surface
Harrison County, KY 15 mi west · 44% at surface
Pendleton County, KY 20 mi northwest · 9% at surface
Fleming County, KY 22 mi southeast · 58% at surface

The rock underneath

The largest mapped soluble unit here is the Lexington Limestone (limestone), Ordovician in age, covering about 24% of the county. Next is the Ashlock Formation, Grant Lake and Calloway Creek Limestones, and Fairview Formation, undivided at 15%.

Against the rest of Kentucky

Robertson County ranks 57 of 120 in Kentucky for soluble rock at the surface, and sits above 83% of US counties on that measure.