Sinkhole risk in Union County, KY: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

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

What this means before you buy

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 343 square miles, under one square mile of Union County maps onto soluble rock. With about 13,178 residents (38 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 537 map points about 0.8 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Union County

The nearest county rated sinkhole country is Hardin County, IL, about 20 miles southwest, close enough that the same rock may run under the county line. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Gallatin County, IL 17 mi northwest · 0% at surface
Webster County, KY 17 mi southeast · 0% at surface
Hardin County, IL 20 mi southwest · 61% at surface
Crittenden County, KY 22 mi south · 66% at surface
Henderson County, KY 23 mi northeast · 0% at surface
Posey County, IN 26 mi north · 0% at surface

Against the rest of Kentucky

Union County ranks 118 of 120 in Kentucky for soluble rock at the surface, and sits above 0% of US counties on that measure.