Sinkhole risk in Clay County, IL: 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%

The next step for one property

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

Across 468 square miles, under one square mile of Clay County maps onto soluble rock. With about 12,821 residents (27 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 371 map points about 1.1 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Clay County

The nearest county rated sinkhole country is Hardin County, IL, about 86 miles south. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Richland County, IL 22 mi east · 0% at surface
Effingham County, IL 22 mi north · 0% at surface
Wayne County, IL 22 mi south · 0% at surface
Marion County, IL 25 mi west · 0% at surface
Jasper County, IL 25 mi northeast · 0% at surface
Edwards County, IL 33 mi southeast · 0% at surface

Against the rest of Illinois

Clay County ranks 36 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.