Sinkhole risk in Clinton 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%

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 474 square miles, under one square mile of Clinton County maps onto soluble rock. With about 37,087 residents (78 per square mile), homes are spread across towns and farmland, and a mapped unit may or may not reach the developed parts. The figures come from 285 map points about 1.3 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 Clinton County

The nearest county rated sinkhole country is St. Louis County, MO, about 55 miles west. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Washington County, IL 17 mi south · 0% at surface
Bond County, IL 19 mi north · 0% at surface
Marion County, IL 27 mi east · 0% at surface
St. Clair County, IL 29 mi west · 0% at surface
Madison County, IL 30 mi northwest · 0% at surface
Jefferson County, IL 34 mi southeast · 0% at surface

Against the rest of Illinois

Clinton County ranks 37 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.