Sinkhole risk in Clark 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 to do about a house in Clark County

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

Across 501 square miles, under one square mile of Clark County maps onto soluble rock. With about 15,076 residents (30 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 340 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Clark County

The nearest county rated sinkhole country is Monroe County, IN, about 69 miles east. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Vigo County, IN 22 mi east · 0% at surface
Crawford County, IL 23 mi south · 0% at surface
Edgar County, IL 24 mi north · 0% at surface
Cumberland County, IL 24 mi west · 0% at surface
Coles County, IL 26 mi northwest · 0% at surface
Sullivan County, IN 26 mi southeast · 0% at surface

Against the rest of Illinois

Clark County ranks 35 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.