Sinkhole risk in Richland 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 360 square miles, under one square mile of Richland County maps onto soluble rock. With about 15,362 residents (43 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 351 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Richland County

The nearest county rated sinkhole country is Hardin County, IL, about 83 miles south. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Lawrence County, IL 19 mi east · 0% at surface
Edwards County, IL 20 mi south · 0% at surface
Jasper County, IL 21 mi north · 0% at surface
Clay County, IL 22 mi west · 0% at surface
Wabash County, IL 23 mi southeast · 0% at surface
Crawford County, IL 27 mi northeast · 0% at surface

Against the rest of Illinois

Richland County ranks 86 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.