Sinkhole risk in De Witt 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 398 square miles, under one square mile of De Witt County maps onto soluble rock. With about 15,319 residents (39 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 335 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 De Witt County

The nearest county rated sinkhole country is Calhoun County, IL, about 117 miles southwest. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Piatt County, IL 20 mi southeast · 0% at surface
McLean County, IL 22 mi north · 0% at surface
Macon County, IL 22 mi south · 0% at surface
Logan County, IL 25 mi west · 0% at surface
Champaign County, IL 37 mi east · 0% at surface
Tazewell County, IL 39 mi northwest · 0% at surface

Against the rest of Illinois

De Witt County ranks 42 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.