Sinkhole risk in Macon 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 Macon County

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

Across 581 square miles, under one square mile of Macon County maps onto soluble rock. With about 100,737 residents (174 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 335 map points about 1.3 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 Macon County

The nearest county rated sinkhole country is Calhoun County, IL, about 103 miles southwest. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Piatt County, IL 22 mi northeast · 0% at surface
De Witt County, IL 22 mi north · 0% at surface
Moultrie County, IL 24 mi southeast · 0% at surface
Christian County, IL 28 mi southwest · 0% at surface
Logan County, IL 28 mi northwest · 0% at surface
Shelby County, IL 34 mi south · 0% at surface

Against the rest of Illinois

Macon County ranks 71 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.