Sinkhole risk in Gratiot County, MI: 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 Gratiot County

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

Across 568 square miles, under one square mile of Gratiot County maps onto soluble rock. With about 41,372 residents (73 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 391 map points about 1.2 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 Gratiot County

The nearest county rated sinkhole country is Genesee County, MI, about 49 miles east. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Clinton County, MI 24 mi south · 0% at surface
Midland County, MI 27 mi northeast · 0% at surface
Isabella County, MI 27 mi northwest · 0% at surface
Montcalm County, MI 27 mi west · 0% at surface
Saginaw County, MI 28 mi east · 0% at surface
Shiawassee County, MI 33 mi southeast · 0% at surface

Against the rest of Michigan

Gratiot County ranks 37 of 83 in Michigan for soluble rock at the surface, and sits above 0% of US counties on that measure.