Sinkhole risk in St. Joseph 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%

The next step for one property

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 St. Joseph County maps onto soluble rock. With about 61,171 residents (122 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 377 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: how these percentages are measured, and the warning signs that apply anywhere.

Counties around St. Joseph County

The nearest county rated sinkhole country is Barry County, MI, about 48 miles north. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

LaGrange County, IN 19 mi south · 0% at surface
Kalamazoo County, MI 23 mi north · 0% at surface
Branch County, MI 23 mi east · 0% at surface
Cass County, MI 25 mi west · 0% at surface
Elkhart County, IN 28 mi southwest · 0% at surface
Steuben County, IN 33 mi southeast · 0% at surface

Against the rest of Michigan

St. Joseph County ranks 76 of 83 in Michigan for soluble rock at the surface, and sits above 0% of US counties on that measure.