Sinkhole risk in Marshall County, IN: Mostly deep or small

Mostly deep or small

Some soluble rock, mostly deeply buried or in a small share of the county.

On soluble rock: 9%
At or near the surface: 0%
Buried under cover: 9%

What this means before you buy

Sinkholes are uncommon here; watch for new depressions after heavy rain or leaking pipes.

That works out to roughly 41 of Marshall County's 444 square miles on soluble rock. With about 46,464 residents (105 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 1.1 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Marshall County

The nearest county rated sinkhole country is Barry County, MI, about 100 miles northeast. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Fulton County, IN 19 mi south · 0% at surface
Starke County, IN 20 mi west · 0% at surface
St. Joseph County, IN 20 mi north · 0% at surface
Kosciusko County, IN 22 mi east · 0% at surface
Elkhart County, IN 28 mi northeast · 0% at surface
LaPorte County, IN 29 mi northwest · 0% at surface

What Marshall County is built on

The largest mapped soluble unit here is the Muscatatuck Group (limestone), Devonian in age, covering about 9% of the county.

Against the rest of Indiana

Marshall County ranks 67 of 92 in Indiana for soluble rock at the surface, and sits above 0% of US counties on that measure.