Sinkhole risk in DeKalb County, IN: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: under 1%
At or near the surface: 0%
Buried under cover: under 1%

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.

That works out to roughly 2 of DeKalb County's 363 square miles on soluble rock. With about 44,330 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 385 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around DeKalb County

The nearest county rated sinkhole country is Barry County, MI, about 83 miles north. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Steuben County, IN 17 mi north · 0% at surface
Allen County, IN 21 mi south · 0% at surface
Noble County, IN 21 mi west · 0% at surface
Williams County, OH 25 mi northeast · 0% at surface
Defiance County, OH 27 mi east · 0% at surface
LaGrange County, IN 28 mi northwest · 0% at surface

What DeKalb County is built on

The largest mapped soluble unit here is the Muscatatuck Group (limestone), Devonian in age, covering about under 1% of the county.

Against the rest of Indiana

DeKalb County ranks 44 of 92 in Indiana for soluble rock at the surface, and sits above 0% of US counties on that measure.