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

What this means before you buy

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

Across 407 square miles, under one square mile of Hendricks County maps onto soluble rock. With about 190,629 residents (468 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 389 map points about 1.0 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 Hendricks County

The nearest county rated sinkhole country is Monroe County, IN, about 42 miles south. None of the 6 closest counties land in the same band, so Hendricks County stands out from its surroundings.

• Boone County, IN 20 mi north · 0% at surface
• Putnam County, IN 20 mi west · under 1% at surface
• Marion County, IN 20 mi east · 0% at surface
• Morgan County, IN 20 mi south · 2% at surface
• Montgomery County, IN 28 mi northwest · 0% at surface
• Johnson County, IN 29 mi southeast · 0% at surface

Against the rest of Indiana

Hendricks County ranks 54 of 92 in Indiana for soluble rock at the surface, and sits above 0% of US counties on that measure.

• Harrison County 94%
• Orange County 90%
• Crawford County 83%
• Lawrence County 71%
• Washington County 62%