Sinkhole risk in Lonoke County, AR: 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 Lonoke County

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

Across 772 square miles, under one square mile of Lonoke County maps onto soluble rock. With about 76,389 residents (99 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 286 map points about 1.6 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Lonoke County

The nearest county rated sinkhole country is Izard County, AR, about 93 miles north. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Prairie County, AR 20 mi east · 0% at surface
Pulaski County, AR 24 mi west · 3% at surface
Jefferson County, AR 33 mi south · 14% at surface
White County, AR 35 mi north · 0% at surface
Faulkner County, AR 37 mi northwest · 0% at surface
Monroe County, AR 40 mi east · 0% at surface

Against the rest of Arkansas

Lonoke County ranks 58 of 75 in Arkansas for soluble rock at the surface, and sits above 0% of US counties on that measure.