Sinkhole risk in Garland County, AR: 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: 12%
At or near the surface: 12%
Buried under cover: 0%

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 81 of Garland County's 678 square miles on soluble rock, 81 of them with the rock at or near the surface. With about 99,902 residents (147 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 326 map points about 1.4 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 Garland County

The nearest county rated sinkhole country is Boone County, AR, about 119 miles north. 1 of the 6 closest counties land in the same band; the ground changes quickly around here.

Hot Spring County, AR 22 mi southeast · 0% at surface
Saline County, AR 27 mi east · 31% at surface
Perry County, AR 28 mi northeast · 0% at surface
Montgomery County, AR 30 mi west · 14% at surface
Yell County, AR 33 mi northwest · 0% at surface
Clark County, AR 36 mi south · 21% at surface

What Garland County is built on

The largest mapped soluble unit here is the Womble Shale (Middle Ordovician) (shale), Middle Ordovician in age, covering about 12% of the county.

Against the rest of Arkansas

Garland County ranks 29 of 75 in Arkansas for soluble rock at the surface, and sits above 69% of US counties on that measure.