Sinkhole risk in Tishomingo County, MS: 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: 10%
At or near the surface: 10%
Buried under cover: 0%

What to do about a house in Tishomingo County

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

That works out to roughly 41 of Tishomingo County's 424 square miles on soluble rock, 41 of them with the rock at or near the surface. With about 18,553 residents (44 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 314 map points about 1.2 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 Tishomingo County

The nearest county rated sinkhole country is Colbert County, AL, about 25 miles east, close enough that the same rock may run under the county line. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Prentiss County, MS 18 mi southwest · 24% at surface
Alcorn County, MS 22 mi northwest · 41% at surface
Colbert County, AL 25 mi east · 60% at surface
Franklin County, AL 30 mi southeast · 31% at surface
Hardin County, TN 32 mi north · 9% at surface
Itawamba County, MS 32 mi south · 4% at surface

What Tishomingo County is built on

The largest mapped soluble unit here is the Chester group (limestone), Mississippian in age, covering about 5% of the county. Next is the Chester group at 5%.

Against the rest of Mississippi

Tishomingo County ranks 23 of 82 in Mississippi for soluble rock at the surface, and sits above 68% of US counties on that measure.