Sinkhole risk in Simpson County, MS: 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 Simpson County

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

Across 589 square miles, under one square mile of Simpson County maps onto soluble rock. With about 25,597 residents (43 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 330 map points about 1.3 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 Simpson County

The nearest county rated sinkhole country is Noxubee County, MS, about 115 miles northeast. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Jefferson Davis County, MS 24 mi south · 0% at surface
Rankin County, MS 25 mi north · 13% at surface
Smith County, MS 26 mi east · 13% at surface
Lawrence County, MS 27 mi southwest · 0% at surface
Covington County, MS 29 mi southeast · 0% at surface
Copiah County, MS 31 mi west · 0% at surface

Against the rest of Mississippi

Simpson County ranks 73 of 82 in Mississippi for soluble rock at the surface, and sits above 0% of US counties on that measure.