Sinkhole risk in Marshall County, KY: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: under 1%
At or near the surface: under 1%
Buried under cover: 0%

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 302 square miles, under one square mile of Marshall County maps onto soluble rock. With about 31,734 residents (105 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 302 map points about 1.0 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 Marshall County

The nearest county rated sinkhole country is Lyon County, KY, about 17 miles northeast, 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.

Lyon County, KY 17 mi northeast · 58% at surface
Calloway County, KY 18 mi south · 3% at surface
Graves County, KY 21 mi southwest · 0% at surface
Livingston County, KY 23 mi north · 54% at surface
McCracken County, KY 24 mi northwest · 0% at surface
Trigg County, KY 27 mi east · 75% at surface

What Marshall County is built on

The largest mapped soluble unit here is the Warsaw Limestone (limestone), Mississippian in age, covering about under 1% of the county.

Against the rest of Kentucky

Marshall County ranks 93 of 120 in Kentucky for soluble rock at the surface, and sits above 51% of US counties on that measure.