Sinkhole risk in Campbell County, VA: 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: 2%
At or near the surface: 2%
Buried under cover: 0%

What to do about a house in Campbell County

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

That works out to roughly 8 of Campbell County's 503 square miles on soluble rock, 8 of them with the rock at or near the surface. With about 55,342 residents (110 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 529 map points about 1.0 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Campbell County

The nearest county rated sinkhole country is Buena Vista city, VA, about 39 miles north, close enough that the same rock may run under the county line. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Lynchburg city, VA 14 mi northwest · under 1% at surface
Appomattox County, VA 19 mi northeast · 2% at surface
Bedford County, VA 25 mi west · 4% at surface
Charlotte County, VA 28 mi southeast · 2% at surface
Amherst County, VA 29 mi north · under 1% at surface
Pittsylvania County, VA 32 mi southwest · 2% at surface

The rock underneath

The largest mapped soluble unit here is the Alligator Back Formation - Banded marble (marble), Proterozoic Z-Cambrian in age, covering about under 1% of the county. Next is the Newark Supergroup; Conglomerate, mixed clasts at under 1%.

Against the rest of Virginia

Campbell County ranks 81 of 133 in Virginia for soluble rock at the surface, and sits above 56% of US counties on that measure.