Sinkhole risk in Danville city, 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: 1%
At or near the surface: 1%
Buried under cover: 0%

What to do about a house in Danville city

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

Across 43 square miles, under one square mile of Danville city maps onto soluble rock. With about 41,993 residents (981 per square mile), most of the county is built up, so a mapped unit is likely to sit under somebody's street. The figures come from 508 map points about 0.3 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 Danville city

The nearest county rated sinkhole country is Roanoke city, VA, about 57 miles northwest. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Caswell County, NC 14 mi south · 0% at surface
Pittsylvania County, VA 16 mi north · 2% at surface
Rockingham County, NC 25 mi southwest · 9% at surface
Martinsville city, VA 26 mi west · 0% at surface
Person County, NC 28 mi southeast · 0% at surface
Halifax County, VA 29 mi northeast · under 1% at surface

What Danville city is built on

The largest mapped soluble unit here is the Newark Supergroup; Conglomerate, mixed clasts (conglomerate), Triassic in age, covering about 1% of the county.

Against the rest of Virginia

Danville city ranks 83 of 133 in Virginia for soluble rock at the surface, and sits above 55% of US counties on that measure.