Sinkhole risk in Guilford County, NC: 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%

The next step for one property

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

Across 646 square miles, under one square mile of Guilford County maps onto soluble rock. With about 558,816 residents (865 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 377 map points about 1.3 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 Guilford County

The nearest county rated sinkhole country is Harnett County, NC, about 71 miles southeast. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Rockingham County, NC 21 mi north · 9% at surface
Alamance County, NC 22 mi east · 0% at surface
Randolph County, NC 26 mi south · 0% at surface
Forsyth County, NC 26 mi west · 3% at surface
Davidson County, NC 31 mi southwest · 0% at surface
Caswell County, NC 33 mi northeast · 0% at surface

Against the rest of North Carolina

Guilford County ranks 80 of 100 in North Carolina for soluble rock at the surface, and sits above 0% of US counties on that measure.