Sinkhole risk in Alamance 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%

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 423 square miles, under one square mile of Alamance County maps onto soluble rock. With about 183,040 residents (432 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 367 map points about 1.1 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 Alamance County

The nearest county rated sinkhole country is Harnett County, NC, about 55 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Orange County, NC 16 mi east · 0% at surface
Guilford County, NC 22 mi west · 0% at surface
Caswell County, NC 24 mi north · 0% at surface
Chatham County, NC 25 mi south · 0% at surface
Durham County, NC 29 mi east · 0% at surface
Rockingham County, NC 32 mi northwest · 9% at surface

Against the rest of North Carolina

Alamance County ranks 64 of 100 in North Carolina for soluble rock at the surface, and sits above 0% of US counties on that measure.