SinkholeOdds

Sinkhole risk in Chatham 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 681 square miles, under one square mile of Chatham County maps onto soluble rock. With about 83,874 residents (123 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 315 map points about 1.5 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 Chatham County

The nearest county rated sinkhole country is Harnett County, NC, about 32 miles southeast, 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.

Against the rest of North Carolina

Chatham County ranks 71 of 100 in North Carolina for soluble rock at the surface, and sits above 0% of US counties on that measure.