Sinkhole risk in Cobb County, GA: 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 340 square miles, under one square mile of Cobb County maps onto soluble rock. With about 787,538 residents (2,318 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 281 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 Cobb County

The nearest county rated sinkhole country is Bartow County, GA, about 26 miles northwest, close enough that the same rock may run under the county line. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Fulton County, GA 12 mi southeast · 0% at surface
Paulding County, GA 17 mi west · under 1% at surface
Douglas County, GA 20 mi southwest · 0% at surface
Cherokee County, GA 22 mi north · under 1% at surface
DeKalb County, GA 23 mi southeast · 0% at surface
Bartow County, GA 26 mi northwest · 62% at surface

Against the rest of Georgia

Cobb County ranks 89 of 159 in Georgia for soluble rock at the surface, and sits above 0% of US counties on that measure.