SinkholeOdds

Sinkhole risk in Gwinnett 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%

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 431 square miles, under one square mile of Gwinnett County maps onto soluble rock. With about 1,003,869 residents (2,328 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 567 map points about 0.9 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 Gwinnett County

The nearest county rated sinkhole country is Bartow County, GA, about 50 miles northwest. 6 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 Georgia

Gwinnett County ranks 105 of 159 in Georgia for soluble rock at the surface, and sits above 0% of US counties on that measure.