Sinkhole risk in Hall County, GA: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: under 1%
At or near the surface: under 1%
Buried under cover: 0%

What to do about a house in Hall County

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

Across 393 square miles, under one square mile of Hall County maps onto soluble rock. With about 221,745 residents (565 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 611 map points about 0.8 miles apart, so a pocket smaller than that can be missed or overstated.

Counties around Hall County

The nearest county rated sinkhole country is Bartow County, GA, about 58 miles west. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Banks County, GA 18 mi east · 0% at surface
Forsyth County, GA 19 mi west · 0% at surface
Jackson County, GA 19 mi southeast · 0% at surface
Lumpkin County, GA 20 mi northwest · 0% at surface
Dawson County, GA 22 mi northwest · 0% at surface
White County, GA 23 mi north · 0% at surface

What Hall County is built on

The largest mapped soluble unit here is the Calcareous mica schist/ Micaceous marble/ Mica schist (mica schist), Age not given in age, covering about under 1% of the county.

Against the rest of Georgia

Hall County ranks 74 of 159 in Georgia for soluble rock at the surface, and sits above 50% of US counties on that measure.