Sinkhole risk in Cullman County, AL: No soluble rock mapped

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 735 square miles, under one square mile of Cullman County maps onto soluble rock. With about 92,604 residents (126 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 250 map points about 1.7 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Cullman County

The nearest county rated sinkhole country is Morgan County, AL, about 22 miles north, close enough that the same rock may run under the county line. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

• Blount County, AL 20 mi southeast · 23% at surface
• Morgan County, AL 22 mi north · 56% at surface
• Winston County, AL 28 mi west · 0% at surface
• Marshall County, AL 34 mi east · 29% at surface
• Walker County, AL 34 mi southwest · 0% at surface
• Lawrence County, AL 38 mi northwest · 60% at surface

Against the rest of Alabama

Cullman County ranks 56 of 67 in Alabama for soluble rock at the surface, and sits above 0% of US counties on that measure.

• Houston County 84%
• Jackson County 60%
• Colbert County 60%
• Talladega County 60%
• Lawrence County 60%