SinkholeOdds

Sinkhole risk in Norfolk city, VA: 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 53 square miles, under one square mile of Norfolk city maps onto soluble rock. With about 231,105 residents (4,338 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 288 map points about 0.4 miles apart, so a pocket smaller than that can be missed or overstated.

Read next: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Norfolk city

The nearest county rated sinkhole country is Hertford County, NC, about 56 miles southwest. 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 Virginia

Norfolk city ranks 130 of 133 in Virginia for soluble rock at the surface, and sits above 0% of US counties on that measure.