Sinkhole risk in Iron County, WI: 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 to do about a house in Iron County

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

Across 758 square miles, under one square mile of Iron County maps onto soluble rock. With about 6,235 residents (8 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 256 map points about 1.7 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 Iron County

The nearest county rated sinkhole country is Vernon County, WI, about 190 miles south. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Ashland County, WI 25 mi northwest · 0% at surface
Gogebic County, MI 25 mi northeast · 0% at surface
Vilas County, WI 41 mi southeast · 0% at surface
Price County, WI 45 mi south · 0% at surface
Bayfield County, WI 48 mi northwest · 0% at surface
Sawyer County, WI 53 mi southwest · 0% at surface

Against the rest of Wisconsin

Iron County ranks 40 of 72 in Wisconsin for soluble rock at the surface, and sits above 0% of US counties on that measure.