Sinkhole risk in Norman County, MN: 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 873 square miles, under one square mile of Norman County maps onto soluble rock. With about 6,284 residents (7 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 384 map points about 1.5 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 Norman County

The nearest county rated sinkhole country is Boyd County, NE, about 326 miles south. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Clay County, MN 30 mi south · 0% at surface
Mahnomen County, MN 31 mi east · 0% at surface
Polk County, MN 31 mi north · 0% at surface
Traill County, ND 34 mi west · 0% at surface
Red Lake County, MN 41 mi northeast · 0% at surface
Becker County, MN 43 mi southeast · 0% at surface

Against the rest of Minnesota

Norman County ranks 58 of 87 in Minnesota for soluble rock at the surface, and sits above 0% of US counties on that measure.