Sinkhole risk in Hughes County, SD: 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 742 square miles, under one square mile of Hughes County maps onto soluble rock. With about 17,526 residents (24 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 573 map points about 1.1 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 Hughes County

The nearest county rated sinkhole country is Boyd County, NE, about 119 miles southeast. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Sully County, SD 25 mi north · 0% at surface
Hyde County, SD 27 mi northeast · 0% at surface
Lyman County, SD 34 mi south · 0% at surface
Stanley County, SD 38 mi west · 0% at surface
Buffalo County, SD 45 mi southeast · 3% at surface
Potter County, SD 46 mi north · 0% at surface

Against the rest of South Dakota

Hughes County ranks 37 of 66 in South Dakota for soluble rock at the surface, and sits above 0% of US counties on that measure.