Sinkhole risk in Perkins 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%

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 2,870 square miles, under one square mile of Perkins County maps onto soluble rock. With about 2,832 residents (1 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 399 map points about 2.7 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 Perkins County

The nearest county rated sinkhole country is Fall River County, SD, about 165 miles south. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Adams County, ND 43 mi north · 0% at surface
Harding County, SD 49 mi west · 0% at surface
Ziebach County, SD 52 mi southeast · 0% at surface
Meade County, SD 62 mi south · 3% at surface
Corson County, SD 64 mi east · 0% at surface
Butte County, SD 65 mi southwest · 6% at surface

Against the rest of South Dakota

Perkins County ranks 54 of 66 in South Dakota for soluble rock at the surface, and sits above 0% of US counties on that measure.