Sinkhole risk in Haakon 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 to do about a house in Haakon County

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

Across 1,811 square miles, under one square mile of Haakon County maps onto soluble rock. With about 1,834 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 298 map points about 2.5 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 Haakon County

The nearest county rated sinkhole country is Fall River County, SD, about 123 miles southwest. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Stanley County, SD 40 mi east · 0% at surface
Jackson County, SD 42 mi south · 0% at surface
Jones County, SD 48 mi southeast · 0% at surface
Ziebach County, SD 49 mi north · 0% at surface
Meade County, SD 62 mi west · 3% at surface
Mellette County, SD 63 mi southeast · 0% at surface

Against the rest of South Dakota

Haakon County ranks 32 of 66 in South Dakota for soluble rock at the surface, and sits above 0% of US counties on that measure.