Sinkhole risk in Ida County, IA: 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 432 square miles, under one square mile of Ida County maps onto soluble rock. With about 6,810 residents (16 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 324 map points about 1.2 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 Ida County

The nearest county rated sinkhole country is Knox County, NE, about 123 miles west. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Sac County, IA 21 mi east · 0% at surface
Crawford County, IA 25 mi south · 0% at surface
Cherokee County, IA 25 mi north · 0% at surface
Woodbury County, IA 28 mi west · 0% at surface
Buena Vista County, IA 31 mi northeast · 0% at surface
Monona County, IA 33 mi southwest · 0% at surface

Against the rest of Iowa

Ida County ranks 52 of 99 in Iowa for soluble rock at the surface, and sits above 0% of US counties on that measure.