Sinkhole risk in Lucas 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 431 square miles, under one square mile of Lucas County maps onto soluble rock. With about 8,758 residents (20 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 390 map points about 1.1 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Lucas County

The nearest county rated sinkhole country is Jackson County, MO, about 150 miles south. 2 of the 6 closest counties land in the same band; the ground changes quickly around here.

Wayne County, IA 20 mi south · 0% at surface
Clarke County, IA 24 mi west · 0% at surface
Marion County, IA 24 mi northeast · 0% at surface
Warren County, IA 24 mi northwest · 0% at surface
Monroe County, IA 24 mi east · 0% at surface
Appanoose County, IA 31 mi southeast · 0% at surface

Against the rest of Iowa

Lucas County ranks 61 of 99 in Iowa for soluble rock at the surface, and sits above 0% of US counties on that measure.