Sinkhole risk in Logan County, CO: 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 1,839 square miles, under one square mile of Logan County maps onto soluble rock. With about 20,755 residents (11 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 402 map points about 2.1 miles apart, so a pocket smaller than that can be missed or overstated.

Two things to read before deciding: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Logan County

The nearest county rated sinkhole country is Dawes County, NE, about 137 miles north. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Cheyenne County, NE 34 mi north · 0% at surface
Sedgwick County, CO 40 mi east · 0% at surface
Phillips County, CO 40 mi east · 0% at surface
Kimball County, NE 46 mi northwest · 0% at surface
Deuel County, NE 48 mi northeast · 0% at surface
Morgan County, CO 50 mi southwest · 0% at surface

Against the rest of Colorado

Logan County ranks 56 of 64 in Colorado for soluble rock at the surface, and sits above 0% of US counties on that measure.