Sinkhole risk in Sedgwick 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%

What to do about a house in Sedgwick County

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

Across 548 square miles, under one square mile of Sedgwick County maps onto soluble rock. With about 2,257 residents (4 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 403 map points about 1.2 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 Sedgwick County

The nearest county rated sinkhole country is Dawes County, NE, about 133 miles north. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Deuel County, NE 17 mi north · 0% at surface
Phillips County, CO 19 mi south · 0% at surface
Perkins County, NE 38 mi east · 0% at surface
Logan County, CO 40 mi west · 0% at surface
Cheyenne County, NE 42 mi northwest · 0% at surface
Chase County, NE 42 mi southeast · 0% at surface

Against the rest of Colorado

Sedgwick County ranks 62 of 64 in Colorado for soluble rock at the surface, and sits above 0% of US counties on that measure.