Sinkhole risk in Davis County, UT: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: under 1%
At or near the surface: under 1%
Buried under cover: 0%

What this means before you buy

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

That works out to roughly 1 of Davis County's 325 square miles on soluble rock, 1 of them with the rock at or near the surface. With about 378,470 residents (1,165 per square mile), most of the county is built up, so a mapped unit is likely to sit under somebody's street. The figures come from 240 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Davis County

The nearest county rated sinkhole country is Emery County, UT, about 161 miles southeast. None of the 6 closest counties land in the same band, so Davis County stands out from its surroundings.

Weber County, UT 23 mi northeast · 9% at surface
Salt Lake County, UT 29 mi southeast · 15% at surface
Morgan County, UT 33 mi east · 9% at surface
Cache County, UT 54 mi northeast · 41% at surface
Box Elder County, UT 60 mi northwest · 12% at surface
Tooele County, UT 62 mi southwest · 10% at surface

Which formation it is

The largest mapped soluble unit here is the Mississippian (2) sedimentary rocks in Salt Lake City-Coalville-Randolph region (carbonate), Mississippian in age, covering about under 1% of the county.

Against the rest of Utah

Davis County ranks 27 of 29 in Utah for soluble rock at the surface, and sits above 52% of US counties on that measure.