Sinkhole risk in Grant County, WA: 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 2,680 square miles, under one square mile of Grant County maps onto soluble rock. With about 104,717 residents (39 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 241 map points about 3.3 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 Grant County

The nearest county rated sinkhole country is Emery County, UT, about 717 miles southeast. 6 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Douglas County, WA 38 mi north · 0% at surface
Adams County, WA 47 mi east · 0% at surface
Franklin County, WA 54 mi southeast · 0% at surface
Lincoln County, WA 55 mi northeast · 0% at surface
Kittitas County, WA 57 mi west · under 1% at surface
Benton County, WA 68 mi south · 0% at surface

Against the rest of Washington

Grant County ranks 20 of 39 in Washington for soluble rock at the surface, and sits above 0% of US counties on that measure.