Sinkhole risk in Amador County, CA: 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 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.

Across 595 square miles, under one square mile of Amador County maps onto soluble rock. With about 42,026 residents (71 per square mile), homes are spread across towns and farmland, and a mapped unit may or may not reach the developed parts. The figures come from 358 map points about 1.3 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 Amador County

The nearest county rated sinkhole country is Emery County, UT, about 537 miles east. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Calaveras County, CA 18 mi south · under 1% at surface
El Dorado County, CA 25 mi north · 0% at surface
Sacramento County, CA 37 mi west · 0% at surface
Placer County, CA 43 mi north · 0% at surface
Tuolumne County, CA 47 mi southeast · under 1% at surface
Alpine County, CA 48 mi east · 0% at surface

Against the rest of California

Amador County ranks 29 of 58 in California for soluble rock at the surface, and sits above 0% of US counties on that measure.