Sinkhole risk in Alpine 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 to do about a house in Alpine County
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 738 square miles, under one square mile of Alpine County maps onto soluble rock. With about 1,099 residents (1 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 251 map points about 1.7 miles apart, so a pocket smaller than that can be missed or overstated.
Read next: how these percentages are measured, and the warning signs that apply anywhere.
Counties around Alpine County
The nearest county rated sinkhole country is Emery County, UT, about 489 miles east. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Douglas County, NV 22 mi northeast · 13% at surface
- Carson City, NV 37 mi north · 2% at surface
- El Dorado County, CA 41 mi west · 0% at surface
- Tuolumne County, CA 42 mi south · under 1% at surface
- Lyon County, NV 43 mi northeast · 9% at surface
- Amador County, CA 48 mi west · 0% at surface
Against the rest of California
Alpine County ranks 28 of 58 in California for soluble rock at the surface, and sits above 0% of US counties on that measure.
- Trinity County 25%
- Inyo County 17%
- Ventura County 9%
- Shasta County 9%
- Siskiyou County 9%