Sinkhole risk in Crawford County, PA: 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 1,012 square miles, under one square mile of Crawford County maps onto soluble rock. With about 82,089 residents (81 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 353 map points about 1.7 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 Crawford County

The nearest county rated sinkhole country is Union County, PA, about 166 miles east. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Venango County, PA 27 mi southeast · 5% at surface
Mercer County, PA 28 mi south · 0% at surface
Erie County, PA 30 mi north · 0% at surface
Ashtabula County, OH 36 mi northwest · 0% at surface
Warren County, PA 43 mi east · 0% at surface
Trumbull County, OH 43 mi southwest · 0% at surface

Against the rest of Pennsylvania

Crawford County ranks 50 of 67 in Pennsylvania for soluble rock at the surface, and sits above 0% of US counties on that measure.