Clinton County, PA Shrink-Swell Risk
What Clinton County, PA's soil means for a foundation
Low
USDA's SSURGO data puts Clinton County, PA's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.39% across 97% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
This is a county figure, not a lot figure
USDA's survey covers the whole of Clinton County, PA at once, not any single address. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Clinton County.
Report cost vs. repair cost
With Clinton County, PA rating "Low", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.
Clinton County's rank among Pennsylvania counties
Nationally, Clinton County, PA is the 2,623-most-constrained of 3,085 rated counties for shrink-swell soil. Within Pennsylvania alone it ranks 46 of 67. The county spans 890 square miles, home to 37,865 people.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Mecosta County, MI and Hall County, NE are worth a look for comparison.
How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil
More of Pennsylvania
Every county in Pennsylvania is on this site, including Perry County, PA and Montgomery County, PA. The full underlying dataset is downloadable directly, one row per county.