Venango County, PA Shrink-Swell Risk
Shrink-swell potential in Venango County, PA
Low
Soil across 82.7% of Venango County, PA comes back "Low" in USDA's shrink-swell data, averaging 1.74% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Venango County, PA - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
Venango County: the real numbers
Venango County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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.
Where this sits nationally
Among the 3,085 rated counties on this site, Venango County, PA ranks 2,228 most-constrained nationally, and 18 of 67 within Pennsylvania. The county spans 674 square miles, home to 49,476 people.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Montgomery County, IA and St. Croix County, WI 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
Elsewhere in Pennsylvania
Every county in Pennsylvania is on this site, including Somerset County, PA and Dauphin County, PA. The full underlying dataset is downloadable directly, one row per county.