Tioga County, PA Shrink-Swell Risk
Shrink-swell potential in Tioga County, PA
Low
Soil across 99.3% of Tioga County, PA comes back "Low" in USDA's shrink-swell data, averaging 0.79% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Tioga County, PA - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Tioga County will actually do.
Tioga County: the real numbers
Tioga 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.
Tioga County's rank among Pennsylvania counties
Among the 3,085 rated counties on this site, Tioga County, PA ranks 2,995 most-constrained nationally, and 65 of 67 within Pennsylvania. Tioga County, PA is 1,134 square miles with a population of 40,698.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Levy County, FL and Towner County, ND 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 Northampton County, PA and Clarion County, PA. The full underlying dataset is downloadable directly, one row per county.