Adams County, OH Shrink-Swell Risk
Shrink-swell potential in Adams County, OH
Moderate
Soil across 48.5% of Adams County, OH comes back "Moderate" in USDA's shrink-swell data, averaging 3.61% linear extensibility. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Adams County, OH - never a reading for one specific parcel. 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 Adams County.
Adams County: the real numbers
Adams 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.
How Adams County, OH compares
Among the 3,085 rated counties on this site, Adams County, OH ranks 776 most-constrained nationally, and 29 of 88 within Ohio. The county spans 584 square miles, home to 27,671 people.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Glades County, FL and Jennings County, IN 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 Ohio
Every county in Ohio is on this site, including Pickaway County, OH and Miami County, OH. The full underlying dataset is downloadable directly, one row per county.