Johnson County, KY Shrink-Swell Risk

Shrink-swell potential in Johnson County, KY

Low

Soil across 98.7% of Johnson County, KY comes back "Low" in USDA's shrink-swell data, averaging 0.95% 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 Johnson County, KY - 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 Johnson County will actually do.

Johnson County: the real numbers

Johnson 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.

Johnson County's rank among Kentucky counties

Among the 3,085 rated counties on this site, Johnson County, KY ranks 2,918 most-constrained nationally, and 120 of 120 within Kentucky. Johnson County, KY is 262 square miles with a population of 22,098.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Gasconade County, MO and Nevada County, CA 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 Kentucky

Every county in Kentucky is on this site, including Christian County, KY and Lewis County, KY. The full underlying dataset is downloadable directly, one row per county.