Lyon County, KY Shrink-Swell Risk
Lyon County, KY's soil, for shrink-swell risk
Low
Lyon County, KY: USDA's soil survey rates 80.5% of the county "Low" for shrink-swell potential (2.16% 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 Lyon County's reading doesn't cover
Two lots a mile apart in Lyon County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Lyon County, KY 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.
Where this sits nationally
Nationally, Lyon County, KY is the 1,841-most-constrained of 3,085 rated counties for shrink-swell soil. Within Kentucky alone it ranks 80 of 120. Lyon County covers 214 square miles and counts 9,078 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Overton County, TN and Beadle County, SD 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 Kentucky
Every county in Kentucky is on this site, including Mason County, KY and Harlan County, KY. The full underlying dataset is downloadable directly, one row per county.