Gallatin County, KY Shrink-Swell Risk
Gallatin County, KY's soil, for shrink-swell risk
Moderate
Gallatin County, KY: USDA's soil survey rates 79.2% of the county "Moderate" for shrink-swell potential (3.5% linear extensibility). Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
What Gallatin County's reading doesn't cover
Two lots a mile apart in Gallatin 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 Gallatin County, KY rating "Moderate", 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, Gallatin County, KY is the 846-most-constrained of 3,085 rated counties for shrink-swell soil. Within Kentucky alone it ranks 30 of 120. Gallatin County, KY is 98 square miles with a population of 8,805.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Roanoke County, VA and Dickinson County, IA 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 Madison County, KY and Livingston County, KY. The full underlying dataset is downloadable directly, one row per county.