Weakley County, TN Shrink-Swell Risk
Weakley County, TN's soil, for shrink-swell risk
Low
Weakley County, TN: USDA's soil survey rates 99.8% of the county "Low" for shrink-swell potential (1.47% 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 Weakley County's reading doesn't cover
Two lots a mile apart in Weakley 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 Weakley County, TN 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, Weakley County, TN is the 2,545-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 81 of 95. The county spans 580 square miles, home to 33,162 people.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Washburn County, WI and Conway County, AR 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 Tennessee
Every county in Tennessee is on this site, including Hardeman County, TN and Union County, TN. The full underlying dataset is downloadable directly, one row per county.