Tunica County, MS Shrink-Swell Risk

Tunica County, MS's soil, for shrink-swell risk

Very High

Tunica County, MS: USDA's soil survey rates 64.8% of the county "Very High" for shrink-swell potential (11.69% linear extensibility). That's the range most associated with real foundation cracking - stair-step cracks in mortar joints, sticking doors, gaps around window frames - and it typically needs an engineered foundation (post-tension slab, drilled piers), not a standard footing.

What Tunica County's reading doesn't cover

Two lots a mile apart in Tunica 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 Tunica County, MS rating "Very High", the gap between finding out early and finding out late is the whole decision. The report ($1,000-$5,000) is what tells you whether Tunica County's county-level reading applies to your lot; the repair ($5,000-$15,000) is what it costs if you skip that and find out from the cracks instead.

Where this sits nationally

Nationally, Tunica County, MS is the 11-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 3 of 82. Tunica County, MS is 454 square miles with a population of 9,157.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. McDuffie County, GA and Dawson County, MT are worth a look for comparison.

How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained

More of Mississippi

Every county in Mississippi is on this site, including Forrest County, MS and Jefferson Davis County, MS. The full underlying dataset is downloadable directly, one row per county.