Jefferson Davis County, MS Shrink-Swell Risk

Jefferson Davis County, MS's soil, for shrink-swell risk

Low

Jefferson Davis County, MS: USDA's soil survey rates 91.5% of the county "Low" for shrink-swell potential (1.78% 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 Jefferson Davis County's reading doesn't cover

Two lots a mile apart in Jefferson Davis County can carry different soil, even though they share one countywide reading. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Jefferson Davis County.

What it costs to find out, versus to ignore it

With Jefferson Davis County, MS 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.

How Jefferson Davis County, MS compares

Nationally, Jefferson Davis County, MS is the 2,188-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 58 of 82. Jefferson Davis County, MS is 408 square miles with a population of 11,059.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Wells County, IN and Bedford County, PA 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 Mississippi

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