Calhoun County, MS Shrink-Swell Risk

What Calhoun County, MS's soil means for a foundation

Low

USDA's SSURGO data puts Calhoun County, MS's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.59% across 84.7% of the county's surveyed land. That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.

This is a county figure, not a lot figure

USDA's survey covers the whole of Calhoun County, MS at once, not any single address. 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 Calhoun County.

Report cost vs. repair cost

With Calhoun 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.

Calhoun County's rank among Mississippi counties

Nationally, Calhoun County, MS is the 1,487-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 35 of 82. Calhoun County covers 587 square miles and counts 12,754 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Walthall County, MS and Cedar County, NE 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 Yazoo County, MS and Tishomingo County, MS. The full underlying dataset is downloadable directly, one row per county.