Issaquena County, MS Shrink-Swell Risk

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

Very High

Issaquena County, MS: USDA's soil survey rates 65.9% of the county "Very High" for shrink-swell potential (12.62% 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 Issaquena County's reading doesn't cover

Two lots a mile apart in Issaquena 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

Given Issaquena County's rating, spending a few thousand now is the way to avoid spending tens of thousands later. The report ($1,000-$5,000) is what tells you whether Issaquena 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.

Issaquena County's rank among Mississippi counties

Nationally, Issaquena County, MS is the 6-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 2 of 82. The county spans 413 square miles, home to 1,295 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Cloud County, KS and Esmeralda County, NV 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 Greene County, MS and Simpson County, MS. The full underlying dataset is downloadable directly, one row per county.