Leflore County, MS Shrink-Swell Risk

Shrink-swell potential in Leflore County, MS

Very High

Soil across 66.5% of Leflore County, MS comes back "Very High" in USDA's shrink-swell data, averaging 10.77% 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 this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Leflore County, MS - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Leflore County will actually do.

Leflore County: the real numbers

Leflore County's soil reading is exactly the case where a report before construction, or before cracks widen, pays for itself. A geotechnical report runs $1,000-$5,000 (typically $2,700); an actual foundation repair, once cracking sets in, typically runs $5,000-$15,000 (around $10,000 typical) - roughly 4x the report.

Where this sits nationally

Among the 3,085 rated counties on this site, Leflore County, MS ranks 19 most-constrained nationally, and 6 of 82 within Mississippi. Leflore County covers 594 square miles and counts 26,157 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Bolivar County, MS and Jackson County, IN are worth a look for comparison.

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

Elsewhere in Mississippi

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