Harrison County, MS Shrink-Swell Risk

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

Low

Harrison County, MS: USDA's soil survey rates 97.9% of the county "Low" for shrink-swell potential (1.07% linear extensibility). 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.

What Harrison County's reading doesn't cover

Two lots a mile apart in Harrison County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Harrison County will actually do.

What it costs to find out, versus to ignore it

With Harrison 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 Harrison County, MS compares

Nationally, Harrison County, MS is the 2,859-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 82 of 82. Harrison County covers 574 square miles and counts 213,730 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Uintah County, UT and Oktibbeha County, MS 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 Union County, MS and Madison County, MS. The full underlying dataset is downloadable directly, one row per county.