Boone County, AR Shrink-Swell Risk

What Boone County, AR's soil means for a foundation

Low

USDA's SSURGO data puts Boone County, AR's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.12% across 69.7% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

This is a county figure, not a lot figure

USDA's survey covers the whole of Boone County, AR at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Boone County will actually do.

Report cost vs. repair cost

With Boone County, AR 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.

Where this sits nationally

Nationally, Boone County, AR is the 1,874-most-constrained of 3,085 rated counties for shrink-swell soil. Within Arkansas alone it ranks 56 of 75. Boone County, AR is 590 square miles with a population of 38,636.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Beaverhead County, MT and Mellette County, SD 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 Arkansas

Every county in Arkansas is on this site, including Union County, AR and Montgomery County, AR. The full underlying dataset is downloadable directly, one row per county.