Dallas County, AR Shrink-Swell Risk

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

Low

USDA's SSURGO data puts Dallas County, AR's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.97% across 86.8% 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 Dallas 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 Dallas County will actually do.

Report cost vs. repair cost

With Dallas 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.

Dallas County's rank among Arkansas counties

Nationally, Dallas County, AR is the 2,011-most-constrained of 3,085 rated counties for shrink-swell soil. Within Arkansas alone it ranks 62 of 75. Dallas County, AR is 667 square miles with a population of 6,076.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Monona County, IA and Monroe County, NY 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 Logan County, AR and Woodruff County, AR. The full underlying dataset is downloadable directly, one row per county.