Prairie County, AR Shrink-Swell Risk

Shrink-swell potential in Prairie County, AR

Moderate

Soil across 54.4% of Prairie County, AR comes back "Moderate" in USDA's shrink-swell data, averaging 4.73% linear extensibility. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Prairie County, AR - 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 Prairie County will actually do.

Prairie County: the real numbers

Prairie County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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.

Prairie County's rank among Arkansas counties

Among the 3,085 rated counties on this site, Prairie County, AR ranks 341 most-constrained nationally, and 18 of 75 within Arkansas. Prairie County, AR is 648 square miles with a population of 7,935.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Spartanburg County, SC and Bracken County, KY 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

Elsewhere in Arkansas

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