Jefferson County, AR Shrink-Swell Risk

Jefferson County's SSURGO shrink-swell reading

Moderate

In Jefferson County, AR, 40.5% of the surveyed soil carries a "Moderate" shrink-swell rating, 5.67% linear extensibility on average. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

Before you rely on this for one address

Jefferson County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Jefferson County will actually do.

Budgeting for Jefferson County, AR

Jefferson 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.

Jefferson County's rank among Arkansas counties

Among the 3,085 rated counties on this site, Jefferson County, AR ranks 190 most-constrained nationally, and 10 of 75 within Arkansas. Jefferson County, AR is 872 square miles with a population of 63,672.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Nelson County, ND and Madison County, ID 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 Phillips County, AR and Conway County, AR. The full underlying dataset is downloadable directly, one row per county.