Turner County, SD Shrink-Swell Risk

Turner County's SSURGO shrink-swell reading

Moderate

In Turner County, SD, 64.6% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.93% linear extensibility on average. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

Before you rely on this for one address

Turner 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 Turner County will actually do.

Budgeting for Turner County, SD

Turner 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.

How Turner County, SD compares

Among the 3,085 rated counties on this site, Turner County, SD ranks 617 most-constrained nationally, and 39 of 66 within South Dakota. Turner County covers 617 square miles and counts 9,087 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Polk County, TX and Choctaw 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

Elsewhere in South Dakota

Every county in South Dakota is on this site, including Todd County, SD and Harding County, SD. The full underlying dataset is downloadable directly, one row per county.