Smith County, KS Shrink-Swell Risk

Smith County's SSURGO shrink-swell reading

Moderate

In Smith County, KS, 63.2% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.39% 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

Smith 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 Smith County will actually do.

Budgeting for Smith County, KS

Smith 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.

Smith County's rank among Kansas counties

Among the 3,085 rated counties on this site, Smith County, KS ranks 915 most-constrained nationally, and 69 of 105 within Kansas. Smith County, KS is 895 square miles with a population of 3,541.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Bremer County, IA and Tift County, GA 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 Kansas

Every county in Kansas is on this site, including Phillips County, KS and Coffey County, KS. The full underlying dataset is downloadable directly, one row per county.