Clark County, MO Shrink-Swell Risk

Clark County's SSURGO shrink-swell reading

Moderate

In Clark County, MO, 56.4% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.82% 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

Clark County's reading is an average across the whole county, not a promise about any one lot inside it. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Clark County.

Budgeting for Clark County, MO

Clark 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 Clark County, MO compares

Among the 3,085 rated counties on this site, Clark County, MO ranks 328 most-constrained nationally, and 44 of 114 within Missouri. Clark County covers 505 square miles and counts 6,623 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Kauai County, HI and Defiance County, OH 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 Missouri

Every county in Missouri is on this site, including Washington County, MO and Wayne County, MO. The full underlying dataset is downloadable directly, one row per county.