Campbell County, SD Shrink-Swell Risk

Campbell County's SSURGO shrink-swell reading

Moderate

In Campbell County, SD, 49.9% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.57% linear extensibility on average. 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.

Before you rely on this for one address

Campbell County's reading is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Budgeting for Campbell County, SD

Campbell 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.

Campbell County's rank among South Dakota counties

Among the 3,085 rated counties on this site, Campbell County, SD ranks 801 most-constrained nationally, and 54 of 66 within South Dakota. Campbell County, SD is 734 square miles with a population of 1,342.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Muskogee County, OK and Caribou 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 South Dakota

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