Kingsbury County, SD Shrink-Swell Risk

Shrink-swell potential in Kingsbury County, SD

Moderate

Soil across 69.5% of Kingsbury County, SD comes back "Moderate" in USDA's shrink-swell data, averaging 3.94% linear extensibility. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Kingsbury County, SD - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Kingsbury County: the real numbers

Kingsbury 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 Kingsbury County, SD compares

Among the 3,085 rated counties on this site, Kingsbury County, SD ranks 608 most-constrained nationally, and 38 of 66 within South Dakota. Kingsbury County covers 832 square miles and counts 5,261 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Clarke County, IA and Union 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 Spink County, SD and Oglala Lakota County, SD. The full underlying dataset is downloadable directly, one row per county.