Champaign County, IL Shrink-Swell Risk

Champaign County's SSURGO shrink-swell reading

Moderate

In Champaign County, IL, 85.6% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.06% 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

Champaign 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 Champaign County.

Budgeting for Champaign County, IL

Champaign 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Champaign County, IL ranks 537 most-constrained nationally, and 27 of 101 within Illinois. Champaign County covers 996 square miles and counts 212,374 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Carbon County, PA and Kenton County, KY 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 Illinois

Every county in Illinois is on this site, including McLean County, IL and Grundy County, IL. The full underlying dataset is downloadable directly, one row per county.