Adams County, IL Shrink-Swell Risk

Adams County's SSURGO shrink-swell reading

Moderate

In Adams County, IL, 59.5% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.98% 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

Adams 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 Adams County, IL

Adams 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.

Adams County's rank among Illinois counties

Among the 3,085 rated counties on this site, Adams County, IL ranks 578 most-constrained nationally, and 32 of 101 within Illinois. Adams County covers 855 square miles and counts 64,109 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Teton County, MT and Breckinridge 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 Bond County, IL and Massac County, IL. The full underlying dataset is downloadable directly, one row per county.