Henderson County, IL Shrink-Swell Risk

Shrink-swell potential in Henderson County, IL

Moderate

Soil across 50.4% of Henderson County, IL comes back "Moderate" in USDA's shrink-swell data, averaging 3.5% 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 Henderson County, IL - 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).

Henderson County: the real numbers

Henderson 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 Henderson County, IL compares

Among the 3,085 rated counties on this site, Henderson County, IL ranks 848 most-constrained nationally, and 63 of 101 within Illinois. Henderson County covers 379 square miles and counts 6,048 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Haywood County, TN and Daniels County, MT 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 Sangamon County, IL and Winnebago County, IL. The full underlying dataset is downloadable directly, one row per county.