Madison County, TX Shrink-Swell Risk

Shrink-swell potential in Madison County, TX

Moderate

Soil across 65.2% of Madison County, TX comes back "Moderate" in USDA's shrink-swell data, averaging 4.87% linear extensibility. 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.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Madison County, TX - never a reading for one specific parcel. 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 Madison County.

Madison County: the real numbers

Madison 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.

Madison County's rank among Texas counties

Among the 3,085 rated counties on this site, Madison County, TX ranks 315 most-constrained nationally, and 78 of 253 within Texas. Madison County, TX is 466 square miles with a population of 13,877.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Union County, FL and Polk County, MN 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 Texas

Every county in Texas is on this site, including Crosby County, TX and McLennan County, TX. The full underlying dataset is downloadable directly, one row per county.