Somervell County, TX Shrink-Swell Risk
Shrink-swell potential in Somervell County, TX
Moderate
Soil across 51.2% of Somervell County, TX comes back "Moderate" in USDA's shrink-swell data, averaging 3.36% 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 Somervell 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 Somervell County.
Somervell County: the real numbers
Somervell 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 Somervell County, TX compares
Among the 3,085 rated counties on this site, Somervell County, TX ranks 942 most-constrained nationally, and 172 of 253 within Texas. Somervell County, TX is 186 square miles with a population of 10,098.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Yavapai County, AZ and Union County, FL 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 Robertson County, TX and Hardeman County, TX. The full underlying dataset is downloadable directly, one row per county.