Carson County, TX Shrink-Swell Risk

Carson County, TX's soil, for shrink-swell risk

Moderate

Carson County, TX: USDA's soil survey rates 48.6% of the county "Moderate" for shrink-swell potential (5.19% 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 Carson County's reading doesn't cover

Two lots a mile apart in Carson County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Carson County will actually do.

What it costs to find out, versus to ignore it

With Carson County, TX rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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

Nationally, Carson County, TX is the 257-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 68 of 253. The county spans 920 square miles, home to 5,822 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Nevada County, CA and Scott County, VA 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

More of Texas

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