Sherman County, TX Shrink-Swell Risk
Sherman County, TX's soil, for shrink-swell risk
Moderate
Sherman County, TX: USDA's soil survey rates 70.8% of the county "Moderate" for shrink-swell potential (3.96% linear extensibility). That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.
What Sherman County's reading doesn't cover
Two lots a mile apart in Sherman County can carry different soil, even though they share one countywide reading. 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 Sherman County.
What it costs to find out, versus to ignore it
With Sherman 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.
Sherman County's rank among Texas counties
Nationally, Sherman County, TX is the 595-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 132 of 253. Sherman County, TX is 923 square miles with a population of 2,771.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Long County, GA and Liberty 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
More of Texas
Every county in Texas is on this site, including Atascosa County, TX and Angelina County, TX. The full underlying dataset is downloadable directly, one row per county.