Walker County, TX Shrink-Swell Risk
Walker County, TX's soil, for shrink-swell risk
Moderate
Walker County, TX: USDA's soil survey rates 44.3% of the county "Moderate" for shrink-swell potential (5.15% 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 Walker County's reading doesn't cover
Two lots a mile apart in Walker County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Walker 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.
Walker County's rank among Texas counties
Nationally, Walker County, TX is the 267-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 70 of 253. Walker County covers 784 square miles and counts 83,722 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Lamar County, MS and Scott County, MO 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 Brazoria County, TX and Stonewall County, TX. The full underlying dataset is downloadable directly, one row per county.