Navarro County, TX Shrink-Swell Risk
Navarro County's SSURGO shrink-swell reading
High
In Navarro County, TX, 54.7% of the surveyed soil carries a "High" shrink-swell rating, 8.77% linear extensibility on average. Ground like this needs active moisture control to keep a conventional foundation from cracking - it's not automatic either way.
Before you rely on this for one address
Navarro County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Navarro County.
Budgeting for Navarro County, TX
With Navarro County, TX rating "High", the gap between finding out early and finding out late is the whole decision. A geotechnical report runs $1,000-$5,000 (typically $2,700); an actual foundation repair, once cracking sets in, typically runs $5,000-$15,000 (around $10,000 typical) - roughly 4x the report.
Where this sits nationally
Among the 3,085 rated counties on this site, Navarro County, TX ranks 48 most-constrained nationally, and 11 of 253 within Texas. Navarro County, TX is 1,010 square miles with a population of 56,533.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Ness County, KS and Winston County, MS are worth a look for comparison.
How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained
Elsewhere in Texas
Every county in Texas is on this site, including Bandera County, TX and Falls County, TX. The full underlying dataset is downloadable directly, one row per county.