Carter County, OK Shrink-Swell Risk
Carter County's SSURGO shrink-swell reading
Moderate
In Carter County, OK, 43.3% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.28% linear extensibility on average. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
Before you rely on this for one address
Carter 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 Carter County.
Budgeting for Carter County, OK
Carter 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 Carter County, OK compares
Among the 3,085 rated counties on this site, Carter County, OK ranks 447 most-constrained nationally, and 15 of 77 within Oklahoma. Carter County covers 822 square miles and counts 49,135 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Shelby County, KY and Seneca County, NY 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 Oklahoma
Every county in Oklahoma is on this site, including Beaver County, OK and Mayes County, OK. The full underlying dataset is downloadable directly, one row per county.