McCurtain County, OK Shrink-Swell Risk

McCurtain County, OK's soil, for shrink-swell risk

Moderate

McCurtain County, OK: USDA's soil survey rates 53.2% of the county "Moderate" for shrink-swell potential (3.93% 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 McCurtain County's reading doesn't cover

Two lots a mile apart in McCurtain 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 McCurtain County.

What it costs to find out, versus to ignore it

With McCurtain County, OK 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, McCurtain County, OK is the 612-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 25 of 77. The county spans 1,851 square miles, home to 30,805 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Lincoln County, GA and Pulaski County, IL 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 Oklahoma

Every county in Oklahoma is on this site, including Greer County, OK and Caddo County, OK. The full underlying dataset is downloadable directly, one row per county.