Atoka County, OK Shrink-Swell Risk
Atoka County, OK's soil, for shrink-swell risk
Moderate
Atoka County, OK: USDA's soil survey rates 55.1% of the county "Moderate" for shrink-swell potential (4.54% 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 Atoka County's reading doesn't cover
Two lots a mile apart in Atoka County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Atoka County will actually do.
What it costs to find out, versus to ignore it
With Atoka 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.
How Atoka County, OK compares
Nationally, Atoka County, OK is the 379-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 12 of 77. Atoka County covers 975 square miles and counts 14,600 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Huerfano County, CO and Daviess 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 Oklahoma
Every county in Oklahoma is on this site, including Beckham County, OK and Comanche County, OK. The full underlying dataset is downloadable directly, one row per county.