Pushmataha County, OK Shrink-Swell Risk
What Pushmataha County, OK's soil means for a foundation
Moderate
USDA's SSURGO data puts Pushmataha County, OK's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.04% across 65.2% of the county's surveyed land. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
This is a county figure, not a lot figure
USDA's survey covers the whole of Pushmataha County, OK at once, not any single address. 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 Pushmataha County.
Report cost vs. repair cost
With Pushmataha 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.
Pushmataha County's rank among Oklahoma counties
Nationally, Pushmataha County, OK is the 1,173-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 48 of 77. Pushmataha County covers 1,396 square miles and counts 10,800 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Towns County, GA and Noble County, OH 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 Choctaw County, OK and Woods County, OK. The full underlying dataset is downloadable directly, one row per county.