Noble County, OK Shrink-Swell Risk
What Noble County, OK's soil means for a foundation
Moderate
USDA's SSURGO data puts Noble County, OK's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 4.18% across 52.3% 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 Noble County, OK at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Noble County will actually do.
Report cost vs. repair cost
With Noble 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.
Noble County's rank among Oklahoma counties
Nationally, Noble County, OK is the 485-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 17 of 77. Noble County, OK is 732 square miles with a population of 10,896.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Nevada County, AR and Clay County, NC 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 Pittsburg County, OK and Garvin County, OK. The full underlying dataset is downloadable directly, one row per county.