Okmulgee County, OK Shrink-Swell Risk
Shrink-swell potential in Okmulgee County, OK
Moderate
Soil across 59.5% of Okmulgee County, OK comes back "Moderate" in USDA's shrink-swell data, averaging 3.15% 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 this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Okmulgee County, OK - never a reading for one specific parcel. 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 Okmulgee County.
Okmulgee County: the real numbers
Okmulgee 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 Okmulgee County, OK compares
Among the 3,085 rated counties on this site, Okmulgee County, OK ranks 1,084 most-constrained nationally, and 44 of 77 within Oklahoma. Okmulgee County, OK is 697 square miles with a population of 37,084.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Garfield County, WA and Washington County, KS 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 Love County, OK and Kingfisher County, OK. The full underlying dataset is downloadable directly, one row per county.