Major County, OK Shrink-Swell Risk
Shrink-swell potential in Major County, OK
Low
Soil across 61.1% of Major County, OK comes back "Low" in USDA's shrink-swell data, averaging 2.35% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Major County, OK - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Major County will actually do.
Major County: the real numbers
Major 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 Major County, OK compares
Among the 3,085 rated counties on this site, Major County, OK ranks 1,693 most-constrained nationally, and 63 of 77 within Oklahoma. Major County covers 955 square miles and counts 7,569 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Benewah County, ID and Putnam County, WV 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 Wagoner County, OK and Ellis County, OK. The full underlying dataset is downloadable directly, one row per county.