Murray County, OK Shrink-Swell Risk
Murray County, OK's soil, for shrink-swell risk
Moderate
Murray County, OK: USDA's soil survey rates 44.3% of the county "Moderate" for shrink-swell potential (5.25% 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 Murray County's reading doesn't cover
Two lots a mile apart in Murray County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Murray 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.
Murray County's rank among Oklahoma counties
Nationally, Murray County, OK is the 248-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 5 of 77. The county spans 416 square miles, home to 13,754 people.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Jeff Davis County, TX and Cass 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 Sequoyah County, OK and Beaver County, OK. The full underlying dataset is downloadable directly, one row per county.