Grant County, OK Shrink-Swell Risk

Grant County, OK's soil, for shrink-swell risk

Moderate

Grant County, OK: USDA's soil survey rates 38.5% of the county "Moderate" for shrink-swell potential (4.43% 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 Grant County's reading doesn't cover

Two lots a mile apart in Grant 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 Grant 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.

Where this sits nationally

Nationally, Grant County, OK is the 405-most-constrained of 3,085 rated counties for shrink-swell soil. Within Oklahoma alone it ranks 13 of 77. The county spans 1,001 square miles, home to 4,123 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Dubois County, IN and Kinney County, TX 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 Stephens County, OK and Alfalfa County, OK. The full underlying dataset is downloadable directly, one row per county.