Graham County, KS Shrink-Swell Risk

What Graham County, KS's soil means for a foundation

Low

USDA's SSURGO data puts Graham County, KS's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.56% across 68.1% of the county's surveyed land. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

This is a county figure, not a lot figure

USDA's survey covers the whole of Graham County, KS 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 Graham County will actually do.

Report cost vs. repair cost

With Graham County, KS rating "Low", 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, Graham County, KS is the 1,512-most-constrained of 3,085 rated counties for shrink-swell soil. Within Kansas alone it ranks 94 of 105. The county spans 899 square miles, home to 2,370 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Clark County, WI and Pawnee County, OK 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 Kansas

Every county in Kansas is on this site, including Wyandotte County, KS and Atchison County, KS. The full underlying dataset is downloadable directly, one row per county.