Big Horn County, WY Shrink-Swell Risk

What Big Horn County, WY's soil means for a foundation

Low

USDA's SSURGO data puts Big Horn County, WY's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.47% across 70.9% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

This is a county figure, not a lot figure

USDA's survey covers the whole of Big Horn County, WY 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 Big Horn County will actually do.

Report cost vs. repair cost

With Big Horn County, WY 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.

Big Horn County's rank among Wyoming counties

Nationally, Big Horn County, WY is the 1,589-most-constrained of 3,085 rated counties for shrink-swell soil. Within Wyoming alone it ranks 15 of 23. Big Horn County covers 3,137 square miles and counts 12,084 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Stone County, AR and Comal 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 Wyoming

Every county in Wyoming is on this site, including Sweetwater County, WY and Fremont County, WY. The full underlying dataset is downloadable directly, one row per county.