Park County, WY Shrink-Swell Risk

What Park County, WY's soil means for a foundation

Low

USDA's SSURGO data puts Park County, WY's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.91% across 82.4% 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 Park County, WY at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Report cost vs. repair cost

With Park 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.

Where this sits nationally

Nationally, Park County, WY is the 2,062-most-constrained of 3,085 rated counties for shrink-swell soil. Within Wyoming alone it ranks 21 of 23. Park County covers 6,939 square miles and counts 31,082 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Ascension Parish, LA and Sullivan County, IN 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 Converse County, WY and Goshen County, WY. The full underlying dataset is downloadable directly, one row per county.