Campbell County, WY Shrink-Swell Risk

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

Moderate

USDA's SSURGO data puts Campbell County, WY's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.8% across 53.2% of the county's surveyed land. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

This is a county figure, not a lot figure

USDA's survey covers the whole of Campbell 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 Campbell County, WY 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.

Campbell County's rank among Wyoming counties

Nationally, Campbell County, WY is the 675-most-constrained of 3,085 rated counties for shrink-swell soil. Within Wyoming alone it ranks 3 of 23. Campbell County, WY is 4,802 square miles with a population of 47,946.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Hansford County, TX and Colleton County, SC 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 Teton County, WY and Lincoln County, WY. The full underlying dataset is downloadable directly, one row per county.