Adams County, CO Shrink-Swell Risk

What Adams County, CO's soil means for a foundation

Low

USDA's SSURGO data puts Adams County, CO's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.44% across 66.4% 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 Adams County, CO 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 Adams County, CO 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.

Adams County's rank among Colorado counties

Nationally, Adams County, CO is the 1,605-most-constrained of 3,085 rated counties for shrink-swell soil. Within Colorado alone it ranks 29 of 63. The county spans 1,167 square miles, home to 542,973 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Collin County, TX and Buffalo County, NE 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 Colorado

Every county in Colorado is on this site, including Rio Blanco County, CO and Boulder County, CO. The full underlying dataset is downloadable directly, one row per county.