Camas County, ID Shrink-Swell Risk

What Camas County, ID's soil means for a foundation

Moderate

USDA's SSURGO data puts Camas County, ID's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.15% across 50.8% of the county's surveyed land. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

This is a county figure, not a lot figure

USDA's survey covers the whole of Camas County, ID at once, not any single address. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Camas County.

Report cost vs. repair cost

With Camas County, ID 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.

Where this sits nationally

Nationally, Camas County, ID is the 1,089-most-constrained of 3,085 rated counties for shrink-swell soil. Within Idaho alone it ranks 3 of 44. Camas County covers 1,074 square miles and counts 1,247 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Wadena County, MN and Massac County, IL 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 Idaho

Every county in Idaho is on this site, including Jerome County, ID and Fremont County, ID. The full underlying dataset is downloadable directly, one row per county.