Cassia County, ID Shrink-Swell Risk

Shrink-swell potential in Cassia County, ID

Low

Soil across 92.2% of Cassia County, ID comes back "Low" in USDA's shrink-swell data, averaging 1.82% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Cassia County, ID - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Cassia County: the real numbers

Cassia County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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

Among the 3,085 rated counties on this site, Cassia County, ID ranks 2,152 most-constrained nationally, and 31 of 44 within Idaho. Cassia County covers 2,566 square miles and counts 25,976 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Tazewell County, IL and Florence 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

Elsewhere in Idaho

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