Fremont County, IA Shrink-Swell Risk

Shrink-swell potential in Fremont County, IA

Moderate

Soil across 59.9% of Fremont County, IA comes back "Moderate" in USDA's shrink-swell data, averaging 3.82% linear extensibility. 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.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Fremont County, IA - never a reading for one specific parcel. 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 Fremont County.

Fremont County: the real numbers

Fremont 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.

How Fremont County, IA compares

Among the 3,085 rated counties on this site, Fremont County, IA ranks 670 most-constrained nationally, and 51 of 99 within Iowa. The county spans 511 square miles, home to 6,494 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Scott County, KY and Pierce County, ND 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 Iowa

Every county in Iowa is on this site, including Tama County, IA and Plymouth County, IA. The full underlying dataset is downloadable directly, one row per county.