Floyd County, IA Shrink-Swell Risk

Floyd County, IA's soil, for shrink-swell risk

Low

Floyd County, IA: USDA's soil survey rates 52.7% of the county "Low" for shrink-swell potential (2.92% linear extensibility). That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What Floyd County's reading doesn't cover

Two lots a mile apart in Floyd County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

What it costs to find out, versus to ignore it

With Floyd County, IA 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.

How Floyd County, IA compares

Nationally, Floyd County, IA is the 1,251-most-constrained of 3,085 rated counties for shrink-swell soil. Within Iowa alone it ranks 88 of 99. Floyd County covers 501 square miles and counts 15,008 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Pasquotank County, NC and Harrison County, KY 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 Iowa

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