Howard County, IA Shrink-Swell Risk

Shrink-swell potential in Howard County, IA

Low

Soil across 59.3% of Howard County, IA comes back "Low" in USDA's shrink-swell data, averaging 2.84% 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 Howard County, IA - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Howard County will actually do.

Howard County: the real numbers

Howard 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.

Howard County's rank among Iowa counties

Among the 3,085 rated counties on this site, Howard County, IA ranks 1,319 most-constrained nationally, and 96 of 99 within Iowa. The county spans 473 square miles, home to 9,360 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Dyer County, TN and Burlington County, NJ 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 Chickasaw County, IA and Iowa County, IA. The full underlying dataset is downloadable directly, one row per county.