Darke County, OH Shrink-Swell Risk

Darke County, OH's soil, for shrink-swell risk

Moderate

Darke County, OH: USDA's soil survey rates 68.8% of the county "Moderate" for shrink-swell potential (3.67% linear extensibility). Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

What Darke County's reading doesn't cover

Two lots a mile apart in Darke 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 Darke County, OH 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, Darke County, OH is the 745-most-constrained of 3,085 rated counties for shrink-swell soil. Within Ohio alone it ranks 27 of 88. The county spans 598 square miles, home to 51,462 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Geneva County, AL and Hart 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 Ohio

Every county in Ohio is on this site, including Champaign County, OH and Delaware County, OH. The full underlying dataset is downloadable directly, one row per county.