Marion County, AR Shrink-Swell Risk

Shrink-swell potential in Marion County, AR

Low

Soil across 64.2% of Marion County, AR comes back "Low" in USDA's shrink-swell data, averaging 2.42% 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 Marion County, AR - 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 Marion County will actually do.

Marion County: the real numbers

Marion 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 Marion County, AR compares

Among the 3,085 rated counties on this site, Marion County, AR ranks 1,620 most-constrained nationally, and 48 of 75 within Arkansas. The county spans 597 square miles, home to 17,593 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Lawrence County, PA and Irion County, TX 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 Arkansas

Every county in Arkansas is on this site, including Carroll County, AR and Fulton County, AR. The full underlying dataset is downloadable directly, one row per county.