St. Francis County, AR Shrink-Swell Risk

Shrink-swell potential in St. Francis County, AR

Moderate

Soil across 59% of St. Francis County, AR comes back "Moderate" in USDA's shrink-swell data, averaging 5.65% 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 St. Francis County, AR - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

St. Francis County: the real numbers

St. Francis 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.

St. Francis County's rank among Arkansas counties

Among the 3,085 rated counties on this site, St. Francis County, AR ranks 192 most-constrained nationally, and 12 of 75 within Arkansas. The county spans 635 square miles, home to 21,822 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Mecosta County, MI and King 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 Pulaski County, AR and Yell County, AR. The full underlying dataset is downloadable directly, one row per county.