Desha County, AR Shrink-Swell Risk
Desha County, AR's soil, for shrink-swell risk
Very High
Desha County, AR: USDA's soil survey rates 48.5% of the county "Very High" for shrink-swell potential (9.56% linear extensibility). Ground that moves this much routinely produces the classic expansive-soil symptoms: diagonal stair-step cracking, doors that stick seasonally, uneven floors. A standard footing is a poor bet here.
What Desha County's reading doesn't cover
Two lots a mile apart in Desha County can carry different soil, even though they share one countywide reading. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Desha County.
What it costs to find out, versus to ignore it
Given Desha County's rating, spending a few thousand now is the way to avoid spending tens of thousands later. The report ($1,000-$5,000) is what tells you whether Desha County's county-level reading applies to your lot; the repair ($5,000-$15,000) is what it costs if you skip that and find out from the cracks instead.
Where this sits nationally
Nationally, Desha County, AR is the 36-most-constrained of 3,085 rated counties for shrink-swell soil. Within Arkansas alone it ranks 3 of 75. Desha County, AR is 741 square miles with a population of 10,321.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Cape May County, NJ and Henrico County, VA are worth a look for comparison.
How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained
More of Arkansas
Every county in Arkansas is on this site, including Mississippi County, AR and Ashley County, AR. The full underlying dataset is downloadable directly, one row per county.