Calhoun County, AL Shrink-Swell Risk

Shrink-swell potential in Calhoun County, AL

Low

Soil across 81.2% of Calhoun County, AL comes back "Low" in USDA's shrink-swell data, averaging 1.8% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Calhoun County, AL - 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 Calhoun County will actually do.

Calhoun County: the real numbers

Calhoun 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 Calhoun County, AL compares

Among the 3,085 rated counties on this site, Calhoun County, AL ranks 2,169 most-constrained nationally, and 38 of 67 within Alabama. Calhoun County, AL is 606 square miles with a population of 116,427.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Newton County, GA and Grant County, MN 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 Alabama

Every county in Alabama is on this site, including Marion County, AL and Lauderdale County, AL. The full underlying dataset is downloadable directly, one row per county.