Alamance County, NC Shrink-Swell Risk

Alamance County's SSURGO shrink-swell reading

Moderate

In Alamance County, NC, 52.9% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.1% linear extensibility on average. 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.

Before you rely on this for one address

Alamance County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Alamance County.

Budgeting for Alamance County, NC

Alamance 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Alamance County, NC ranks 1,117 most-constrained nationally, and 8 of 100 within North Carolina. The county spans 423 square miles, home to 183,040 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Van Buren County, TN and Wyandotte County, KS 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 North Carolina

Every county in North Carolina is on this site, including Graham County, NC and Transylvania County, NC. The full underlying dataset is downloadable directly, one row per county.