Graham County, NC Shrink-Swell Risk

Shrink-swell potential in Graham County, NC

Low

Soil across 99.5% of Graham County, NC comes back "Low" in USDA's shrink-swell data, averaging 1.15% 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 Graham County, NC - never a reading for one specific parcel. 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 Graham County.

Graham County: the real numbers

Graham 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 Graham County, NC compares

Among the 3,085 rated counties on this site, Graham County, NC ranks 2,803 most-constrained nationally, and 97 of 100 within North Carolina. Graham County covers 292 square miles and counts 8,179 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Cowley County, KS and Newton County, IN 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 Rutherford County, NC and Halifax County, NC. The full underlying dataset is downloadable directly, one row per county.