Calhoun County, WV Shrink-Swell Risk

Shrink-swell potential in Calhoun County, WV

Moderate

Soil across 78.8% of Calhoun County, WV comes back "Moderate" in USDA's shrink-swell data, averaging 3.57% linear extensibility. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

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, WV - 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, WV compares

Among the 3,085 rated counties on this site, Calhoun County, WV ranks 800 most-constrained nationally, and 8 of 55 within West Virginia. The county spans 279 square miles, home to 5,873 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Traverse County, MN and Donley 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 West Virginia

Every county in West Virginia is on this site, including Wood County, WV and Nicholas County, WV. The full underlying dataset is downloadable directly, one row per county.