West Carroll Parish, LA Shrink-Swell Risk

Shrink-swell potential in West Carroll Parish, LA

Moderate

Soil across 59.6% of West Carroll Parish, LA comes back "Moderate" in USDA's shrink-swell data, averaging 3.75% 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 West Carroll Parish, LA - 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 West Carroll Parish.

West Carroll Parish: the real numbers

West Carroll Parish'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, West Carroll Parish, LA ranks 701 most-constrained nationally, and 43 of 64 within Louisiana. The county spans 360 square miles, home to 9,254 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Yuma County, CO and York County, VA 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 Louisiana

Every county in Louisiana is on this site, including Acadia Parish, LA and St. Helena Parish, LA. The full underlying dataset is downloadable directly, one row per county.