Towner County, ND Shrink-Swell Risk

Shrink-swell potential in Towner County, ND

Moderate

Soil across 77.8% of Towner County, ND comes back "Moderate" in USDA's shrink-swell data, averaging 3.07% 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 Towner County, ND - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Towner County: the real numbers

Towner 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, Towner County, ND ranks 1,144 most-constrained nationally, and 30 of 53 within North Dakota. Towner County covers 1,025 square miles and counts 2,051 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Newton County, TX and Providence County, RI 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 Dakota

Every county in North Dakota is on this site, including Pembina County, ND and Adams County, ND. The full underlying dataset is downloadable directly, one row per county.