Slope County, ND Shrink-Swell Risk

Slope County's SSURGO shrink-swell reading

Moderate

In Slope County, ND, 64.9% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.04% 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

Slope 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 Slope County.

Budgeting for Slope County, ND

Slope 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, Slope County, ND ranks 1,177 most-constrained nationally, and 33 of 53 within North Dakota. Slope County covers 1,215 square miles and counts 660 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Dixon County, NE and Texas County, MO 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 Barnes County, ND and Griggs County, ND. The full underlying dataset is downloadable directly, one row per county.