Mountrail County, ND Shrink-Swell Risk

Shrink-swell potential in Mountrail County, ND

Moderate

Soil across 75.9% of Mountrail County, ND comes back "Moderate" in USDA's shrink-swell data, averaging 3.33% 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 Mountrail County, ND - 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 Mountrail County will actually do.

Mountrail County: the real numbers

Mountrail 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 Mountrail County, ND compares

Among the 3,085 rated counties on this site, Mountrail County, ND ranks 955 most-constrained nationally, and 14 of 53 within North Dakota. Mountrail County, ND is 1,825 square miles with a population of 9,474.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Daniels County, MT and Waupaca County, WI 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 Eddy County, ND and Ramsey County, ND. The full underlying dataset is downloadable directly, one row per county.