Richland County, ND Shrink-Swell Risk

Shrink-swell potential in Richland County, ND

Moderate

Soil across 52.2% of Richland County, ND comes back "Moderate" in USDA's shrink-swell data, averaging 3.56% linear extensibility. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Richland 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 Richland County will actually do.

Richland County: the real numbers

Richland 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.

Richland County's rank among North Dakota counties

Among the 3,085 rated counties on this site, Richland County, ND ranks 804 most-constrained nationally, and 11 of 53 within North Dakota. Richland County, ND is 1,436 square miles with a population of 16,658.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Lunenburg County, VA and Decatur County, IA 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 Mountrail County, ND and Grant County, ND. The full underlying dataset is downloadable directly, one row per county.