McHenry County, ND Shrink-Swell Risk
McHenry County, ND's soil, for shrink-swell risk
Low
McHenry County, ND: USDA's soil survey rates 83.3% of the county "Low" for shrink-swell potential (2.12% linear extensibility). Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
What McHenry County's reading doesn't cover
Two lots a mile apart in McHenry County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in McHenry County will actually do.
What it costs to find out, versus to ignore it
With McHenry County, ND rating "Low", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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 McHenry County, ND compares
Nationally, McHenry County, ND is the 1,878-most-constrained of 3,085 rated counties for shrink-swell soil. Within North Dakota alone it ranks 50 of 53. McHenry County covers 1,874 square miles and counts 5,135 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Spartanburg County, SC and Rooks County, KS 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
More of North Dakota
Every county in North Dakota is on this site, including Traill County, ND and Griggs County, ND. The full underlying dataset is downloadable directly, one row per county.