Huron County, MI Shrink-Swell Risk
Huron County, MI's soil, for shrink-swell risk
Low
Huron County, MI: USDA's soil survey rates 99.2% of the county "Low" for shrink-swell potential (1.28% linear extensibility). That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.
What Huron County's reading doesn't cover
Two lots a mile apart in Huron County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Huron County, MI 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.
Where this sits nationally
Nationally, Huron County, MI is the 2,717-most-constrained of 3,085 rated counties for shrink-swell soil. Within Michigan alone it ranks 50 of 83. Huron County covers 836 square miles and counts 30,780 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Cass County, ND and McNairy County, TN 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 Michigan
Every county in Michigan is on this site, including Tuscola County, MI and Ottawa County, MI. The full underlying dataset is downloadable directly, one row per county.