Fond du Lac County, WI Shrink-Swell Risk

What Fond du Lac County, WI's soil means for a foundation

Moderate

USDA's SSURGO data puts Fond du Lac County, WI's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.18% across 50.1% of the county's surveyed land. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

This is a county figure, not a lot figure

USDA's survey covers the whole of Fond du Lac County, WI at once, not any single address. 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 Fond du Lac County.

Report cost vs. repair cost

With Fond du Lac County, WI rating "Moderate", 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.

Fond du Lac County's rank among Wisconsin counties

Nationally, Fond du Lac County, WI is the 1,059-most-constrained of 3,085 rated counties for shrink-swell soil. Within Wisconsin alone it ranks 11 of 72. Fond du Lac County, WI is 720 square miles with a population of 104,269.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Wheatland County, MT and Franklin County, MA 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 Wisconsin

Every county in Wisconsin is on this site, including Pierce County, WI and Iron County, WI. The full underlying dataset is downloadable directly, one row per county.