Dodge County, WI Shrink-Swell Risk
Shrink-swell potential in Dodge County, WI
Moderate
Soil across 55.7% of Dodge County, WI comes back "Moderate" in USDA's shrink-swell data, averaging 3.17% 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 Dodge County, WI - 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 Dodge County will actually do.
Dodge County: the real numbers
Dodge 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.
Dodge County's rank among Wisconsin counties
Among the 3,085 rated counties on this site, Dodge County, WI ranks 1,069 most-constrained nationally, and 12 of 72 within Wisconsin. Dodge County covers 876 square miles and counts 88,635 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Presidio County, TX and Jackson County, MO 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 Wisconsin
Every county in Wisconsin is on this site, including Milwaukee County, WI and Oconto County, WI. The full underlying dataset is downloadable directly, one row per county.