Lyon County, MN Shrink-Swell Risk

Shrink-swell potential in Lyon County, MN

Moderate

Soil across 48.6% of Lyon County, MN comes back "Moderate" in USDA's shrink-swell data, averaging 3.46% 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 Lyon County, MN - never a reading for one specific parcel. 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 Lyon County.

Lyon County: the real numbers

Lyon 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.

Lyon County's rank among Minnesota counties

Among the 3,085 rated counties on this site, Lyon County, MN ranks 869 most-constrained nationally, and 19 of 87 within Minnesota. Lyon County, MN is 714 square miles with a population of 25,577.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Brown County, KS and Hutchinson County, TX 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 Minnesota

Every county in Minnesota is on this site, including Stevens County, MN and Clay County, MN. The full underlying dataset is downloadable directly, one row per county.