McPherson County, KS Shrink-Swell Risk

Shrink-swell potential in McPherson County, KS

Moderate

Soil across 64.6% of McPherson County, KS comes back "Moderate" in USDA's shrink-swell data, averaging 5.86% 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 McPherson County, KS - 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 McPherson County will actually do.

McPherson County: the real numbers

McPherson 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.

How McPherson County, KS compares

Among the 3,085 rated counties on this site, McPherson County, KS ranks 147 most-constrained nationally, and 16 of 105 within Kansas. McPherson County covers 898 square miles and counts 30,334 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Onslow County, NC and Pleasants County, WV 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 Kansas

Every county in Kansas is on this site, including Edwards County, KS and Greenwood County, KS. The full underlying dataset is downloadable directly, one row per county.