Franklin County, KS Shrink-Swell Risk

Shrink-swell potential in Franklin County, KS

Moderate

Soil across 47.1% of Franklin County, KS comes back "Moderate" in USDA's shrink-swell data, averaging 5.85% 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 Franklin County, KS - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Franklin County: the real numbers

Franklin 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Franklin County, KS ranks 150 most-constrained nationally, and 19 of 105 within Kansas. Franklin County, KS is 572 square miles with a population of 26,273.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Louisa County, IA and Mifflin County, PA 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 Cherokee County, KS and Greeley County, KS. The full underlying dataset is downloadable directly, one row per county.