Leavenworth County, KS Shrink-Swell Risk
Shrink-swell potential in Leavenworth County, KS
Moderate
Soil across 59.4% of Leavenworth County, KS comes back "Moderate" in USDA's shrink-swell data, averaging 5.96% 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 Leavenworth 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 Leavenworth County will actually do.
Leavenworth County: the real numbers
Leavenworth 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 Leavenworth County, KS compares
Among the 3,085 rated counties on this site, Leavenworth County, KS ranks 135 most-constrained nationally, and 11 of 105 within Kansas. Leavenworth County, KS is 463 square miles with a population of 84,670.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Staunton city, VA and Venango 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 Butler County, KS and Decatur County, KS. The full underlying dataset is downloadable directly, one row per county.