Marshall County, KS Shrink-Swell Risk
What Marshall County, KS's soil means for a foundation
Moderate
USDA's SSURGO data puts Marshall County, KS's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 5.9% across 68.7% of the county's surveyed land. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
This is a county figure, not a lot figure
USDA's survey covers the whole of Marshall County, KS at once, not any single address. 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 Marshall County.
Report cost vs. repair cost
With Marshall County, KS rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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.
Marshall County's rank among Kansas counties
Nationally, Marshall County, KS is the 142-most-constrained of 3,085 rated counties for shrink-swell soil. Within Kansas alone it ranks 14 of 105. Marshall County, KS is 900 square miles with a population of 9,950.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Rains County, TX and Decatur County, IN 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
More of Kansas
Every county in Kansas is on this site, including Wilson County, KS and Stafford County, KS. The full underlying dataset is downloadable directly, one row per county.