Rush County, KS Shrink-Swell Risk
What Rush County, KS's soil means for a foundation
Moderate
USDA's SSURGO data puts Rush County, KS's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 4.03% across 72% of the county's surveyed land. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.
This is a county figure, not a lot figure
USDA's survey covers the whole of Rush County, KS at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
Report cost vs. repair cost
With Rush 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.
How Rush County, KS compares
Nationally, Rush County, KS is the 547-most-constrained of 3,085 rated counties for shrink-swell soil. Within Kansas alone it ranks 54 of 105. Rush County, KS is 718 square miles with a population of 2,810.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Orange County, FL and Pueblo County, CO 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 Decatur County, KS and Riley County, KS. The full underlying dataset is downloadable directly, one row per county.