Johnson County, NE Shrink-Swell Risk

What Johnson County, NE's soil means for a foundation

Moderate

USDA's SSURGO data puts Johnson County, NE's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 5.89% across 64.1% 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 Johnson County, NE 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 Johnson County, NE 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 Johnson County, NE compares

Nationally, Johnson County, NE is the 144-most-constrained of 3,085 rated counties for shrink-swell soil. Within Nebraska alone it ranks 3 of 93. The county spans 376 square miles, home to 5,219 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Blue Earth County, MN and Fairfield County, SC 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 Nebraska

Every county in Nebraska is on this site, including Jefferson County, NE and Rock County, NE. The full underlying dataset is downloadable directly, one row per county.