Colfax County, NE Shrink-Swell Risk
What Colfax County, NE's soil means for a foundation
Moderate
USDA's SSURGO data puts Colfax County, NE's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.72% across 70.7% 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 Colfax County, NE at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Colfax County will actually do.
Report cost vs. repair cost
With Colfax 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.
Where this sits nationally
Nationally, Colfax County, NE is the 715-most-constrained of 3,085 rated counties for shrink-swell soil. Within Nebraska alone it ranks 30 of 93. Colfax County, NE is 411 square miles with a population of 10,826.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Callaway County, MO and Tippah County, MS 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 Perkins County, NE and Gage County, NE. The full underlying dataset is downloadable directly, one row per county.