Lane County, OR Shrink-Swell Risk

Lane County's SSURGO shrink-swell reading

Moderate

In Lane County, OR, 46.3% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.18% linear extensibility on average. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

Before you rely on this for one address

Lane County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Lane County.

Budgeting for Lane County, OR

Lane 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Lane County, OR ranks 1,056 most-constrained nationally, and 10 of 36 within Oregon. Lane County, OR is 4,554 square miles with a population of 382,396.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Pocahontas County, IA and Daviess 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

Elsewhere in Oregon

Every county in Oregon is on this site, including Columbia County, OR and Clackamas County, OR. The full underlying dataset is downloadable directly, one row per county.