Natrona County, WY Shrink-Swell Risk

Natrona County's SSURGO shrink-swell reading

Moderate

In Natrona County, WY, 58.6% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.23% 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

Natrona 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 Natrona County.

Budgeting for Natrona County, WY

Natrona 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, Natrona County, WY ranks 1,021 most-constrained nationally, and 4 of 23 within Wyoming. Natrona County, WY is 5,341 square miles with a population of 80,410.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Hinsdale County, CO and Windham County, VT 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 Wyoming

Every county in Wyoming is on this site, including Platte County, WY and Weston County, WY. The full underlying dataset is downloadable directly, one row per county.