Clatsop County, OR Shrink-Swell Risk

Clatsop County's SSURGO shrink-swell reading

Low

In Clatsop County, OR, 65.5% of the surveyed soil carries a "Low" shrink-swell rating, 2.25% linear extensibility on average. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

Before you rely on this for one address

Clatsop County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Clatsop County will actually do.

Budgeting for Clatsop County, OR

Clatsop 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.

How Clatsop County, OR compares

Among the 3,085 rated counties on this site, Clatsop County, OR ranks 1,755 most-constrained nationally, and 24 of 36 within Oregon. Clatsop County, OR is 828 square miles with a population of 41,043.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Yakutat City and Borough, AK and Mitchell County, IA 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 Clackamas County, OR and Hood River County, OR. The full underlying dataset is downloadable directly, one row per county.