Page County, IA Shrink-Swell Risk
Shrink-swell potential in Page County, IA
Moderate
Soil across 89.7% of Page County, IA comes back "Moderate" in USDA's shrink-swell data, averaging 5.02% linear extensibility. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Page County, IA - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Page County will actually do.
Page County: the real numbers
Page 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, Page County, IA ranks 290 most-constrained nationally, and 19 of 99 within Iowa. The county spans 535 square miles, home to 15,038 people.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Tyler County, WV and Sequatchie County, TN 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 Iowa
Every county in Iowa is on this site, including Crawford County, IA and Mahaska County, IA. The full underlying dataset is downloadable directly, one row per county.