Howell County, MO Shrink-Swell Risk
Shrink-swell potential in Howell County, MO
Low
Soil across 92.2% of Howell County, MO comes back "Low" in USDA's shrink-swell data, averaging 1.72% linear extensibility. That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Howell County, MO - 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 Howell County will actually do.
Howell County: the real numbers
Howell 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, Howell County, MO ranks 2,259 most-constrained nationally, and 103 of 114 within Missouri. Howell County, MO is 927 square miles with a population of 40,762.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Black Hawk County, IA and Crawford County, MI 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 Missouri
Every county in Missouri is on this site, including Crawford County, MO and Marion County, MO. The full underlying dataset is downloadable directly, one row per county.