Kittitas County, WA Shrink-Swell Risk

Shrink-swell potential in Kittitas County, WA

Low

Soil across 65.6% of Kittitas County, WA comes back "Low" in USDA's shrink-swell data, averaging 2.4% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Kittitas County, WA - 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 Kittitas County will actually do.

Kittitas County: the real numbers

Kittitas 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, Kittitas County, WA ranks 1,645 most-constrained nationally, and 5 of 39 within Washington. Kittitas County, WA is 2,297 square miles with a population of 48,172.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Nuckolls County, NE and Etowah County, AL 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 Washington

Every county in Washington is on this site, including Asotin County, WA and Clallam County, WA. The full underlying dataset is downloadable directly, one row per county.