Skagway Municipality, AK Shrink-Swell Risk
Shrink-swell potential in Skagway Municipality, AK
Low
Soil across 100% of Skagway Municipality, AK comes back "Low" in USDA's shrink-swell data, averaging 0.18% 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 Skagway Municipality, AK - 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 Skagway Municipality will actually do.
Skagway Municipality: the real numbers
Skagway Municipality'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, Skagway Municipality, AK ranks 3,082 most-constrained nationally, and 10 of 11 within Alaska. The county spans 443 square miles, home to 1,119 people.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Pointe Coupee Parish, LA and Orleans County, NY 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 Alaska
Every county in Alaska is on this site, including Lake and Peninsula Borough, AK and Nome Census Area, AK. The full underlying dataset is downloadable directly, one row per county.