Denali Borough, AK Shrink-Swell Risk

Shrink-swell potential in Denali Borough, AK

Low

Soil across 100% of Denali Borough, AK comes back "Low" in USDA's shrink-swell data, averaging 0.31% 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 Denali Borough, AK - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Denali Borough: the real numbers

Denali Borough'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, Denali Borough, AK ranks 3,070 most-constrained nationally, and 9 of 11 within Alaska. Denali Borough covers 12,640 square miles and counts 1,621 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. McLeod County, MN and Jefferson County, CO 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 Chugach Census Area, AK and Skagway Municipality, AK. The full underlying dataset is downloadable directly, one row per county.