Rigby, ID: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Rigby in Seismic Design Category D: High seismic hazard - this is the category most of coastal California, the Pacific Northwest, and other active fault regions fall into. Code mandates significant seismic detailing and restricts irregular structural configurations. This is the category the Brace + Bolt scope (cripple-wall bracing, foundation bolting) is built for. Rank it against the rest of the country and Rigby sits at the 80th percentile for seismic hazard among 4,875 US cities.

Rigby by the numbers

USGS's underlying values for Rigby: 0.161g peak ground acceleration, 0.376g at short period, 0.142g at 1 second. Within Idaho alone, Rigby ranks 9 of 36 cities by seismic hazard - the 77th percentile in-state. Rigby has a population of about 5,683.

What a retrofit costs in Rigby

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Idaho specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Idaho.

Insuring against this, not just retrofitting

A Rigby homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Rigby's figures come from

Rigby's Category D and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category D does and doesn't tell you about Rigby.