Springville, UT: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Springville 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. That puts Springville in the 94th percentile nationally for seismic hazard - higher than 94% of the 4,875 US cities USGS was checked against here.

Springville by the numbers

USGS's underlying values for Springville: 0.642g peak ground acceleration, 1.407g at short period, 0.521g at 1 second. Within Utah alone, Springville ranks 17 of 95 cities by seismic hazard - the 83th percentile in-state. Springville has a population of about 36,027.

Bracing and bolting: the actual cost

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 Utah 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 Utah.

What this means for insurance

A Springville 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 Springville's figures come from

Springville'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 Springville.