Jefferson, GA: what USGS's seismic model says

USGS's ASCE 7-16 seismic design model - the same standard building codes use - places Jefferson in Seismic Design Category C: Moderate seismic hazard. Code adds irregular-building restrictions and requires bracing of some nonstructural components (e.g. tall shelving, water heaters) in addition to structural detailing. Rank it against the rest of the country and Jefferson sits at the 70th percentile for seismic hazard among 4,875 US cities.

Jefferson by the numbers

USGS's underlying values for Jefferson: 0.103g peak ground acceleration, 0.202g at short period, 0.087g at 1 second. Within Georgia alone, Jefferson ranks 57 of 148 cities by seismic hazard - the 62th percentile in-state. Jefferson has a population of about 16,459.

Retrofit economics for Jefferson

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 Georgia 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 Georgia.

Earthquake insurance for a Jefferson home

A Jefferson 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 Jefferson's figures come from

Jefferson's Category C 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 C does and doesn't tell you about Jefferson.