East Moline, IL: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, East Moline is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and East Moline sits at the 28th percentile for seismic hazard among 4,875 US cities.

East Moline by the numbers

The raw figures: peak ground acceleration 0.047g, short-period spectral response 0.099g, 1-second spectral response 0.065g. Among 330 Illinois cities in this dataset, East Moline ranks 324 for seismic hazard, the 2th percentile within the state. About 20,995 people live in East Moline, Illinois.

Retrofit economics for East Moline

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Illinois. A typical retrofit still runs $5,000-$10,000 nationally, about $7,000 for a common single-family job.

Insuring against this, not just retrofitting

Outside California, earthquake coverage is typically sold as an endorsement added to a standard homeowners policy, not a separate product - worth asking about directly when getting a home-insurance quote for a East Moline address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced East Moline's numbers. The guide to what a Seismic Design Category actually means covers why a category is never a substitute for an engineer's assessment of one specific house.