Nappanee, IN: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Nappanee 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 Nappanee sits at the 33th percentile for seismic hazard among 4,875 US cities.

Where Nappanee sits in Indiana

The raw figures: peak ground acceleration 0.055g, short-period spectral response 0.112g, 1-second spectral response 0.063g. Among 126 Indiana cities in this dataset, Nappanee ranks 115 for seismic hazard, the 9th percentile within the state. About 6,902 people live in Nappanee, Indiana.

Retrofit economics for Nappanee

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

What this means for insurance

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 Nappanee address.

More on how this number was built

The methodology guide covers exactly how USGS's public design-maps API produced Nappanee'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.