Bowie's Seismic Design Category, explained

Bowie carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Bowie in the 43th percentile nationally for seismic hazard - higher than 43% of the 4,875 US cities USGS was checked against here.

Bowie by the numbers

The raw figures: peak ground acceleration 0.067g, short-period spectral response 0.13g, 1-second spectral response 0.042g. Among 46 Maryland cities in this dataset, Bowie ranks 28 for seismic hazard, the 40th percentile within the state. About 58,421 people live in Bowie, Maryland.

Retrofit economics for Bowie

Outside California, no state-level retrofit grant equivalent to Brace + Bolt could be found for Maryland. 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 Bowie address.

More on how this number was built

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