Clarksville, AR: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Clarksville is 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. Nationally, Clarksville ranks above 71% of the 4,875 cities in this dataset for seismic hazard - the 71th percentile.

Where Clarksville sits in Arkansas

The raw figures: peak ground acceleration 0.111g, short-period spectral response 0.224g, 1-second spectral response 0.109g. Among 68 Arkansas cities in this dataset, Clarksville ranks 40 for seismic hazard, the 42th percentile within the state. About 9,606 people live in Clarksville, Arkansas.

Retrofit economics for Clarksville

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

More on how this number was built

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