Bethany, OK: what USGS's seismic model says

Under the seismic model IBC and ASCE 7 use for new construction, Bethany 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, Bethany ranks above 77% of the 4,875 cities in this dataset for seismic hazard - the 77th percentile.

Where Bethany sits in Oklahoma

The raw figures: peak ground acceleration 0.199g, short-period spectral response 0.326g, 1-second spectral response 0.082g. Among 75 Oklahoma cities in this dataset, Bethany ranks 15 for seismic hazard, the 81th percentile within the state. About 20,421 people live in Bethany, Oklahoma.

What a retrofit costs in Bethany

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

Earthquake insurance for a Bethany home

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 Bethany address.

More on how this number was built

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