Mahtomedi's Seismic Design Category, explained

Mahtomedi carries Seismic Design Category A under USGS's ASCE 7-16 model. Lowest seismic design category. Building code requires no seismic-specific detailing here beyond ordinary construction practice. Nationally, Mahtomedi ranks above 3% of the 4,875 cities in this dataset for seismic hazard - the 3th percentile.

Where Mahtomedi sits in Minnesota

The raw figures: peak ground acceleration 0.022g, short-period spectral response 0.047g, 1-second spectral response 0.029g. Among 155 Minnesota cities in this dataset, Mahtomedi ranks 133 for seismic hazard, the 14th percentile within the state. About 8,199 people live in Mahtomedi, Minnesota.

What a retrofit costs in Mahtomedi

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

Earthquake insurance for a Mahtomedi 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 Mahtomedi address.

More on how this number was built

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