U.S. Seismic Hazard Maps - 2002 Edition

The 2002 U.S. Geological Survey (USGS) National Seismic Hazard Maps display earthquake ground motions for various probability levels across the United States and are applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. This update of the maps incorporates new findings on earthquake ground shaking, faults, seismicity, and geodesy. The resulting maps are derived from seismic hazard curves calculated on a grid of sites across the United States that describe the frequency of exceeding a set of ground motions.

Types: Citation; Tags: B/C site class boundary, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Hazard Maps, NEHRP, National Earthquake Hazard Reduction Program, National Seismic Hazard Maps, Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), United States, Vs30, building codes, earthquake ground motions, earthquake probability, geophysics, insurance rate structures, probabilistic hazard maps, public policy, risk assessments, seismic hazard, seismic hazard curves, seismic provisions, spectral accelerations, tectonic, Fewer tags

U.S. National Seismic Hazard Maps: Products and Tools

The U.S. Geological Survey’s National Seismic Hazard Map Program publishes a number of products and tools designed to provide details of earthquake shaking hazards and help engineers meet modern seismic design provisions for the construction of buildings, bridges, highways, and utilities that are better able to withstand earthquakes, not only saving lives but also enabling critical activities to continue with less disruption.

Types: Citation; Tags: B/C site class boundary, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Hazard Maps, NEHRP, National Earthquake Hazard Reduction Program, National Seismic Hazard Maps, Seismic Hazard Maps, USGS, United States, Vs30, building codes, earthquake ground motions, earthquake probability, geophysics, insurance rate structures, probabilistic hazard maps, public policy, risk assessments, seismic hazard, seismic hazard curves, seismic provisions, spectral accelerations, tectonic, Fewer tags

U.S. Seismic Hazard Maps - 2014 Edition

The 2014 U.S. Geological Survey (USGS) National Seismic Hazard Maps display earthquake ground motions for various probability levels across the United States and are applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The updated maps represent an assessment of the best available science in earthquake hazards and incorporate new findings on earthquake ground shaking, faults, seismicity, and geodesy. The USGS National Seismic Hazard Mapping Project developed these maps by incorporating information on potential earthquakes and associated ground shaking obtained from interaction in science and engineering workshops involving hundreds of participants,...

Types: Citation; Tags: B/C site class boundary, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Hazard Maps, NEHRP, National Earthquake Hazard Reduction Program, National Seismic Hazard Maps, Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), United States, Vs30, building codes, earthquake ground motions, earthquake probability, geophysics, insurance rate structures, probabilistic hazard maps, public policy, risk assessments, seismic hazard, seismic hazard curves, seismic provisions, spectral accelerations, tectonic, Fewer tags

U.S. Seismic Hazard Maps - 2008 Edition

The 2008 U.S. Geological Survey (USGS) National Seismic Hazard Maps display earthquake ground motions for various probability levels across the United States and are applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. This update of the maps incorporates new findings on earthquake ground shaking, faults, seismicity, and geodesy. The resulting maps are derived from seismic hazard curves calculated on a grid of sites across the United States that describe the frequency of exceeding a set of ground motions. The USGS National Seismic Hazard Mapping Project developed these maps by incorporating information on potential earthquakes and associated ground...

Types: Citation; Tags: B/C site class boundary, EHP, Earthquake Hazards Program, GHSC, Geologic Hazards Science Center, All tags... Hazard Maps, NEHRP, National Earthquake Hazard Reduction Program, National Seismic Hazard Maps, Seismic Hazard Maps, USGS, USGS Science Data Catalog (SDC), United States, Vs30, building codes, earthquake ground motions, earthquake probability, geophysics, insurance rate structures, probabilistic hazard maps, public policy, risk assessments, seismic hazard, seismic hazard curves, seismic provisions, spectral accelerations, tectonic, Fewer tags

Regional Minimum and Maximum Seismic Design Map Values

The comma-separated values (CSV) files below provide maximum and minimum SS, S1, and PGA values for each of the 50 states (plus Washington, D.C.), 3,222 counties, and most* of the 32,236 ZIP codes in the U.S. Geographic coordinates of these maxima and minima are also provided. The values and coordinates are based on the earthquake ground motion maps in, equivalently, the 2009 NEHRP Recommended Seismic Provisions, the 2010 ASCE-7 Standard, and the 2012 International Building Code.

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquake, GHSC, Seismic data, building codes, earthquake hazard, All tags... seismic design, Fewer tags