Maps

Available Downloads

Click a column header to sort by values in that column. Shift+Click to sort by multiple columns.
Region Name Return Period Spectral Acceleration Download
Conterminous U.S. 2% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Conterminous U.S. 10% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Conterminous U.S. 2% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Conterminous U.S. 2% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Conterminous U.S. 10% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Conterminous U.S. 10% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Western U.S. 2% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Western U.S. 2% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Western U.S. 10% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Western U.S. 10% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Western U.S. 2% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Western U.S. 10% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
California-Nevada 10% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
California-Nevada 10% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
California-Nevada 2% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
California-Nevada 2% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
California-Nevada 10% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
California-Nevada 2% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Pacific Northwest 2% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Pacific Northwest 10% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Pacific Northwest 10% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Pacific Northwest 2% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Pacific Northwest 2% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Pacific Northwest 10% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Central/Eastern U.S. 10% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Central/Eastern U.S. 10% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Central/Eastern U.S. 2% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]
Central/Eastern U.S. 2% in 50 Years Peak Ground Acceleration [GIF | PS | PDF]
Central/Eastern U.S. 2% in 50 Years 5Hz (0.2 Seconds) [GIF | PS | PDF]
Central/Eastern U.S. 10% in 50 Years 1Hz (1.0 Second) [GIF | PS | PDF]

Additional Information

Figures corresponding to the 2002 U.S. Geological Survey National Seismic Hazard Maps are available for individual download below, or can be downloaded in their entirety from this zip file (12Mb). These figures are probabilistic ground motion maps for Peak Ground Acceleration (PGA), 1Hz (1.0 second SA), and 5Hz (0.2 second SA). All ground motion probabilities are computed for the B/C Boundary (Vs30 = 760 m/s).