# Maps

## Available Downloads

Region Name | Return Period | Spectral Acceleration | Download |
---|---|---|---|

Conterminous U.S. | 10% 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 | Peak Ground Acceleration | [GIF | PS | PDF] |

Conterminous U.S. | 2% 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. | 10% in 50 Years | 5Hz (0.2 Seconds) | [GIF | PS | PDF] |

Western U.S. | 10% 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. | 2% in 50 Years | 5Hz (0.2 Seconds) | [GIF | PS | PDF] |

Western U.S. | 2% in 50 Years | 1Hz (1.0 Second) | [GIF | PS | PDF] |

Western U.S. | 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 | 10% in 50 Years | Peak Ground Acceleration | [GIF | PS | PDF] |

California-Nevada | 10% in 50 Years | 5Hz (0.2 Seconds) | [GIF | PS | PDF] |

California-Nevada | 2% in 50 Years | 5Hz (0.2 Seconds) | [GIF | PS | PDF] |

California-Nevada | 10% in 50 Years | 1Hz (1.0 Second) | [GIF | PS | PDF] |

California-Nevada | 2% in 50 Years | Peak Ground Acceleration | [GIF | PS | PDF] |

Pacific Northwest | 10% 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 | 1Hz (1.0 Second) | [GIF | PS | PDF] |

Pacific Northwest | 10% in 50 Years | Peak Ground Acceleration | [GIF | PS | PDF] |

Pacific Northwest | 2% in 50 Years | Peak Ground Acceleration | [GIF | PS | PDF] |

Pacific Northwest | 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. | 10% 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 | 5Hz (0.2 Seconds) | [GIF | PS | PDF] |

Central/Eastern U.S. | 10% in 50 Years | 1Hz (1.0 Second) | [GIF | PS | PDF] |

Central/Eastern U.S. | 2% 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 (V_{s}^{30} = 760 m/s).