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CGS / Regional Geologic Hazards and Mapping Program / AP

California Geological Survey - Alquist-Priolo Earthquake Fault Zones 


How to Obtain Copies of the Maps

The Earthquake Fault Zone maps are available for reference only at three CGS Offices:

Sacramento Area

DOC/CGS
Library and Information Desk
801 K Street, MS 14-34
Sacramento, CA 95814-3532
Phone: 916-327-1850

 

Los Angeles Area

DOC/CGS
Southern California Regional Office
655 S. Hope St. #700
Los Angeles, CA 90017-2321
Phone: 213-239-0878

 

San Francisco Bay Area

DOC/CGS
Bay Area Regional Office
Earth Science Information Center / Map Sales
Building 3, Room 3-121
345 Middlefield Road, MS 520
Menlo Park, CA 94025
Phone: (650) 688-6327

 

Earthquake Fault Hazard Zone maps may be purchased from:

BPS Reprographic Services
945 Bryant Street
San Francisco, CA 94103
Phone: 415-512-6550

DIGITAL IMAGES OF OFFICIAL MAPS OF
ALQUIST-PRIOLO EARTHQUAKE FAULT ZONES OF CALIFORNIA
Available on CD-ROM

Earthquake Fault Zone Regions index mapThe California Geological Survey is pleased to announce the release of three  (3) CD-ROMs containing Digital Images of Official Maps of Alquist-Priolo Earthquake Fault Zones of California. The CD's are sold separately and contain .pdf images of Fault Zone maps covering the areas noted below. Also included on each CD is a digital version of Special Report 42, Fault-Rupture Hazard Zones in California, which explains the Alquist-Priolo Earthquake Fault Zoning (AP) Act, the zoning program, and associated regulations. The maps and text can be viewed with Adobe Acrobat Reader 4.0, which is included on the CD's. Please note that these are digital images only, and do not contain GIS data files. Click here to view the license agreement, disclaimers and related information contained in the "read me" files for each of these CD's.

Each CD covers different regions of California:

  • DMG CD-2000-005: Northern and Eastern Region, contains maps for Alpine, Butte, Humboldt, Inyo, Lassen, Mendocino, Modoc, Mono, Shasta, and Siskiyou counties.

  • DMG CD-2000-004: Central Coastal Region, contains maps for Alameda, Contra Costa, Fresno, Kern, Lake, Napa, San Luis Obispo, San Mateo, Santa Clara, Santa Cruz, Solano, Sonoma, Stanislaus, and Yolo counties.

  • DMG CD-2000-003: Southern Region, contains maps for Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, and Ventura counties.

Each CD is available for $30.00. Click here for information on how to order.

The maps must be ordered by name, so refer to the Earthquake Fault Zone map index in Special Publication 42.

Some counties and cities also sell Earthquake Fault Zone maps. Contact your local agency for information.