Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Map Prepared by the ABAG Earthquake Program. April 2004.

Reproduced with permission, California Geological Survey from CD-ROM 2001-04 (2001), Official Map of Alquist-Priolo Earthquake Fault ZonesThis interactive map was created using digital files of AP EFZ quadrangles and is considered an electronic facsimile of the Official Alquist-Priolo Earthquake Fault Zone map. If there is any doubt or conflict with respect to the location of EFZ boundaries, the original clear-film overlay compiled by and on file with CGS is the official version of the map. Fault information in these digital files is not sufficient to serve as a substitute for the geological site studies required under Chapter 7.5 of Division 2 of the California Public Resources Code.For more information visit:http://www.consrv.ca.gov/CGS/rghm/ap/This map is available at:http://quake.abag.ca.gov/

Alquist-Priolo Earthquake Fault Zones

WaterMajor RoadsLocal Roads

1 inch equals 18.52 milesScale:

Earthquake Fault Zones

Greenville

San Andreas-North Golden GateSan Andreas -- PeninsulaSan Andreas -- Santa CruzRodgers CreekNorth HaywardSouth HaywardNorthern CalaverasCentral Calaveras

MaacamaWest NapaConcord/Green ValleyNorthern San Gregorio

Sargent

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

San Andreas-North Golden Gate Earthquake - Magnitude 7.5

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 2

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

San Andreas-Peninsula Earthquake - Magnitude 7.2

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 3

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Model of the 1989 Loma Prieta Earthquake - Magnitude 6.9

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 4

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Text

Entire San Andreas (1906 Quake) - Magnitude 7.9

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 5

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Rodgers Creek Earthquake - Magnitude 7.0

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 6

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Rodgers Creek and North Hayward Earthquake - Magnitude 7.1

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 7

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

North Hayward Earthquake - Magnitude 6.5

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 8

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

South Hayward Earthquake - Magnitude 6.7

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 9

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

North and South Hayward Earthquake - Magnitude 6.9

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 10

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Northern Calaveras Earthquake - Magnitude 6.8

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 11

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Central Calaveras Earthquake - Magnitude 6.2

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 12

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Maacama Earthquake - Magnitude 6.6

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 13

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

West Napa Earthquake - Magnitude 6.5

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 14

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Concord-Green Valley Earthquake - Magnitude 6.7

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 15

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Greenville Earthquake - Magnitude 6.9

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 16

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Mount Diablo Thrust Earthquake - Magnitude 6.7

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 17

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Northern San Gregorio Earthquake - Magnitude 7.2

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 18

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Monte Vista Thrust Earthquake - Magnitude 6.6

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. Intensities may beincorrect by one unit higher or lower.This map is available athttp://quake.abag.ca.gov Source: ABAG Earthquake Program, June 2004

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.31 milesScale:

ABAGEarthquake Shaking Scenario

Plate 19

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

North and South Hayward Earthquake - Magnitude 6.9

Source: USGS, 2003The USGS ShakeMap scenario is provided for comparison with the ABAG earthquakeshaking scenario. For ease of comparison, ABAG changed the colors and legend of the ShakeMap to make them consistent with our map. The ShakeMap scenario lacks data for the northern sections of Sonoma and Napa counties. These sections appear blank on the map. For more information regarding ShakeMaps for earthquake scenarios visit: http://earthquake.usgs.gov/shakemap/nc/shake/archive/scenario.htmlThis map is for planning use only. This map is available athttp://quake.abag.ca.gov

Modified Mercalli IntensityShaking Severity LevelX-Very ViolentIX-ViolentVIII-Very StrongVII-StrongVI-ModerateV-Light

1 inch equals 18.86 milesScale:

USGSShakeMap Scenario

Plate 20

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DanielleHTypewritten TextPlate 20

DanielleHTypewritten Text

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

Santa CruzCounty

LakeCountyPlacerCounty

San BenitoCountyMap Prepared by the ABAG Earthquake Program. April 2004.

Source: This interactive map is a derivative of the Probabilistic Seismic Hazard Map that was produced by the California Seismic Safety Commission, California Geological Survey, California Office of Emergency Services and US Geological Survey, 2003The colors on this map have been changed from the original map. For more information visit:http://www.consrv.ca.gov/CGS/rghm/psha/This map is intended for planning use only and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available at http://quake.abag.ca.gov/

Earthquake Shaking Potential for the San Francisco Bay Region

1 inch = 17.13 milesScale:

Level of Earthquake HazardThese regions are near major, active faults and will on average experience stronger earthquake shaking more frequently. This intense shaking can damage even strong, modern buildings.

These regions are distant from known, active faults and will experience lower levels of shaking less frequently. In most earthquakes, only weaker, masonry buildings would be damaged. However, very infrequent earthquakes could still cause strong shaking here.

Water

Increasing Intensity

Major RoadsLocal Roads

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DanielleHTypewritten TextPlate 21

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty PlacerCounty

MercedCounty

MendocinoCounty SutterCounty

Santa CruzCounty

San BenitoCounty

ColusaCounty

This map is intended for planning use only andis not intended to be site-specific. Rather, itdepicts the general hazard level of aneighborhood and the relative hazard levelsfrom community to community. Hazard levelsare less likely to be accurate if yourneighborhood is on or near the border betweentwo zones. This information is not a substitutefor a site-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Sources:This map is based on work by William Lettis & Associates, Inc. and USGS.USGS Open-File Report 00-444, Knudsen & others, 2000 andUSGS Open-File Report 2006-1037, Witter & others, 2006For more information visit:http://pubs.usgs.gov/of/2000/of00-444/http://pubs.usgs.gov/of/2006/1037/

1 inch = 19.55 milesScale:

Liquefaction SusceptibilityMap

Local RoadsMajor Roads

Very HighHighModerateLowVery Low

Susceptibility Level

DanielleHTypewritten TextPlate 22

Santa Clara Co.

Alameda Co.

Contra Costa Co.

San Mateo Co.

San Francisco

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. For more detailed information regarding this map,please visit the CGS website at http://gmw.consrv.ca.gov/shmp/Source:California Geological Survey, 2004This map is available athttp://quake.abag.ca.gov

1 inch equals 9.42 milesScale:

California Geological SurveySeismic Hazard Zones of Required Investigation

Liquefaction ZonesAreas where historical occurrenceof liquefaction, or local geological, geotechnical and ground-water conditions indicate a potential for permanent ground displacements such that mitigation as defined in Public Resources Code Section 2693(c) would be required.Mapping in progressMapping PlannedArea Not Yet Evaluated

Plate 23

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

San Andreas-North Golden Gate Earthquake - Magnitude 7.5

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

San Andreas-Peninsula Earthquake - Magnitude 7.2

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 25

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Model of the 1989 Loma Prieta Earthquake - Magnitude 6.9

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 26

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Entire San Andreas (1906 Quake) - Magnitude 7.9

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 27

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Rodgers Creek Earthquake - Magnitude 7.0

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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DanielleHTypewritten TextPlate 28

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Rodgers Creek and North Hayward Earthquake - Magnitude 7.1

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 29

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

North Hayward Earthquake - Magnitude 6.5

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 30

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

South Hayward Earthquake - Magnitude 6.7

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

DanielleHTypewritten TextPlate 31

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

North and South Hayward Earthquake - Magnitude 6.9

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Northern Calaveras Earthquake - Magnitude 6.8

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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Contra Costa Co.Marin Co.

SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Central Calaveras Earthquake - Magnitude 6.2

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Maacama Earthquake - Magnitude 6.6

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

West Napa Earthquake - Magnitude 6.5

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Concord-Green Valley Earthquake - Magnitude 6.7

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Greenville Earthquake - Magnitude 6.9

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Mount Diablo Thrust Earthquake - Magnitude 6.7

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Northern San Gregorio Earthquake - Magnitude 7.2

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

MercedCounty

PlacerCountyMendocinoCounty

Santa CruzCounty

SutterCounty

San BenitoCounty

Monte Vista Thrust Earthquake - Magnitude 6.6

1 inch = 19.51 milesScale:

Liquefaction HazardMap

Local RoadsMajor Roads

HighModerateModerately LowVery Low

Liquefaction Hazard Level

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general hazard levelof a neighborhood and the relative hazardlevels from community to community.Hazard levels are less likely to be accurateif your neighborhood is on or near theborder between two zones. Thisinformation is not a substitute for asite-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Source:ABAG, 2001

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

San Mateo Co.

San Francisco

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. For more detailed information regarding this map,please visit the CGS website at http://gmw.consrv.ca.gov/shmp/Source:California Geological Survey, 2004This map is available athttp://quake.abag.ca.gov

1 inch equals 9.30 miles

Scale:

California Geological SurveySeismic Hazard Zones of Required Investigation

Area Not Yet EvaluatedMapping Planned

Landslide ZonesAreas where previous occurrenceof landslide movement, or localtopographic, geological, geotechnicaland subsurface water conditions indicate a potential for permanent ground displacements such that mitigation as defined in Public Resources Code Section 2693(c) would be required.

Mapping In Progress

Plate 42

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty PlacerCounty

San BenitoCounty

MendocinoCounty

MontereyCounty

MercedCounty

SutterCounty

Santa CruzCounty

Tsunami Inundation Area

This tsunami inundation planning map for the San Francisco Bay Region is based onmodeling a number of potential earthquakesources and hypothetical extreme undersea,near-shore landslide sources. This data was produced by CalEMA and is intended for local jurisdictional, coastal planning uses only. Data for north coastal Sonoma County is not yet available. For more informationvisit http://quake.abag.ca.gov/tsunami.Source: California Emergency ManagementAgency, Coastal Region (2009)This map is available athttp://quake.abag.ca.gov

Tsunami Inundation Emergency PlanningMap for the San FranciscoBay Region

Shaded to show topographical relief

1 inch = 21.21 milesScale:

Urbanized Area

Disclaimer: The California EmergencyManagement Agency (CalEMA), the Universityof Southern California (USC), and the CaliforniaGeological Survey (CGS) make norepresentation or warranties regarding theaccuracy of this inundation map nor the datafrom which the map was derived. Neither theState of California nor USC shall be liableunder any circumstances for any direct, indirect,special, incidental or consequential damageswith respect to any claim by any user or anythird party on account of or arising from the useof this map.

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

Santa CruzCounty

PlacerCounty

MercedCounty

MendocinoCounty SutterCounty

San BenitoCounty

Flood Hazard Areas

Sources:Flood Zones - FEMA Q3 (2003) and DFIRM (2009)Base Data - TeleAtlas (2008)The product has been designed to support planningactivities.A more detailed version of this map is available athttp://quake.abag.ca.gov

FEMAFlood Hazard Areas

Shaded to show topographical relief

FloodZone Description

1 inch = 17.53 milesScale:

This code identifies an areainundated by 0.2% annualchance flooding; an area inundated by 1% annualchance flooding with average depths of less than 1 foot or with drainageareas less than 1 square mile;or an area protected by leveesfrom 1% annual chance flooding.

Zone X500

This code identifies an areainundated by 1% annualchance flooding.Zone A

This code identifies an areainundated by 1% annual chance flooding with velocity hazard (wave action).

Zone V

Zone X500- (500 yr. Flood Zone or other concerns)

Detailed FEMA Explanation

Zone A- (100 yr. Flood Zone)Zone V- (100 yr. Flood Zone)

Urbanized Area

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

Santa CruzCounty

LakeCountyPlacerCounty

MendocinoCounty SutterCounty

San BenitoCounty

This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available athttp://quake.abag.ca.gov For more detailed informtion regarding this map, please visit the USGS website at http://wrgis.wr.usgs.gov/open-file/of97-745/Source:USGS Open File Report 97-745 E, 1997

1 inch = 17.13 milesScale:

Principal Debris-FlowSource Areas in the San Francisco Bay RegionDebris-Flow Source AreaUrban Footprint

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

This map is intended for planning use only, and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available athttp://quake.abag.ca.gov For more detailed informtion regarding this map,please visit the USGS website at http://wrgis.wr.usgs.gov/open-file/of97-745/Source:USGS Open File Report 97-745 E, 1997

1 inch equals 18.67 milesScale:

Summary Distribution of Slides and Earth Flowsin the San FranciscoBay RegionMostly LandslidesMany LandslidesFlatlandFew LandslidesVery Few Landslides

Plate 46

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty PlacerCounty

Santa CruzCounty

MendocinoCounty SutterCounty

San BenitoCounty

Wildland Urban Interface - Fire Threatened Communities

Local fire jurisdictions may have identified additional fire hazard areas, especially in communities adjacent to wildland. This map is intended for planning use onlyand is not intended to be site-specific.Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available athttp://quake.abag.ca.gov Source:California Department of Forestryand Fire Protection, 2003

Urbanized Area

Community at Risk

1 inch = 17.81 miles

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

Santa CruzCounty

PlacerCountyMendocinoCounty SutterCounty

San BenitoCounty

Fire Threat in the San Francisco Bay Region

This map focuses on wildland fuels in State Responsibility Areas, that is, where the California Department of Forestry has primary jurisdiction for wildland fire response. Local fire jurisdictions may have identified additional fire hazard areas, especially in communities adjacent to wildland. This map is intended for planning use onlyand is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available athttp://quake.abag.ca.gov Combines expected fire frequency with potential fire behavior to create4 threat classesSource:California Department of Forestryand Fire Protection, 2005

1 inch = 17.54 miles

ExtremeVery HighHighModerateLittle or No Threat

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Santa Clara Co.

Alameda Co.

Contra Costa Co.

Solano Co.

Napa Co.Sonoma co.

Marin Co.

San Mateo Co.

San Francisco

Fire Perimeters - 1950 to Present

This map is intended for planning use only and is not intended to be site-specific. Rather, it depicts the general risk within neighborhoods and the relative risk from community to community. This map is available athttp://quake.abag.ca.gov Source:California Department of Forestryand Fire Protection, 2004

Fire PerimeterUrbanized Area

1 inch equals 19.09 miles

Plate 49

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty

Santa CruzCounty

PlacerCountyMendocinoCounty SutterCounty

San BenitoCounty

Distribution of Wildland-UrbanInterface Housing Unit Density

This map is intended for planning use only.Map is available at http://quake.abag.ca.gov Source:California Department of Forestryand Fire Protection, 2003http://frap.cdf.ca.gov/

1 inch = 17.47 miles

Rural (1 unit/5 acres to 1 unit/20 acres)Interface (1 unit/acre to 1 unit/5 acres)Urban (greater than 1 unit/acre)

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

Santa CruzCounty

LakeCountyPlacerCounty

MendocinoCounty SutterCounty

San BenitoCounty

Fire-related Risks to Ecosystem Health as Measured by Condition Class

Condition Classes are defined as the relative risk of losing key componentsthat define an ecosystem (Hardy et al., 2001).This map is intended for planning use only.Map is available at http://quake.abag.ca.gov Source:California Department of Forestryand Fire Protection, 2003http://frap.cdf.ca.gov/

1 inch = 17.07 miles

Low - Condition Class 1Moderate - Condition Class 2High - Condition Class 3Non-Forests & Rangelands

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

Santa CruzCounty

LakeCountyPlacerCounty

San BenitoCounty

Post-Wildfire Soil Erosion Potential

This map is based on data created by CDF'sFire and Resource Assessment Program that shows estimated erosion potential after a wildfire,based on the Universal Soil Loss Equation. This map is intended for planning use onlyand is not intended to be site specific.Map is available at http://quake.abag.ca.gov Source:California Department of Forestryand Fire Protection, 2004http://frap.cdf.ca.gov/

1 inch = 16.74 miles

Area without a Fuel Rank(generally Ag or Barren)Water and Urban AreasLowModerateHigh

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Santa Clara Co.

Alameda Co.

Contr a Costa Co.

Solano Co.

Napa Co.

Sonoma co.

Marin Co.

San M ateo Co.

San Francisco

Areas that can be inundatedby any one of:

This map is intended for planning use onlyand is not intended to be site specific. Rather it depicts the general risk within neighborhoods and the relative risk fromcommunity to community. This hazard map is generalized from mapsdam owners are required to prepare and file with the State Office of Emergency Services. Source: ABAG, 1995This map is available athttp://quake.abag.ca.gov

Dam FailureInundation Areas

Shaded to show topographical relief

1 inch equals 18.74 milesScale:

3 different dams4 different dams5 different dams

Urbanized Area1 dam only2 different dams

Dam Location

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SolanoCounty

SonomaCounty

AlamedaCounty

MarinCounty

Santa ClaraCounty

NapaCounty

Contra CostaCounty

San MateoCounty

San JoaquinCounty

SacramentoCounty

YoloCounty

Source: Inundation data from Knowles, 2008.Additional salt pond elevation data by Siegeland Bachand, 2002.This map is available athttp://quake.abag.ca.gov

Shoreline Areas Vulnerableto Sea Level Rise in theSan Francisco Bay Region

Shaded to show topographical relief

1 inch = 11.88 milesScale:

Disclaimer: Inundation data does not accountfor existing shoreline protection or wave activity.This map is for informational purposes only.Users, by their use, agree to hold harmless andblameless the Association of Bay AreaGovernments along with the State of Californiaand its representatives and its agents for anyliability associated with its use in any form. Themaps and data shall not be used to assessactual coastal hazards, insurance requirements,or property values or be used in lieu of FloodInsurance Rate Maps issued by teh FederalEmergency Management Agency (FEMA).

Urbanized Area

Area vulnerable to an approximate16-inch sea level riseArea vulnerable to an approximate55-inch sea level rise

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

Santa CruzCounty

LakeCountyPlacerCounty

FEMA Flood Hazard Areas

Sources:Repetitive Loss Properties - FEMA National FloodInsurance Program and ABAG (2004)Flood Zones - FEMA Q3 (2003) and DFIRM (2009)Flood DataBase Data - TeleAtlas (2008)The product has been designed to support planningactivities.A more detailed version of this map is available athttp://quake.abag.ca.gov

Repetitive Loss Properties in Floods

Shaded to show topographical relief

1 inch = 16.84 milesScale:

Zone X500- (500 yr. Flood Zone or other concerns)

Zone A- (100 yr. Flood Zone)Zone V- (100 yr. Flood Zone)

Urbanized AreaCreeks, Streams and RiversRepetitive Loss Property!

FloodZone Description

This code identifies an areainundated by 0.2% annualchance flooding; an area inundated by 1% annualchance flooding with average depths of less than 1 foot or with drainageareas less than 1 square mile;or an area protected by leveesfrom 1% annual chance flooding.

Zone X500

This code identifies an areainundated by 1% annualchance flooding.Zone A

This code identifies an areainundated by 1% annual chance flooding with velocity hazard (wave action).Zone V

Detailed FEMA Explanation

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SonomaCounty

SolanoCounty

Santa ClaraCounty

NapaCounty

AlamedaCounty

MarinCountyContra CostaCounty

YoloCounty

San JoaquinCounty

SacramentoCounty

StanislausCounty

LakeCounty PlacerCounty

MercedCounty

MendocinoCounty SutterCounty

Santa CruzCounty

San BenitoCounty

ColusaCounty

MontereyCounty

This map is intended for planning use only andis not intended to be site-specific. Rather, itdepicts the general hazard level of aneighborhood and the relative hazard levelsfrom community to community. Hazard levelsare less likely to be accurate if yourneighborhood is on or near the border betweentwo zones. This information is not a substitutefor a site-specific investigation by a licensedprofessional.This map is available athttp://quake.abag.ca.gov Sources:This map is based on work by William Lettis & Associates, Inc. and USGS.USGS Open-File Report 00-444, Knudsen & others, 2000 andUSGS Open-File Report 2006-1037, Witter & others, 2006For more information visit:http://pubs.usgs.gov/of/2000/of00-444/http://pubs.usgs.gov/of/2006/1037/

1 inch = 19.66 milesScale:

Liquefaction SusceptibilityMap

Local RoadsMajor Roads

Very HighHighModerateLowVery Low

Susceptibility Level

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Plate 1 - Fault Surface Rupture HazardPlate 2 -San Andreas North Golden Gate ABAG Earthquake Shaking ScenarioPlate 3 - San Andreas Peninsula ABAG Earthquake Shaking ScenarioPlate 4 - San Andreas Santa Cruz ABAG Earthquake Shaking ScenarioPlate 5 - Entire San Andreas ABAG Earthquake Shaking ScenarioPlate 6 - Rodgers Creek ABAG Earthquake Shaking ScenarioPlate 7 - Rodgers Creek and North Hayward ABAG Earthquake Shaking ScenarioPlate 8 - North Hayward ABAG Earthquake Shaking ScenarioPlate 9 - South Hayward ABAG Earthquake Shaking ScenarioPlate 10 - North and South Hayward ABAG Earthquake Shaking ScenarioPlate 11 - Northern Calaveras ABAG Earthquake Shaking ScenarioPlate 12 - Central Calaveras ABAG Earthquake Shaking ScenarioPlate 13 - Maacama ABAG Earthquake Shaking ScenarioPlate 14 - West Napa ABAG Earthquake Shaking ScenarioPlate 15 - Concord Green Valley ABAG Earthquake Shaking ScenarioPlate 16 - Greenville ABAG Earthquake Shaking ScenarioPlate 17 - Mount Diablo ABAG Earthquake Shaking ScenarioPlate 18 - Northern SanGregorio ABAG Earthquake Shaking ScenarioPlate 19 - Monte Vista ABAG Earthquake Shaking ScenarioPlate 20 - USGS ShakeMap Scenario North and South HaywardPlate 21 - Earthquake Shaking PotentialPlate 22 - Liquefaction SusceptibilityPlate 23 - CGS Liquefaction ZonesPlate 24 - San Andreas-North Golden Gate Liquefaction Hazard MapPlate 25 - San Andreas-Peninsula Liquefaction Hazard MapPlate 26 - San Andreas-Santa Cruz Liquefaction Hazard MapPlate 27 - Entire San Andreas 1906 Quake Liquefaction Hazard MapPlate 28 - Rodgers Creek Liquefaction Hazard MapPlate 29 - Rodgers Creek and North Hayward Liquefaction Hazard MapPlate 30 - North Hayward Liquefaction Hazard MapPlate 31 - South Hayward Liquefaction Hazard MapPlate 32 - North and South Hayward Liquefaction Hazard MapPlate 33 - Northern Calaveras Liquefaction Hazard MapPlate 34 - Central Calaveras Liquefaction Hazard MapPlate 35 - Maacama Liquefaction Hazard MapPlate 36 - West Napa Liquefaction Hazard MapPlate 37 - Concord-Green Valley Liquefaction Hazard MapPlate 38 - Greenville Liquefaction Hazard MapPlate 39 - Mount Diablo Liquefaction Hazard MapPlate 40 - Northern San Gregorio Liquefaction Hazard MapPlate 41 - Monte Vista Liquefaction Hazard MapPlate 42 - CGS Earthquake Induced LandslidesPlate 43 - Tsunami Evacuation Planning AreasPlate 44 - FEMA Flood Hazard AreasPlate 45 - Debris Flow Source AreasPlate 46 - Existing LandslidesPlate 47 - Wildland Urban Interface Fire ThreatPlate 48 - Wildfire ThreatPlate 49 - Historical Fire PerimetersPlate 50 - Fire-related Risks to Ecosystem HealthPlate 51 - Wildland Urban Interface Housing Unit DensityPlate 52 - Post-Fire Soil Erosion PotentialPlate 53 - Dam Failure Inundation AreasPlate 54 - Sea Level RisePlate 55 - Repetitive Loss Properties in Floods