Resources

CSA is well known for the geologic, ground movement potential and hazard maps we have produced for several San Francisco Bay area communities.  The following is a selection of our most requested maps that we make freely available to the public.

Geologic Cross Sections A-A and B-B, Congress Springs, CA (1.2 MB)
Geologic Map, Congress Springs, CA (4.3 MB)
Movement Potential Map, Congress Springs, CA (5.7 MB)

Geologic and Seismic Hazards Map, Cupertino, CA (2.1 MB)

Geotechnical and Seismic Hazard Zones, Los Altos Hills, CA (11.8 MB)
Geologic Map, Los Altos Hills, CA (4.7 MB)

Ground Movement Potential Map, Town of Portola Valley, CA (6.9 MB)
Geologic Map, Town of Portola Valley, CA (8.2 MB)

 Ground Movement Potential Map, City of Saratoga (3.0 MB)

Publications

 Geologic and Geotechnical Factors Controlling Incipient Slope Instability at a Gravel Quarry, Livermore Basin, California (7.6 MB)

 Reassessment of the 1906 San Andreas Fault Rupture in Portola Valley, California, from Synthesis of Lidar and Historical Data (3.8 MB)

The Northridge Bluff Landslide: Rapid Bluff Retreat Associated with a Major Coastal Landslide in Daly City California (4.9 MB)

Unstable Slopes in the Franciscan Complex Terrane: Lessons learned from Urban Quarry Slopes in the San Francisco Bay Area (2 MB)

The Santiago Landslide and Associated Ridge-top Graben (Sackungen): Implications for Paleoseismic Landslide Studies (1 MB)

The Use of Large-Diameter Boreholes and Downhole Logging Methods in Landslide Investigations (1.4 MB)

Mitigation of 1998 El Nino Sea Cliff Failure, Pacifica, California (1 MB)