This map shows the inundation hazard zones from dam and reservoir failure, based on modelling. The analysis was done by SFPUC in partnership with DEM and includes analysis of potential flooding from the following structures: Stanford heights - Agua Way and Teresita Blvd, Summit - La Avanzada St. and Palo Alto Ave., Sunset North - 28th ave and Ortega, Sunset South - 28th ave and Quintara, Sutro - Clarendon ave and Olympia Way, University Mound North - University St and Bacon St., University Mound South - University St. and Bacon St.

Map delineation of the different types and ages of Quaternary deposits supports evaluation of susceptibility to liquefaction. These areas can be expected to experience increased damage from ground shaking during an earthquake. The dataset displays where high and very high liquefaction hazard areas are found. This was used for the 2019 HCR update process.

This represents projected ground shaking in the City and County of San Francisco during a M7.8 earthquake on the San Andreas fault. The map updated in 2013 by USGS and ABAG. The specific scenario is: M7.8 San Andreas (All Northern Sections). This was used for the 2019 HCR update process.

For Visualization:
≤ 5.5 = Light
≤ 6.5 = Moderate
≤ 7.5 = Strong
≤ 8.5 = Very Strong
≤ 9.5 = Violent

This represents projected ground shaking in the City and County of San Francisco during a M7.8 earthquake on the San Andreas fault. The map updated in 2013 by USGS and ABAG. The specific scenario is: M7.8 Hayward (North/South Sections). This was used for the 2019 HCR update process.

For Visualization:
≤ 5.5 = Light
≤ 6.5 = Moderate
≤ 7.5 = Strong
≤ 8.5 = Very Strong
≤ 9.5 = Violent

This map shows the relative likelihood of deep landsliding based on regional estimates of rock strength and steepness of slopes. On the most basic level, weak rocks and steep slopes are more likely to generate landslides. This shows the distribution of one very important component of landslide hazard. It is intended to provide infrastructure owners, emergency planners and the public with a general overview of where landslides are more likely. The map does not include information on landslide triggering events, such as rainstorms or earthquake shaking, nor does it address susceptibility to shallow landslides such as debris flows. This map is not appropriate for evaluation of landslide potential at any specific site.

For visualization:
If gridcode is 8,9,10 than area is High Susceptibility for landslides

This dataset displays areas of the city vulnerable to damage from likely tsunami scenarios and displays what can be considered hazard zones of inundation. This data was created by SFDEM in 2015 based on data provided by the following agencies, and informs evacuation procedures: California Geological Survey and California Governor’s Office of Emergency Services. This was used for the 2019 HCR update process. However, this does not reflect the 2021 California Geological Survey, the California Governor's Office of Emergency Services, and AECOM update to the Tsunami Hazard zone. That can be found here: