San Francisco Seismic Hazard Zones (from DataSF, pulled monthly)

This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process. Data pushed to ArcGIS Online on July 1, 2026 at 4:00 AM by SFGIS. Data from: https://data.sfgov.org/d/re79-p8j5 Description of dataset columns: the_geom ID Note: If no description was provided by DataSF, the cell is left blank. See the source data for more information.本数据集为数字地震灾害带地图，旨在展示强震发生时可能发生砂土液化（liquefaction）与地震诱发滑坡（earthquake-induced landslides）的区域。本地图共展示三类被归类为地震灾害带的地质灾害：1）砂土液化，2）地震诱发滑坡，3）砂土液化与地震诱发滑坡的重叠区域。位于上述三类灾害带范围内的地产开发商，在当地行政审批流程中，可能被要求开展潜在灾害排查，并采取相应措施降低灾害威胁。本数据由SFGIS于2026年7月1日凌晨4:00推送至ArcGIS Online。数据来源：https://data.sfgov.org/d/re79-p8j5。数据集字段说明：the_geom ID 注：若DataSF未提供对应字段描述，则该单元格留空。更多信息请参阅源数据。