Apr 19, 2006 · With heightened public awareness about earthquake hazards leading up to the 100th anniversary of the 1906 San Francisco earthquake, the U.S. Geological Survey (USGS) is releasing new maps of the San Francisco Bay Area designed to give residents and others a new look at the geologic history and hazards of the region.

Aug 3, 2020 · The Water Quality of San Francisco Bay Research and Monitoring Project measures changes in water quality along the deep channel of the San Francisco Bay-Delta system using submersible sensors and discrete water samples. Learn more about how we collect and measure water-quality data.

Jan 22, 2025 · Monitoring location 374938122251801 is associated with an Estuary in San Francisco County, California. Current conditions of Chlorophyll fluorescence (fChl), Dissolved oxygen, Specific conductance, and more are available. Water …

Jul 8, 2021 · A 1-m resolution bathymetric digital elevation model (DEM) of all off San Francisco Bay was constructed from bathymetric surveys collected from 1999 to 2016. The DEM has been divided into northern and southern sections due to file size, and is available in both MLLW and NAVD88 versions.

Aug 8, 2017 · The U.S. Geological Survey (USGS) maintains a place-based research program in San Francisco Bay (USA) that began in 1969 and continues, providing one of the longest records of...

The rocks and fossils of the San Francisco Bay region reveal that the geology there is the product of millions of years at the active western margin of North America. The result of this history is a complex mosaic of geologic materials and structures that form the landscape.

Detailed information about the measurements, historical methodology, and technical validations can be found in Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015. Database data in spreadsheet form are accessible in these publications for 1969-2015 and 2016-2021.

The U.S. Geological Survey (USGS) has continuously monitored real-time water quality and suspended-sediment transport in San Francisco Bay (the Bay) since 1989 as part of a multi-agency effort (see “Acknowledgments” section) to address estuary management, water supply, and ecological concerns.

Jan 10, 2025 · An earthquake with a preliminary magnitude of 3.7 shook San Francisco on Friday morning, the U.S. Geological Survey said.The quake struck about three miles northwest of the San Francisco...

With heightened public awareness about earthquake hazards leading up to the 100th anniversary of the 1906 San Francisco earthquake, the U.S. Geological Survey (USGS) is releasing new maps of the San Francisco Bay Area designed to give residents and others a new look at the geologic history and hazards of the region.