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Filters Date Range Past year (4) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Citation (4) Downloadable (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) Shapefile (1) Contacts PCMSC Science Data Coordinator U.S. Geological Survey - ScienceBase Pacific Coastal and Marine Science Center Theresa Fregoso Amy Foxgrover More... Categories Data (10) Tag Types Theme (10) Place (10) USGS Scientific Topic Keyword (5) Tag Schemes USGS Thesaurus (9) Geographic Names Information System (GNIS) (9) Marine Realms Information Bank (MRIB) keywords (5) ISO 19115 Topic Category (10) Data Categories for Marine Planning (9) Global Change Master Directory (GCMD) (4) Marine Realms Information Bank (MRIB) Keywords (4) More... View Results as: JSON ATOM CSV

Bathymetric DEM of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 This part of the data release presents a digital elevation model (DEM) created from bathymetry data collected on February 1, 2011, in the Sacramento River from the confluence of the Feather River to Knights Landing. The data were collected by the USGS Pacific Coastal and Marine Science Center (PCMSC) team with collaboration and funding from the U.S. Army Corps of Engineers. This project used interferometric sidescan sonar to characterize the riverbed and channel banks along a 12 mile reach of the Sacramento River, California (River Mile 79 through River Mile 91) to aid in the understanding of fish response to the creation of safe habitat associated with levee restoration efforts in two 1.5 mile reaches of the Sacramento... Categories: Data; Types: Citation; Tags: Bathymetry and Elevation, Echo Sounders, Feather River, GPS (Global Positioning System), Geophysics, All tags... Knights Landing, Sacramento River, Water Depth, Woodland, bathymetry, digital elevation models, elevation, interferometric sonar, levee, multibeam echo sounder, real-time monitoring and reporting, river, sea-floor acoustic reflectivity, sea-floor characteristics, sidescan sonar, Fewer tags Bathymetric change analysis in San Francisco Bay, California, from 1971 to 2020 This data release provides bathymetric change grids of four geographic areas of San Francisco Bay, California, comparing digital elevation models (DEMs) created from bathymetric data collected in the 1970s and 1980s with DEMs created from bathymetric data collected in the 2010s and 2020. These types of change analyses can provide information on the quantities and patterns of erosion and deposition in San Francisco Bay over the 9 to 47 years between surveys, and they reveals that the bay floor lost about 34 million cubic meters of sediment between the intervening time period. Results from this study can be used to assess how San Francisco Bay has responded to changes in the system such as sea-level rise and variation... Categories: Data; Tags: Geomorphology, Hydrology, Marine Geology, Sedimentology, Water Quality Bathymetric change of South San Francisco Bay, California: 1979 to 2020 This 50-m-resolution surface presents bathymetric change of South San Francisco Bay, California (hereafter referred to as South Bay). This surface compares a 1-m-resolution digital elevation model (DEM) of the southern portion of San Francisco Bay (Fregoso and others, 2021), comprised of bathymetry data in the South Bay region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 50-m-resolution DEM of South Bay comprised of historic surveys from 1979 to 1985 (referred to as the 1980s because the majority of the surveys were in that decade). The creation of this change surface involved the resampling of the 1-m-resolution 2010s DEM to match the 50-m-resolution... Categories: Data; Tags: Bathymetry and Elevation, GPS measurement, Global Positioning System (GPS) observations, San Francisco Bay, South Bay, All tags... bathymetry, coastal processes, digital elevation models, elevation, geographic information systems, geographic information systems (GIS), geospatial datasets, inlandWaters, multibeam echo sounder, multibeam sonar, single-beam echo sounder, single-beam echo sounder, topographic mapping, topography, Fewer tags Sediment grain-size distributions of three carbonate sand layers in Anahola Valley, Kaua'i, Hawai'i (ver. 2.0, July 2023) This portion of the data release presents sediment grain-size data from samples collected from Anahola Valley, Kaua`i, Hawai`i in November, 2015 (USGS Field Activity 2015-671-FA). 63 sand and mud samples were taken from sediment cores that were collected using a Russian corer (a hand-held, side-filling peat auger) from two site locations. Site locations were determined using a hand-held global navigation satellite system, GNSS. The grain-size distributions of samples were determined using standard techniques developed by the USGS Pacific Coastal and Marine Science Center sediment lab. The grain-size data are provided in a comma-delimited spreadsheet (.csv). Core ANA15-RC1 BR contained two carbonate sand layers (Sand... Categories: Data; Tags: Anahola Valley, CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Kaua'i, All tags... Nonliving resources, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, USGS:5b6b7580e4b006a11f794fcb, geoscientificInformation, grain-size analysis, sediment, sediment transport, tsunamis, tsunamis, Fewer tags Standard deviation of the bathymetric DEM of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 This part of the data release contains a grid of standard deviations of bathymetric soundings within each 0.5 m x 0.5 m grid cell. The bathymetry was collected on February 1, 2011, in the Sacramento River from the confluence of the Feather River to Knights Landing. The standard deviations represent one component of bathymetric uncertainty in the final digital elevation model (DEM), which is also available in this data release. The bathymetry data were collected by the USGS Pacific Coastal and Marine Science Center (PCMSC) team with collaboration and funding from the U.S. Army Corps of Engineers. This project used interferometric sidescan sonar to characterize the riverbed and channel banks along a 12 mile reach... Tags: Bathymetry and Elevation, Echo Sounders, Feather River, GPS (Global Positioning System), Knights Landing, All tags... Sacramento River, Water Depth, Woodland, bathymetry, digital elevation models, elevation, interferometric sonar, levee, multibeam echo sounder, real-time monitoring and reporting, river, sea-floor acoustic reflectivity, sea-floor characteristics, sidescan sonar, Fewer tags Bathymetric change of San Pablo Bay, California: 1983 to 2015 This 25-m-resolution surface presents bathymetric change of San Pablo Bay, California, from 1983 to 2015. This surface compares a 1-m-resolution digital elevation model (DEM) of the northern portion of San Francisco Bay (Fregoso and others, 2020), comprised of bathymetry data in the San Pablo Bay region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 25-m-resolution bathymetric DEM of San Pablo Bay comprised of historic surveys from 1983 to 1986 (referred to as the 1980s because the majority of the surveys were in that decade). The creation of this change surface involved the resampling of the 1-m-resolution 2010s DEM to match the 25-m-resolution of the... Categories: Data; Tags: Bathymetry and Elevation, GPS measurement, Global Positioning System (GPS) observations, San Francisco Bay, San Pablo Bay, All tags... bathymetry, coastal processes, digital elevation models, elevation, geographic information systems, geographic information systems (GIS), geospatial datasets, inlandWaters, multibeam echo sounder, multibeam sonar, single-beam echo sounder, single-beam echo sounder, topographic mapping, topography, Fewer tags Bathymetric change of Suisun Bay, California: 1988 to 2016 This 25-m-resolution surface presents bathymetric change of Suisun Bay, California, from 1988 to 2016. This surface compares a 1-m-resolution digital elevation model (DEM) of the northern portion of San Francisco Bay (Fregoso and others, 2020), comprised of bathymetry data in the Suisun region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 25-m-resolution bathymetric DEM of Suisun Bay comprised of historic surveys from 1988 to 1990 (referred to as the 1990s because the majority of the surveys were in that decade). The creation of this change surface involved the resampling of the 1-m-resolution 2010s DEM to match the older 25-m-resolution of the 1990s... Categories: Data; Tags: Bathymetry and Elevation, GPS measurement, Global Positioning System (GPS) observations, San Francisco Bay, Suisun Bay, All tags... bathymetry, coastal processes, digital elevation models, elevation, geographic information systems, geographic information systems (GIS), geospatial datasets, inlandWaters, multibeam echo sounder, multibeam sonar, single-beam echo sounder, single-beam echo sounder, topographic mapping, topography, Fewer tags Acoustic Backscatter of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 This part of the data release presents acoustic backscatter data collected on February 1, 2011, in the Sacramento River from the confluence of the Feather River to Knights Landing. The data were collected by the USGS Pacific Coastal and Marine Science Center (PCMSC) team with collaboration and funding from the U.S. Army Corp of Engineers. This project used interferometric sidescan sonar to characterize the riverbed and channel banks along a 12 mile reach of the Sacramento River, California (River Mile 79 through River Mile 91) to aid in the understanding of fish response to the creation of safe habitat associated with levee restoration efforts in two 1.5 mile reaches of the Sacramento River between River Mile 80... Categories: Data; Types: Citation; Tags: Bathymetry and Elevation, Echo Sounders, Feather River, GPS (Global Positioning System), Geophysics, All tags... Knights Landing, Sacramento River, Water Depth, Woodland, bathymetry, digital elevation models, elevation, interferometric sonar, levee, multibeam echo sounder, real-time monitoring and reporting, river, sea-floor acoustic reflectivity, sea-floor characteristics, sidescan sonar, Fewer tags Bathymetric change of Central San Francisco Bay, California: 1971 to 2020 This 25-m-resolution surface presents bathymetric change of Central San Francisco Bay, California (hereafter referred to as Central Bay). This surface compares a 1-m-resolution digital elevation model (DEM) of the central portion of San Francisco Bay (Fregoso and others, 2021), comprised of bathymetry data in the Central Bay region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 25-m-resolution DEM of Central Bay comprised of historic surveys from 1971 to 1984 (referred to as the 1980s because the majority of the surveys were in that decade). The creation of this change surface involved the resampling of the 1-m-resolution 2010s DEM to match the 25-m-resolution... Categories: Data; Tags: Bathymetry and Elevation, Central Bay, GPS measurement, Global Positioning System (GPS) observations, San Francisco Bay, All tags... bathymetry, coastal processes, digital elevation models, elevation, geographic information systems, geographic information systems (GIS), geospatial datasets, inlandWaters, multibeam echo sounder, multibeam sonar, single-beam echo sounder, single-beam echo sounder, topographic mapping, topography, Fewer tags Gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California This data release contains information on gravity cores that were collected by the U.S. Geological Survey in the area of San Pablo Bay and Carquinez Strait, California in 1990, 1991, and 2000. Ten (10) pdf files describe gravity cores that were split, photographed, and imaged by X-rays, and another pdf file contains a core-log legend. In addition, a shapefile provides sample collection data. Seventy-two gravity cores were collected by the U.S. Geological Survey in 1990, 1991, and 2000 from San Pablo Bay and Carquinez Strait, California. Gravity cores from San Pablo Bay contain bioturbated laminated silts and sandy clays, whole and broken bivalve shells (mostly mussels), fossil tube structures, and fine plant or... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Carquinez Strait, Marine Geology, Oceans > marine sediments > sedimentation, San Francisco Bay, All tags... San Pablo Bay, USA, environment, geoscientificInformation, gravity coring, oceans, stratigraphy, Fewer tags Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February, 2011 Abstract On February 1, 2011, the USGS Pacific Coastal and Marine Science Center (PCMSC) team carried out a project using interferometric sidescan sonar to characterize the riverbed and channel banks of a 12 mile reach of the Sacramento River near the town of Knights Landing, California (River Mile 79 through River Mile 91). The project was developed in coordination with David Smith, Engineering Research and Development Center (ERDC) of the US Army Corps of Engineers, and Brian Mulvey, Sacramento District Environmental Planning Section of the US Army Corps of Engineers as part of an effort to aid in understanding fish response to the creation of safe habitat associated with levee restoration efforts in two 1.5 mile... Categories: Data; Types: Citation; Tags: Bathymetry and Elevation, Echo Sounders, Feather River, GPS (Global Positioning System), Geophysics, All tags... Knights Landing, Sacramento River, Water Depth, Woodland, acoustic methods, bathymetry, digital elevation models, elevation, interferometric sonar, levee, multibeam echo sounder, real-time data, river, rivers, sea-floor acoustic reflectivity, sea-floor characteristics, sidescan sonar, Fewer tags