Evan T Dailey

Vegetation biomass and density from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018

Vegetation type and density data were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018. Vegetation samples were collected by divers, and used to determine dry biomass density. These data were collected as part of a cooperative project, with the USGS California Water Science Center and the California Department of Fish and Wildlife, on the effects of invasive aquatic vegetation on sediment transport in the Sacramento-San Joaquin Delta.

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, Lindsey Slough, Marsh, All tags... Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sedimentation, State of California, Substrate, U.S. Geological Survey, USGS, aquatic ecosystems, botany, inland waters, invasive species, plant testing, plot sampling, specimen collecting, Fewer tags

Sediment size distributions from San Pablo Bay and China Camp Marsh, California

As part of the hydrodynamic and sediment transport investigations in San Pablo Bay and China Camp Marsh, California, particle size distributions of bed sediments were measured at most instrumented stations and are presented in a comma-delimited values spreadsheet. This portion of the data release presents San Pablo Bay and China Camp Marsh sediment particle size distributions from samples collected during multiple instrument deployments. Users are advised to check the data carefully for sampling time, location, and reference information.

Categories: Data; Tags: China Camp, Marin County, Oceans, San Francisco Bay, San Pablo Bay, All tags... Sediment, Sedimentation, Substrate, USGS:59c45772e4b017cf313bea5f, grain-size analysis, ocean processes, particle-size analysis, sediment transport, sediments, Fewer tags

Suspended particle size distribution data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018

These data present suspended particle size distributions collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough on April 4 and April 18, 2017, and near the mouth of the Mokelumne River and in Middle River on March 14, 2018 by deploying a Sequoia Scientific Laser In-situ Scattering and Transmissometry instrument (LISST 100x) from a small vessel during the deployment of the hydrographic time series data instruments. At each site, data were collected 1 to 2 times, generally near the water surface, at mid depth, and near the sediment bed. These data were collected as part of a study on the...

Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, Lindsey Slough, Middle River, All tags... Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment transport, Shallow-water habitat, State of California, Suspended-sediment concentration, Tidal shallows, U.S. Geological Survey, USGS, aquatic ecosystems, field observation, geoscientificInformation, marine water quality, physical oceanography, seabed, suspended material (water), water level measurements, wave observations, Fewer tags

We measured currents, suspended-sediment concentration (SSC), bed sediment characteristics, and vegetation biomass density in the Sacramento-San Joaquin Delta in 2017-2018, as part of a project investigating the influence of invasive aquatic vegetation (IAV) on flow and sediment flux. This data release includes data from three sites: Lindsey Slough (April 2017), Middle River (March 2018) and the lower Mokelumne River (March 2018). At all three sites the IAV is dominated by the submerged species Egeria densa. Station locations, instrumentation, and measured variables are detailed on pages for each data type. IAV a poses a growing hazard to navigation, infrastructure, and ecosystems in the Sacramento-San Joaquin...

Acoustic backscatter data collected in 2007 from the San Miguel Passage in the Channel Islands, California

This portion of the data release presents acoustic backscatter data from the San Miguel Passage, in the Channel Islands, California. The data were collected in August 2007 by the U.S. Geological Survey, Pacific Coastal and Marine Science Center (USGS, PCMSC) using a 234.5 kHz SEA (AP) Ltd. SWATHplus-M phase-differencing sidescan sonar mounted on the NOAA, Channel Islands National Marine Sanctuary R/V Shearwater as part of the research cruise S-2-07-SC. Data were collected in water depths up to 89 meters. The San Miguel Passage is within the Channel Islands National Marine Sanctuary and is the body of water between the two western-most islands of the chain - Santa Rosa and San Miguel Islands. The data were processed...

Tags: Bathymetry and Elevation, CMGP, Channel Islands, Channel Islands National Park, Coastal and Marine Geology Program, All tags... PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, U.S. Geological Survey, USGS, elevation, geospatial datasets, interferometric sonar, marine geophysics, multibeam echo sounder, oceans, sea-floor acoustic reflectivity, sea-floor characteristics, seabed, Fewer tags