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This data set includes field data for fishes sampled using gill nets and otter trawls during daylight hours in and around Ryer Island, Suisun Bay, California. This data release includes all measured environmental parameters and fish taxa included in the analysis. First posted: April 17, 2019 Revised: August 27, 2019
Categories: Data,
Data Release - Revised;
Tags: Aquatic Biology,
Aquatic Biology,
California,
Ecology,
Fish Ecology,
This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in Suisun Marsh and Suisun Bay in the San Francisco Estuary of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, chlorophyll, blue-green algal pigments, and phytoplankton community structure. Data-collection cruises were conducted under three different environmental/flow conditions between July - September 2018 that coincided with conditions prior to, during, and following the Suisun Marsh Salinity Control Gates Summer Action. The action is part of the Delta Smelt Resiliency...
Categories: Data;
Tags: California,
Central Valley,
Geochemistry,
Sacramento River,
Sacramento-San Joaquin Delta,
This is the data release for gillnet data from a 2016-18 USGS Tidal Wetlands Study and a 2010-11 Sacramento Splittail Study targeting fish in the upper San Francisco Estuary and Sacramento-San Joaquin Delta. This data was used to analyze selectivity parameters of five gillnet mesh sizes (38.1, 50.8, 63.5, 76.2, 88.9 mm) on 15 fish species of the upper San Francisco Estuary and Sacramento-San Joaquin Delta (Striped Bass (Morone saxatilis), Sacramento Splittail (Pogonichthys macrolepidotus), White Catfish (Ameiurus catus), Redear Sunfish (Lepomis microlophus), Sacramento Pikeminnow (Ptychocheilus grandis), Tule Perch (Hysterocarpus traskii), Jacksmelt (Atherinopsis californiensis), Sacramento Sucker (Catostomus occidentalis),...
Categories: Data;
Tags: Aquatic Biology,
Sacramento-San Joaquin Delta,
San Francisco Estuary,
USGS Science Data Catalog (SDC),
Wildlife Biology,
Reconstructing sediment age profiles from historical bathymetry changes in San Pablo Bay, California
Sediment age profiles reconstructed from a sequence of historical bathymetry changes are used to investigate the subsurface distribution of historical sediments in a subembayment of the San Francisco Estuary. Profiles are created in a grid-based GIS modeling program that stratifies historical deposition into temporal horizons. The model's reconstructions are supported by comparisons to profiles of 137Cs and excess 210Pb at 12 core sites. The predicted depth of the 1951 sediment horizon is positively correlated to the depth of the first occurrence of 137Cs at sites that have been depositional between recent surveys. Reconstructions at sites that have been erosional since the 1951 survey are supported by a lack of...
Categories: Publication;
Types: Citation;
Tags: GIS,
San Francisco Estuary,
historical bathymetry,
se
This model archive summary details the suspended-sediment concentration (SSC) model developed to compute 15-minute SSC values from 15-minute turbidity data for the period October 01, 2017 through September 30, 2020. The methods used follow U.S. Geological Survey (USGS) guidance as referenced in Office of Water Quality Technical Memorandum 2016.10 (USGS 2016) and USGS Techniques and Methods, book 3, chapter C4 (Rasmussen and others 2009). A WY is defined as the period from October 1 of one year through September 30 of the following year and is categorized by the year in which it ends.
Understanding the effects of climate change is a substantial challenge in estuarine systems because the mixing of freshwater and ocean water adds complexity to climate change projections. Such climate change projections have been conducted in the San Francisco Estuary as part of the U.S. Geological Survey’s CASCaDE Project. In this project, we assessed downscaled air temperature data from 10 Global Climate Change models under 2 Representative Concentration Pathway (RCP) trajectories for greenhouse gas concentrations for three regions of the upper San Francisco Estuary: Suisun and Grizzly Bays, Suisun Marsh, and the legal Delta. We also utilized previously derived regression models to estimate future water temperatures...
Categories: Data;
Tags: CASCADE Project,
Climatology,
Grizzly Bay,
Sacramento-San Joaquin Delta,
San Francisco Estuary,
This dataset includes field data for fishes sampled using set lines deployed quarterly during 2017 and 2018 at Ryer Island, Suisun Bay, California, USA. This data release includes all measured environmental parameters and fish taxa included in the analysis.
Categories: Data;
Tags: Acipenser transmontanus,
Aquatic Biology,
Ecology,
Ryer Island,
Sacramento-San Joaquin Delta,
This model archive summary details the suspended-sediment concentration (SSC) model developed to compute 15-minute SSC values from 15-minute turbidity data for the period October 01, 2017 through September 30, 2020. The methods used follow U.S. Geological Survey (USGS) guidance as referenced in Office of Water Quality Technical Memorandum 2016.10 (USGS 2016) and USGS Techniques and Methods, book 3, chapter C4 (Rasmussen and others 2009). A WY is defined as the period from October 1 of one year through September 30 of the following year and is categorized by the year in which it ends.
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