Hydrologist
California Water Science Center
Email:
edeparsia@usgs.gov
Office Phone:
916-278-3211
Location
California District Office - Placer Hall
Placer Hall
6000 J Street
Sacramento
, CA
95819-6129
US
Supervisor:
Michelle K Shouse
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This data release comprises a set of environmental sucralose occurrence data in the Sacramento area. Groundwater samples were collected throughout the Sacramento Valley as part of the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project study in the Sacramento area. These water samples were analyzed for sucralose by chemical derivatization followed by gas chromatography mass spectrometry. The calculated concentrations of sucralose detected in the water samples and the associated quality assurance data are tabulated in this data release. This data release supports the following publications: [Voss et al, in prep]
Categories: Data;
Tags: California,
Sacramento,
USGS Science Data Catalog (SDC),
United States,
Water Quality, All tags...
Water Resources,
biota,
chemical analysis,
gas chromatography,
mass spectroscopy,
water quality, Fewer tags
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The Sacramento / San Joaquin River Delta (SSJRD) is contaminated with legacy mercury (Hg) from historical mining and mineral processing activities throughout the watershed, as well as from contemporary atmospheric and industrial inputs. The current project was designed for the purpose of developing high-resolution spatial and temporal models for estimating concentrations of mercury species in surface waters of the SSJRD. The field component of the project brings together three high-resolution platforms for collecting water-quality data (fixed continuous monitoring stations (CMS) outfitted with in-situ sensors, spatial mapping using boat-mounted flow-through sensors, and satellite-based remote sensing) coupled with...
Categories: Data;
Tags: California,
Environmental Health,
Geochemistry,
Lower Sacramento,
Remote Sensing, All tags...
Sacramento,
San Francisco Bay,
San Joaquin Delta,
Solano,
USGS Science Data Catalog (SDC),
Water Quality,
Yolo,
chemical analysis,
environment,
environmental proxies,
field inventory and monitoring,
field monitoring stations,
field sampling,
mercury,
mercury analysis,
mercury contamination,
optical methods,
remote sensing,
suspended material (water),
transect sampling,
water chemistry,
water column reflectivity,
water properties,
water sampling,
water sampling, Fewer tags
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The goal of this study was to develop a suite of inter-related water quality monitoring approaches capable of modeling and estimating the spatial and temporal gradients of particulate and dissolved total mercury (THg) concentration, and particulate and dissolved methyl mercury (MeHg), concentration, in surface waters across the Sacramento / San Joaquin River Delta (SSJRD). This suite of monitoring approaches included: a) data collection at fixed continuous monitoring stations (CMS) outfitted with in-situ sensors, b) spatial mapping using boat-mounted flow-through sensors, and c) satellite-based remote sensing. The focus of this specific Child Page is to present laboratory measured spectral data associated with discrete...
Categories: Data;
Tags: California,
Lower Sacramento,
Sacramento,
San Francisco Bay,
San Joaquin Delta, All tags...
San Joaquin Delta,
Solano,
Yolo,
chemical analysis,
dissolved metals,
environment,
environmental proxies,
field monitoring stations,
field sampling,
optical methods,
suspended material (water),
water chemistry,
water column reflectivity,
water properties,
water sampling,
water sampling, Fewer tags
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This dataset includes field measurements and laboratory analyses of surface water, bottom water (sediment-water interface), surficial (0-2 cm) sediment, pore water (0-2 cm), and biota collected in Lake Combie, California, from September 2017 through August 2021. The study area includes six sites within the reservoir where discrete samples of surface water, bottom water, sediment, and pore water were taken along the length of the reservoir at the following distances from the spillway: 0.07 miles, 0.5 miles, 0.9 miles, 1.2 miles, 1.3 miles, and 1.4 miles. The within-reservoir sites were sampled during September 2017, February 2018, and May 2018, prior to a large sediment removal operation, and again during September...
Categories: Data;
Tags: California,
Geochemistry,
Hydrology,
Lake Combie,
Limnology, All tags...
USGS Science Data Catalog (SDC),
Upper Bear,
Water Quality,
Zooplankton,
bioaccumulation,
biota,
chemical analysis,
dissolved metals,
environment,
field sampling,
fish,
geoscientificInformation,
inlandWaters,
mercury,
mercury analysis,
mercury contamination,
methyl mercury,
methylmercury,
optical methods,
reservoir,
sediment analysis,
suspended material (water),
water chemistry,
water properties,
water quality, Fewer tags
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