Research Chemist
Email:
bbergama@usgs.gov
Office Phone:
916-278-3053
Fax:
916-278-3070
ORCID:
0000-0002-9610-5581
Location
Placer Hall
6000 J Street
Sacramento
, CA
95819-6129
US
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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 all field and laboratory-based data associated with...
Categories: Data;
Tags: Lower Sacramento,
San Francisco Bay,
San Joaquin Delta,
chemical analysis,
datasets, All tags...
dissolved metals,
environment,
field monitoring stations,
field sampling,
laboratory methods,
mercury,
mercury analysis,
nutrient content (water),
oxygen content (water),
real-time monitoring and reporting,
surface water quality,
suspended material (water),
water chemistry,
water column reflectivity,
water pH,
water properties,
water quality,
water sampling,
water sampling,
water temperature, 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 all data collected during the underway boat mapping component...
Categories: Data;
Tags: California,
Lower Sacramento,
Sacramento,
San Francisco Bay,
San Joaquin Delta, All tags...
Solano,
Yolo,
chemical analysis,
dissolved organic compounds,
environment,
environmental proxies,
field inventory and monitoring,
field sampling,
nutrient content (water),
optical methods,
oxygen content (water),
real-time monitoring and reporting,
salinity,
surface water quality,
suspended material (water),
transect sampling,
water chemistry,
water column reflectivity,
water pH,
water properties,
water sampling,
water sampling,
water temperature, 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 data herein report continuous field measurements and specific discrete sampling events associated with water quality and carbon consitutents – both dissolved and particulate forms. These data were coupled with atmospheric flux measurements during the 2017-18 water year to estimate the net storage of fixed carbon within the marsh on an areal basis. Direct and indirect measurement showed 47 to 59% of fixed carbon is stored on site, and most loss is through dissolved inorganic carbon (DIC) export. Comparing this with other tidal wetlands in the U.S. showed similar rates of loss, and a global meta-analysis showed that lateral loss is a proportionally larger term in coastal wetland carbon budgets, relative to other...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Ecology,
USGS Science Data Catalog (SDC),
Water Resources,
atmospheric properties,
carbon cycling, All tags...
environment,
wetlands, Fewer tags
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Data are from water samples collected from tributaries of the Great Lakes at three different drainage basin scales, including 1). watershed scale: 8 tributaries of the Great Lakes, 2). subwatershed scale: 5 locations from the greater Milwaukee, Wisconsin area, and 3). small scale: 213 storm sewers and open channel locations in three subwatersheds within the Great Lakes Basin including the Middle Branch of the Clinton River in Macomb County, Michigan (65 sample locations), Red Creek in Monroe County, New York (88 sample locations), and the Kinnickinnic River in Milwaukee County, Wisconsin (60 sample locations). At the watershed- and subwatershed-scale locations, water samples were collected over a 24-hour duration...
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