|
This dataset includes the field measurements and laboratory analyses of surface water, seston, and sediment collected from Lake Powell, within Glen Canyon National Recreation area (GLCA), during high flow (May-June 2014) and low flow (August 2015) conditions. The study area includes 12-13 sampling sites that follow a transect spanning the entire length of the reservoir from the Colorado River inflow to the Glen Canyon dam, as well as the San Juan River arm, the Escalante River arm and West Canyon. Bed sediment samples were analyzed for mercury speciation, methylmercury production and degradation rates, total reduced sulfur, iron speciation, organic content, and 16S rRNA gene templates as a proxy for microbial abundances....
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Environmental Health,
Geochemistry,
Lake Powell, Glen Canyon National Recreation Area, Utah and Arizona,
USGS Science Data Catalog (SDC),
Water Resources, All tags...
aquatic ecosystems,
bioaccumulation,
biogeochemistry,
limnology,
mercury,
reservoir, Fewer tags
|
These data comprise the target and non-target VOC measurements collected from 1999 to 2016 from the shallow and deep unsaturated zone at the Amargosa Desert Research Site adjacent to a low-level radioactive waste and hazardous chemical waste facility near Beatty, Nevada. All data are compiled in electronic text files that are included with this release.
Categories: Data;
Tags: Amargosa Desert,
Environmental Health,
Hydrology,
Mojave Desert,
Nevada, All tags...
Nye County,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
contaminant transport,
unsaturated zone,
volatile organic compounds, Fewer tags
|
The Permian Basin, straddling New Mexico and Texas, is one of the most productive oil and gas (OG) provinces in the United States. OG production yields large volumes of wastewater that contain elevated concentrations of major ions including salts (also referred to as brines), and trace organic and inorganic constituents. These OG wastewaters pose unknown environmental health risks, particularly in the case of accidental or intentional releases. Releases of OG wastewaters have resulted in water-quality and environmental health effects at sites in West Virginia (Akob, et al., 2016, Orem et al. 2017, Kassotis et al. 2016) and in the Williston Basin region in Montana and North Dakota (Cozzarelli et al. 2017, Cozzarelli...
Categories: Data;
Tags: Chihuahuan Desert,
DNA sequencing,
Eddy,
Energy Resources,
Geochemistry, All tags...
New Mexico,
USGS Science Data Catalog (SDC),
chemical analysis,
desert ecosystems,
ecotoxicology,
environment,
geochemistry,
geochemistry,
habitat alteration and disturbance,
industrial pollution,
isotope geochemistry,
isotopic analysis,
mass spectroscopy,
microbes,
microbiology,
petroleum,
produced water,
soil chemistry,
soil resources,
toxic trace element contamination,
vegetation, Fewer tags
|
|